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Riley, Adam C. „Promoting the production of non-timber forest products“. Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5461.
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Thesis (M.S.)--West Virginia University, 2007.Title from document title page. Document formatted into pages; contains viii, 115 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 84-91).
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Van, Gevelt Terry Antonius. „Non-timber forest product commercialisation in South Korea“. Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648780.
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Trozzo, Katie E. „Non-timber forest product livelihood opportunities in Appalachia“. Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/103572.
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Non-timber forest products (NTFPs) have been harvested in the wild for generations in Appalachia. Demand for forest farmed raw material and transparent supply chains is growing, which has increased attention on the role of NTFPs in regional livelihoods. We conducted an embedded case study to understand contemporary NTFP harvest, perceptions of community-based development of NTFP livelihood opportunities, and the extent to which forest landowners are interested forest farming. One case study focused on Grayson County, Virginia and included semi-structured interviews with 16 key stakeholders. Interviews explored motivations, species preferences, and uses of NTFPs among individuals and then perceived assets, obstacles, and desired strategies for NTFP livelihood development within the community. Through qualitative analysis we found financial benefits, engagement with nature, and personal preferences (personal fulfillment, learning and creativity, and lifestyle) were key motivators. Newcomers to Appalachia were more likely to balance monetary, environmental, and lifestyle motivations, and multigenerational residents focused more on financial motivations and to a lesser degree lifestyle. We used the community capitals framework to analyze the community focused data and found references to natural, human, and cultural capital as both an asset and an obstacle. Financial capital was a top-obstacle whereas social capital was a top asset. Strategies focused on social, human, and financial capital investments such as social networking, educational programming, tax incentive programs, and local fundraising. The regional case study surveyed via mail those who own 5 or more acres of forestland in 14 Southwest Virginia Appalachian counties to understand extent to which they are interested in forest farming or leasing land for forest farming. We had a response rate of 28.9% and found 45% of forest landowners, owning 47% of the forestland, were interested in forest farming. Those that were likely to lease their land accounted for 36% of all respondents and owned 43% of the forestland. Further, those who were interested did not differ based on demographic and land characteristics.
Our study reveals the contemporary state of NTFP livelihoods combines markets sales with broader homesteading objectives and that lifestyle and environmental motivators are an increasing focus as newcomers take roots in the region. Further, communities may be able to draw upon the cultural and natural capital around NTFPs as well as the strong social capital often present in rural communities to further invest in social networking, education, financial incentives, and funding to support NTFP livelihood development. Finally, forest farming and leasing of land for this practice is of considerable and broad appeal to forestland owners in Southwest Virginia, which may indicate possibilities for a critical mass to supply a growing demand for sustainably sourced and quality NTFP raw materials.Doctor of Philosophy
In recent decades Appalachia has experienced socioeconomic challenges with lack of employment opportunities, high poverty levels and the resulting outmigration of residents, especially youth, in search of work. At the same time newcomers are migrating into the area drawn by the culture and natural environment, which is shifting the social fabric of the region. It is in this new context that communities are asked to develop livelihood opportunities using what is available to them. Non-timber forest products (NTFPs) have been harvested in the wild for generations in Appalachia and offer one avenue of possibility, especially as the market has begun to support higher prices for raw materials that meet the increasing consumer demand for sustainability and quality. Within these new dynamics we set out to understand contemporary uses of NTFPs in Appalachia, and what motivates people to work with these species, as well as community perceptions about how to develop NTFP livelihood opportunities, and the extent to which Appalachian residents are interested in forest farming (the cultivation or stewardship of NTFPs in an existing forest). Our study reveals the contemporary state of NTFP livelihoods combines markets sales with broader homesteading objectives and that lifestyle and environmental motivators are an increasing focus as newcomers take roots in the region. Further, communities may be able to draw upon the cultural and natural capital around NTFPs as well as the strong social and human capital often present in rural communities to further invest in social networking, education, financial incentives, and funding to support NTFP livelihood development. Finally, forest farming and leasing of land for this practice is of considerable and broad appeal to forestland owners in Southwest Virginia, which may indicate possibilities for a critical mass to supply a growing demand for sustainably sourced and quality NTFP raw materials.
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Valkenburg, J. L. C. H. van. „Non-timber forest products of East Kalimantan potentials for sustainable forest use /“. Wageningen, The Netherlands : Tropenbos Foundation, 1997. http://catalog.hathitrust.org/api/volumes/oclc/36674371.html.
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Chamberlain, James Luther. „The Management of National Forests of Eastern United States for Non-Timber Forest Products“. Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/30053.
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Many products are harvested from the forests of the United States in addition to timber. These non-timber forest products (NTFPs) are plants, parts of plants, or fungi that are harvested from within and on the edges of natural, disturbed or managed forests. Often, NTFPs are harvested from public forests for the socio-economic benefit they provide to rural collectors.
Social science and market research methods were used to examine the extent that NTFPs are addressed in national forest management plans, identify and explore issues that affect their management, and determine the attitudes and perceptions of forest managers at various levels within the U.S. Forest Service.
Non-timber forest products have not been considered in national forest management plans to the extent that have other forest resources. Fewer that 25 percent of the current management plans for the national forests of eastern United States address NTFPs. However, the Forest Service Directive System provides sufficient policy and procedural direction at the national and regional level for the management for NTFPs and legislation enacted in 2000 directs the Forest Service to develop a pilot program to beginning managing for these products.
Managers with expertise and education in botany, wildlife, recreation, and wilderness had significantly more positive attitude toward managing for NTFPs than did managers with a more traditional (timber-based) educational background. A regression model of intention to include NTFPs in the forest management plans was developed using data from forest managers and based on the Theory of Reasoned Action. Both attitude and perception were found to be significant determinants of behavior intention.
A common perception among forest managers is that NTFP management is not an issue of public concern. Also, managers do not perceive that the lack of management is a problem. Without a visible and vocal constituency, the impetus for change must necessarily come from within the organization. Efforts by the U.S. Forest Service to manage for NTFPs will be hampered by a lack of information and expertise. But, the activities of more progressive national forests suggest that sufficient knowledge does exist for the agency to take a more proactive approach to management.Ph. D.
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Grose, Allison Jennifer Carleton University Dissertation Geography. „Non-timber dimensions of forest management; a qualitative evaluation of Ontario's forest policy“. Ottawa, 1995.
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Ghosal, Somnath. „Non-timber forest products in West Bengal : knowledge, livelihoods and policy“. Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/11429/.
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The theme of this research is the conservation of open dry-deciduous forest areas of West Bengal, India, through the socio-economic progress of forest dwellers. The use of Non-Timber Forest Products (NTFPs) is manifold in the livelihood of this area. Systematic and sustainable harvesting of NTFPs could improve the standard of living of forest dwellers and play an important role in the conservation of forest ecosystems. The research was conducted in Purulia, Bankura and West Midnapur districts, in the south-western part of West Bengal, India. Firewood is the main source of fuel for the forest fringe dwellers of these three districts. Due to the high demand firewood harvesting is an important occupation for a large number of forest communities. The incessant collection of firewood is adversely affecting forest cover and the type and quality of plant species. In this circumstance, sustainable and systematic harvesting of NTFPs can play a potential role in creating job opportunities for forest dwellers. The enhancement of organised NTFP marketing channels could improve the economy and thus reduce the major dependence on firewood. Therefore, the aim of the thesis is to examine NTFPs-based economic development of forest fringe dwellers and to protect the forest cover. The thesis starts with a brief introduction to NTFPs and its present importance in forest livelihoods in India (with reference to West Bengal) and in international context, highlighting work by geographers, forest researchers, economists and sociologists who are becoming more interested on NTFPs and forest livelihoods from their respective disciplinary perspectives. To have an idea about NTFPs based forest livelihood of West Bengal, it is necessary to study the geo-physical features of the State and the study area. This will reveal the reasons why this area has been selected for this research. A variety of complementary sources and methodologies were used for the collection and analysis of data and information. Detailed archival research at the British Library, London provides insight into the pre-colonial and colonial NTFP-based forest livelihoods of the Presidency of Bengal. An exploration of the socio-cultural characteristics of forest communities through interviews and surveys helped to reveal the use and importance of NTFPs. After collection of NTFPs, it is necessary to store those products for gradation and value-addition. The research reveals that the organised markets are quite away from forest villages. Therefore, the knowledge of systematic and sustainable collection and storage of NTFPs needs to be enhanced at the grassroots level. After the collection and processing of NTFPs, the most important thing is marketing. Through the organised marketing system, forest dwellers can earn more money selling the same amount of products. It was discovered that a large number of intermediaries are involved in the NTFPs business and these intermediaries often try to purchase NTFPs from actual collectors at a very low price and then sell them at a high price. The reasons for the presence of middlemen and how the formal marketing channels can be stronger than the present informal channels were all revealed to be important issues which bolster the formal marketing channels, in which actual collectors might earn reasonable price for their collected NTFPs. It is argued that the efficient and sustainable harvesting of NTFPs can promote opportunities for marginal forest dwellers of these three districts. The increasing production of value-added products from different NTFPs can improve the economic status of these forest dwellers and will reduce rampant demolition of forest resources. The socio-economic improvement can also shift forest dwellers to other professions, which will reduce the dependency on forestry and subsequently it will help to promote the dry-deciduous forest ecology. Therefore, the research begins with an investigation of historical perspective of human-forest interactions in the Presidency of Bengal and subsequently explores the contemporary forest-based livelihoods of the socio-economically deprived forest fringe dwellers in the dry-deciduous forest areas of West Bengal. The research draws on interdisciplinary areas including historical geography with reference of indigenous knowledge regarding forest products, development geography of the forest-based livelihoods and economic geography of the systematic and sustainable harvesting of NTFPs for the enhancement of formal marketing channels. The study demonstrates that there is a need for intensive research at the grassroots level that will address all the aspects of NTFPs and forest livelihoods, before devising any precise NTFP policy to improve the status of forest livelihoods through the sustainable harvesting of forest products.
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Dyke, Alison Jane. „The practice, politics and ecology of non timber forest products in Scotland“. Thesis, University of Glasgow, 2006. http://theses.gla.ac.uk/5632/.
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Non timber forest products are the neglected resource of Scotland’s woodlands, used by many, but with little provision in law, policy or management. Drawing on new research conducted in Scotland, and comparative studies in Finland, the Pacific Northwest USA and Canada, this thesis examines issues relating to the practice, politics and ecology of NTFPs. The methodological approaches used in the field research are set out in Chapter One. Chapters Two to Five explore the perspectives of stakeholder groups, who either use NTFPs directly or who influence the availability of resources and the ability of others to access them. The first of these groups is harvesters, with Chapter Two examining how issues of legal pluralism or the coexistence of both legal and customary rights for harvesting has resulted in the dominance of common practice over management and policy. Chapter Three discusses buying and processing activity, focussing on its contribution to both livelihood and lifestyle and its position ‘somewhere in between’ commercial and non-commercial benefit. The influence of land managers is examined in Chapter Four, reviewing the contrast between the privileged knowledge that enables harvesters to use resources, and the reliance on professionalised knowledge that renders land managers comparatively powerless. In Chapter Five the influence of organisations is explored, particularly in relation to the difficulty of accommodating the interests of such disparate groups without formal channels for representation. The thesis concludes by addressing policy and management concerns, both practical and ideological, and considering mechanisms for the management of NTFPs as a resource. It demands that ethical questions over benefits, values and rights be addressed, as well as issues surrounding sustainability and resource use. The conclusion seeks to present a new system for the self-governance of NTFP resources by the stakeholders themselves.
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Wilsey, David Scott. „Business or pleasure : factors motivating northern Minnesota non-timber forest product harvesters /“. Diss., ON-CAMPUS Access for University of Minnesota, Twin Cities Click on "Connect to Digital Dissertations, 2002. http://www.lib.umn.edu/articles/proquest.phtml.
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Murphy, Pamela F. (Pamela Frost). „Can we see the forest for the trees? : a case study of marketing non-timber forest products“. Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/69282.
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Bih, Francis. „Assessment methods for non-timber forest products in off-reserve forests case study of Goaso district, Ghana /“. [S.l. : s.n.], 2006.
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van, den Boog Tim. „Non-Timber Forest Products : Indigenous ethnobotanical knowledge and livelihood security in West Suriname“. Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61322.
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Suriname is highly forested and inhabited by Indigenous peoples who are dependent on a diverse range of Non-Timber Forest Products (NTFPs) for their subsistence and income. NTFP knowledge is decreasing due to fragmented knowledge transmission. The NTFP-containing forests are also of interest to multinational extractive companies. Without co-managed governance and weak tenure security, livelihoods and biodiversity can become jeopardised. This thesis focuses on two Indigenous communities that vary in forest-dependency and exposure to urbanisation. Children’s ethnobotanical knowledge is compared to determine causes of ethnobotanical knowledge losses. In addition, land tenure regimes are assessed and ecological impacts from NTFP harvests are determined.
Voucher specimens were collected and ethnobotanical data were obtained from informants. Questionnaires were used to elicit and record children’s ethnobotanical knowledge and that of NTFP gatherers to define important NTFP species. Market surveys were held to determine commercial NTFPs.
It was shown that school attendance and the limited time spent in forests disrupt the acquisition of ethnobotanical knowledge by children. At the same time, acculturation can lead to cross-cultural knowledge exchange, strengthening the communities’ knowledge about NTFPs. The research further demonstrated that the uses of commercial and food NTFPs were known prior to the acquisition of knowledge of plant names, confirming that ethnobotanical knowledge acquisition at a young age happens through observation.
Ecological risks from overharvesting seeds from vegetal NTFPs included trophic cascades: population declines of targeted species and animals that feed on them. For the commercially most traded animals, a decrease in abundancy was noticed as a result of increased local and non-local demands. Because of a sudden high global demand for Potamotrygon boesemani, stocks of this endemic stingray are imperilled. NTFP gathering largely happened outside the communities’ communal forest on State lands under active or proposed logging concessions.
Traditional NTFP practices should be safeguarded by protecting gathering sites and targeted species. Strengthening of Indigenous with government co-management is needed for effective forest governance. Moreover, long-term research is desirable on current NTFP stocks and the impacts of NTFP harvesting on target species and their ecosystem. An immediate moratorium on P. boesemani is required to prevent this species from further collapse or potential extinction.Forestry, Faculty of
Graduate
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Mjoli, Nwabisa. „The potential significance of refugia in safeguarding Non-Timber Forest products under Harvesting“. Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/60596.
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Many rural households living in and adjacent to forests in South Africa harvest a variety of NonTimber Forest Products (NTFPs) such as wild fruits, fibre, fuelwood, seeds, medicine and bush meat for domestic use, sale and maintaining cultural values. To promote the continued availability of these NTFPs it is important that NTFPs are well maintained and that harvest offtake is sustainable, because if it is not, then the important livelihood function that they fulfil will be jeopardized over time. The role of refugia in conserving pockets of threatened species from overharvesting has rarely been considered. Building on Shackleton et al. (2015), six applications of the concept are considered: size refugia, spatial refugia, cultural/spiritual refugia and physical/habitat refugia. I examined the prevalence and type of refugia for NTFPs at three coastal sites in the Eastern Cape province of South Africa. This was done via several community focus group discussions at each site. Here I report on the role of refugia in offering some safeguard to NTFPs by assessing harvested and non-harvested sites of refugia as well as individual plant species by measuring population density, harvest damage and size class profile. Respondents from the focus group discussions perceived a general decline in the abundance of common, widely used species over the past five decades. Decreasing rainfall and distant farming activities was reported consistently by the majority of the respondents. The most common form of refugia was spatial refugia, followed by cultural/spiritual refugia and physical/habitat refugia. Only six species were identified to be in refugia, namely Cyperus congestus, Cyperus textillis, Millettia grandis, Olea europaea subsp. africana, Phoenix reclinata, and Ptaeroxylon obliquum. Population inventories revealed that regeneration and population densities of some NTFP species in the non-refuge site were adversely affected by harvesting. Populations in refuge sites generally had the largest size classes indicating a regeneration potential but likely to impact regeneration over time if pressures are maintained. Therefore, if refuge sites keep larger individuals, NTFP populations can be maintained. Few studies have critically analyzed the concept of refugia in relation to how NTFPs can be safeguarded and the practical implication of the refuge concept needs to be considered in conservation and strategies and population models.
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Shillington, Laura Joan. „Non-timber Forest Products, Gender, and Households in Nicaragua: A Commodity Chain Analysis“. Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/33532.
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This thesis focuses on the intersection of gender, households, and the non-timber forest product market. Based around the concept of commodity chain analysis, this research examines each stage in two non-timber forest products', straw brooms and coco baskets, life cycles from extraction to final sale. The first objective of this research is to contribute to the literature on NTFPs, and in general gender roles in Latin America, by examining the gendered division of labor within and among the stages of two specific NTFP commodity chains, and the ways in which this division influences how important these products are to household income and conservation. The second objective is look at how commodity chain analysis can be used to examine the above issues, thereby contributing to both NTFP and commodity chain analysis literature. The research shows that the construction of gender in Nicaragua underlies the different roles that men and women perform throughout the two non-timber forest product chains. The two chains represent varying degrees of participation by women and men, and this difference is explained by the prevalence of certain tasks. In the basket commodity chain there were more tasks that are labeled feminine, and in the broom commodity chain there are more tasks labeled male. In addition, the varying participation of men and women influence how income from these products are viewed within the households as well as where men and women stand as conservation stakeholders. Commodity chain analysis served as a useful tool to examine more closely the relationship of gender and households in non-timber forest products, and could be of great assistance to the various development projects using these products as a tool for sustainable development.Master of Science
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Dlamini, Cliff Sibusiso. „Towards the improvement of policy and strategy development for the sustainable management of non-timber forest products: Swaziland: A case study“. Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/1174.
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Sarkar, Animesh. „Non-timber forest produces and their conservation in Buxa Tiger, reserve, West bengal, India“. Thesis, University of North Bengal, 2014. http://ir.nbu.ac.in/handle/123456789/1547.
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Batagoda, B. M. S. „Valuing rainforests : a botanical and ethnobotanical study of non-timber forest products in the Sinharaja forest of Sri Lanka“. Thesis, University of East Anglia, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267276.
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This study seeks to investigate whether the biodiversity conservation of the Sinharaja rainforest in Sri Lanka can be economically justified solely in terms of its non-timber forest products (NTFPs) extraction potential as claimed by some recent research. A variety of methods and techniques were deployed including a botanical inventory survey, a crosssectional ethnobotanical survey, an ethnobotanical log-book survey and an ethnozoological survey. Several aspects relating to the NTFPs use: a) valuing the total inventory stock, the total extractable stock limit, the potential flow and actual flow; b) estimating the wild meat flow; c) seasonality of harvesting; d) sustainability issues; e) influence of phytosociological characteristics; f) influence of socio-economic characteristics; and g) forest accessibility; and h) market accessibility were investigated. Biophysical and socio-economic factors influencing the NTFPs value were investigated using a regression analysis. The impact of the NTFPs extraction on the regeneration of the natural population was investigated using three forest sites, a proximal site, a distant site, and a logged forest. The local peoples' perception about the sustainability of NTFPs harvesting was analysed using logit regression analysis. A geographic information system was used to investigatet he influenceo f accessibilityt o the forest and to the marketplace from the villages on the forest products flow. Finally, the NTFPs value was compared with alternative land-clearance use and timber use values. The results indicate that the NTFPs extraction value is insufficient on its own to economically justify the rainforest biodiversity conservation in Sri Lanka, and perhaps elsewhere. There is also some doubt about the long term sustainability of forest products extraction. The study concludes that the rainforest conservation will have to be justified by a full total economic value (use and non-use values) appraisal, together with other scientific and ethical reasoning and cannot be promoted solely on the basis of non-timber extraction value.
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Bull, Gary. „A feasibility study for the management of recreation and other selected non-timber resources on private industrial forest lands in coastal British Columbia“. Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29746.
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Industrial private forest landowners in British Columbia have traditionally viewed their forest lands as a raw material supply for their wood processing facilities. However, they are now experiencing social and political changes which are restricting the way their forests are managed. These changes have enormous implications for large forestry firms, such as Canadian Pacific Forest Products. A portion of their lands, the focus of this study, has been examined to assess the impact of these restrictions on traditional land use. In addition, non-timber values have been examined for their revenue generating potential.
A study area was delineated near the community of Sooke, B.C. Fishing, hunting, deer farming and camping were assessed. In order to complete the analysis, the costs in terms of foregone timber values, were calculated under a number of different assumptions. The impact of changes in bare land values on decisions with respect to the non-timber values were also examined.
A number of policy changes, both by the landowner and the various levels of government involved, are required to promote forestry with a renewed emphasis on recreation. Initiating these changes is the next stage in the preparation of a recreation management plan for the area under study in this thesis.Forestry, Faculty of
Graduate
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Sullivan, Caroline. „Valuation of non-timber forest products : a case study for three Amerindian villages in Guyana“. Thesis, Keele University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301458.
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Wynberg, Rachel Paula. „Identifying pro-poor, best practice models of commercialisation of southern African non-timber forest products“. Thesis, University of Strathclyde, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.435106.
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Acharya, Ranju Shresthal. „The non-timber forest products sector in nepal : policy issues in plant conservation and utilization“. FIU Digital Commons, 2007. http://digitalcommons.fiu.edu/etd/1085.
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The non-timber forest products (NTFPs) sector in Nepal is being promoted with the concept of sustainable management as articulated by the Convention on Biological Diversity. To promote and regulate this sector, Nepal adopted the Herbs and NTFP Development Policy in 2004. The goal of this thesis was to assess the effectiveness of this policy along with other forestry and natural resource policies in Nepal concerning the conservation and sustainable use of NTFPs. I conducted open-ended semi-structured interviews with 28 key informants in summer 2006 in Nepal where I also collected relevant documents and publications. I did qualitative analysis of data obtained from interviews and document review. The research found many important issues that need to be addressed to promote the NTFP sector as envisioned by the Government of Nepal. The findings of this research will help to further implement the policy and promote the NTFP sector through sustainable management practices.
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Woon, Weng-Chuen. „The economic valuation of Parkia speciosa (petai) in peninsular Malaysia“. Thesis, Bangor University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261341.
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Choengthong, Suchart. „Agroforestry in the south of Thailand /“. free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9962512.
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Schreckenberg, Kathrin. „Forests, fields and markets a study of indigenous tree products in the woody savannas of the Bassila region, Benin /“. Thesis, Boston Spa, U.K. : British Library Document Supply Centre, 1996. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.336468.
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Shanley, Patricia. „As the forest falls : the changing use, ecology and value of non-timber forest resources for Caboclo communities in eastern Amazonia“. Thesis, University of Kent, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311285.
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Khamphouvieng, Phouisombath Anuchat Poungsomlee. „Utilization of non-timber forest products in community forest area : a case study in Houay Hok village, Kasy district, Bientiane province, LAO PDR /“. Abstract, 2007. http://mulinet3.li.mahidol.ac.th/thesis/2550/cd398/4838012.pdf.
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Wessels, Coenraad Brand. „The variation and prediction of structural timber properties of standing Pinus patula trees using non-destructive methods“. Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86246.
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Thesis (PhD(For))--Stellenbosch University, 2014.ENGLISH ABSTRACT: Pinus patula is the most intensively planted conifer in the tropics and sub‐tropics. In South Africa Pinus patula plantations are the main saw‐log resource for structural lumber production. Improved intensive silvicultural practices and tree breeding have resulted in marked increases in the rate of growth. To reap the financial benefits of the faster growth, plantation managers are more and more inclined to reduce rotation ages, which inevitably results in the production of higher proportions of juvenile wood at final harvest, and lumber which often does not meet the minimum requirements for stiffness for structural lumber. Knowledge of the variation and the accurate prediction of the mechanical properties of the timber of standing trees can have various benefits for growers and processors of trees. It can be used for tree allocation to different processing facilities, for processing production planning, and to assist tree breeders to screen and select for superior breeding material. The objectives of this study were (1), to examine the within‐ and between‐tree variation in wood properties of young South African grown Pinus patula trees known to have important impacts on the suitability of sawn lumber for structural purposes and (2), to develop empirical prediction models for the flexural lumber properties from standing Pinus patula, based on variables that could be assessed non‐destructively from standing trees. Sample material was obtained from 170 trees (16‐20 years old) established in 17 compartments along the Mpumalanga escarpment of South Africa. A large number of variables which could be obtained non‐destructively from the trees while they were still standing, were measured. The trees were subsequently felled and two logs, 2.1 m in length, were extracted from each tree at two height positions. The 340 logs were processed into 1402 pieces of lumber for further measurements and destructive testing. Results showed that the mean modulus of elasticity measured on edge (MOEedge) was far below the limits set for structural grade softwood timber in South Africa. All the desirable properties for structural lumber improved with distance from the pith with the exception of the 5th percentile value for modulus of rupture (MOR), which was higher at the pith than for the boards processed adjacent to the pith. Boards processed from the lower part of the stem were superior in most of the important properties compared to those higher up in the stem. Separate multiple regression models for predicting the average dynamic MOE (MOEdyn) of individual boards, trees and compartments were developed. The models managed to explain 68%, 60% and 95% of the variation in MOEdyn respectively. The models developed for MOR explained 40% and 42% of variability at board and tree level respectively. At compartment level, 80% of the variation in the 5th percentile MOR value could be explained by the model. Sensitivity analyses showed that site index at base age of 10 years, acoustic time‐of‐flight, wood density and ring width were the most influential variables in the MOE models. The models indicated that tree slenderness during early growth seems to play a major role in determining the dynamic MOE and MOR of lumber. This is in agreement with Euler’s buckling theory and the bending stress theory. Microfibril angle (MFA) and density were measured on radial strips taken from a sub‐sample of trees with the Silviscan 3 technology. The mean microfibril angle per year ring in Pinus patula varied between 7o and 29o. In general MFA decreased with distance from the pith and height above ground level. A multiple regression model including microfibril angle, density and ring width explained 71% of the variation in the dynamic MOE of boards. Sensitivity analysis on the model showed that microfibril angle and density had roughly equal influences on predicting the MOEdyn of Pinus patula boards.
AFRIKAANSE OPSOMMING: Pinus patula is die mees aangeplante naaldhoutspesie in die tropiese en sub‐tropiese areas van die wêreld. Dit is die grootste bron van saagblokke vir die produksie van strukturele hout in SA. Intensiewe boskultuurpraktyke en boomteling het gelei tot ‘n merkbare verhoging in die groeitempo van die spesie. Plantasiebestuurders is gevolglik geneig om rotasie‐ouderdomme te verlaag, wat lei tot ‘n groter persentasie jeughout wat nie aan die minimum styfheidvereistes van strukturele hout voldoen nie. Kennis van die variasie en die akkurate voorspelling van die meganiese eienskappe van staande bome kan voordele inhou vir beide die verbouers en verwerkers van bome. Dit kan byvoorbeeld van hulp wees met die toewysing van bome aan verwerkingsfasiliteite, vir produksiebeplanning, en vir ondersteuning met die keuse van teelmateriaal vir boomtelers. Die doelwitte van hierdie studie was (1), om die binne– en tussenboomvariasie in die houteienskappe, wat ‘n bepalende invloed het op die geskiktheid van jong Suid Afrikaanse Pinus patula bome vir strukturele hout produksie, te ondersoek en (2), om empiriese modelle vir die voorspelling van die buigeienskappe van planke te ontwikkel, gebaseer op veranderlikes wat niedestruktief op staande Pinus patula bome ge‐evalueer is. Monsters vir die studie is verkry vanaf 170 bome (16‐20 jaar oud), geplant in 17 vakke op die Mpumalanga platorand van Suid Afrika. ‘n Groot aantal veranderlikes is nie‐destruktief gemeet op die staande bome waarna die bome gevel is en twee saagblokke, 2.1m in lengte, is op twee hoogte posisies uit elke boom verwyder. Die 340 blokke is verwerk tot 1402 planke vir verdere metings en destruktiewe toetse. Resultate het getoon dat die gemiddelde modulus van elastisiteit gemeet op die dwarskant (MOEedge) aansienlik laer was as wat vereis word vir strukturelegraad hout in Suid Afrika. Al die gewenste eienskappe het toegeneem met afstand vanaf die murg behalwe die 5de persentiel breekmodulus (MOR), wat hoër was vir murgplanke as vir aangrensende planke. Planke afkomstig van die laer dele van die stam het oor die algemeen beter eienskappe gehad as planke afkomstig van die hoër dele. Veelvuldige regressiemodelle kon 68%, 60% en 95% van die variasie in die gemiddelde dinamiese MOE (MOEdyn) op die vlak van onderskeidelik individuele planke, bome en vakke verklaar. Die modelle vir MOR kon 40% en 42% van die variasie op onderskeidelik plank‐ en boomvlak verklaar. Die model vir 5de persentiel MOR van vakke kon 80% van die variasie verklaar. ‘n Sensitiwiteitsanalise het aangetoon dat groeiplekindeks op ouderdom 10, akoestiese vlugtyd, digtheid en jaarringwydte die belangrikste veranderlikes was wat MOEdyn beïnvloed het. Die modelle het aangetoon dat die slankheid van bome tydens vroeë groei vermoedelik ‘n belangrike invloed op die MOEdyn en MOR van planke het. Dit is in ooreenstemming met Euler se knikteorie en die buigsterkteteorie. Die mikrofibrilhoek en digtheid van ‘n steekproef van die bome is gemeet met die Silviscan 3 apparaat. Die gemiddelde mikrofibrilhoek per jaarring het tussen 7 o en 29o varieer. Hierdie variasie was hoofsaaklik afhanklik van boomhoogte en aantal jaarringe vanaf die murg. ‘n Veelvuldige regressiemodel wat mikrofibrilhoek, digtheid en jaarringwydte insluit, kon 71% van die variasie in MOEdyn verklaar. ‘n Sensitiwiteitsanalise op die model het aangetoon dat mikrofibrilhoek en digtheid ongeveer ewe belangrik was wat betref hulle invloed op die voorspelde MOEdyn van Pinus patula planke.
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Fan, Lei. „Forest Resources Utilization in Korean-Chinese Ethnic Minority Villages, from the Perspective of Landscape Conservation“. Kyoto University, 2016. http://hdl.handle.net/2433/215609.
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Kyoto University (京都大学)0048
新制・課程博士
博士(農学)
甲第19783号
農博第2179号
新制||農||1041(附属図書館)
学位論文||H28||N4999(農学部図書室)
32819
京都大学大学院農学研究科森林科学専攻
(主査)教授 柴田 昌三, 教授 神﨑 護, 教授 井鷺 裕司
学位規則第4条第1項該当
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Sola, Phosiso. „Impacts and outcomes of the commercialisation of non-timber forest products on human well being and ecosystems health“. Thesis, Bangor University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.420660.
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Vanni, Monique Barenboim Salles. „Brazilian açaí berry and non-timber forest product value chains as determinants of development from a global perspective“. Thesis, London School of Economics and Political Science (University of London), 2018. http://etheses.lse.ac.uk/3815/.
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The present research concerns the global 'value chain' of the açaí berry, a NonTimber Forest Product (NTFP) derived mainly from the Tocantins Estuary region in the State of Pará, Brazil, and which sustains its mostly riverine population. Through the adoption of methodologies employed in studies of Global Production Networks (GPNs), the study aims to identify how contextual factors have, over time, influenced the formation of the chain by actors across geographical scales, how they sustain the chain in its current configuration, how they enable or preclude the capture of value regionally, and influence development outcomes. Existing research and interventions continue to be predicated on locally-based approaches that aim to cut out middlemen or otherwise reshape local extraction and processing arrangements, without taking into full consideration the ways in which the chain is embedded into different social, economic, and cultural contexts across geographic scale, conditioning chain formation, value distribution and actor behavior. The empirical work was carried out in the form of semi-structured interviews, supported by secondary data and field observations. Field research sites included several locations in the interior of State of Pará, its capital Belem, the States of São Paulo and Rio de Janeiro in Southeast Brazil, as well as coastal towns in California, USA. From these findings, key policy recommendations are made, which are applicable to this specific NTFP chain, but which can be extrapolated to other NTFP chains. The research also employs knowledge about consumer cultures, and the subjectivities concerning value determination, to investigate the role of consumer myths about a product in contributing to its value chain. The conclusion indicates that a whole-chain approach, which appreciates in a reflexive fashion the ways in which actors negotiate territorial specificities to configure chains, is instrumental in the development of efficient, strategic policy programs that aim to improve the income of forest communities that exploit NTFPs. In order to understand, and build trade-based development interventions, researchers and practitioners must engage with the structures, material and cultural, that encase chain relations across geographical scales.
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Bahadur, Rawal Rana [Verfasser]. „Sustainable Management of Non-Timber Forest Products. The Role of a Market Price Information System / Rana Bahadur Rawal“. München : GRIN Verlag, 2020. http://d-nb.info/1219732427/34.
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Greene, Sarah Marsden. „Non-Timber Forest Products Marketing Systems and Market Players in Southwest Virginia: A Case Study of Craft, Medicinal and Herbal, Specialty Wood, and Edible Forest Products“. Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36523.
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Non-timber forest products (NTFPs) are important in rural southwest Virginia as a source of household sustenance and supplemental income. The trade in NTFPs from this region is centuries old and now helps supply growing worldwide demands. Although marketing is a vital part of optimizing the value of these products, it has been ignored in rural natural resource development. This research analyzes marketing systems for selected NTFPs in southwest Virginia by describing marketing chains, interpreting data on important marketing elements, and comparing results within and between different groups of NTFPs. Product categories selected for emphasis are crafts (grapevine wreaths, baskets, furniture, and birdhouses), medicinal and herbal products, specialty wood products (musical instruments), and edible forest products. This qualitative, exploratory study utilizes direct interviews with fifty market players at various levels in marketing chains.
Results provide information on NTFP products, value addition, market outlets, pricing, promotion, distribution, and marketing chains. Hundreds of people are involved with the NTFP trade in southwest Virginia and marketing can help ameliorate negative effects of job scarcity. The greatest opportunity for local level marketing exists for market players of crafts and specialty wood products. Medicinal and herbal products are the only category which very little local value addition takes place within the region and as a result, market players have minimal control over marketing. Edible forest products are not marketed but are collected only for consumption in the household. Several opportunities for marketing include improving market access for crafts and specialty wood products, increasing production through cultivation for medicinal and herbal products, and developing capacity for edible product cultivation.Master of Science
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Vermeulen, Wessel Johannes. „The sustainable harvesting of non-timber forest products from natural forests in the southern Cape, South Africa : development of harvest systems and management prescriptions“. Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/3973.
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Thesis (PhD (Conservation Ecology and Entomology))--University of Stellenbosch, 2009.ENGLISH ABSTRACT: There is a growing appreciation of the importance of non-timber forest products (NTFPs) and the role they play in the socio-economic wellbeing of rural communities and other stakeholders. Harvest systems to ensure sustainable harvesting are largely still lacking and overutilisation is of growing concern worldwide. In this study the science needed to underwrite management for sustainable use of NTFPs was explored. This was done using case studies of three different products harvested from natural forest in the southern Cape, South Africa viz. fern (Rumohra adiantiformis) fronds (leaves) as greenery in the florist industry, medicinal tree bark, and the corm (stem) of the geophyte Bulbine latifolia for medicinal use. The research approach enabled insight into the complexities of developing harvest systems for NTFPs, the input and expertise required to conduct applied research, and the variation in approach required for different products and plant growth forms. The study on R. adiantiformis showed that the adaptive management approach can be followed effectively with the development of harvest prescriptions for a species. Goalorientated, long-term monitoring, assessing harvest impact on the resource and natural fluctuations in population dynamics, are essential to verify that harvest prescriptions are sound and ecologically sustainable. However, if all relevant aspects are covered, the input required to develop and refine harvest systems through such monitoring may be extensive. Experimental stripping of medicinal tree bark showed that species respond differently to wounding, in terms of both bark regrowth and susceptibility to fungal and insect damage. The conceptual model and decision tree developed, demonstrated that tree response to wounding could be used effectively when choosing a management system for bark harvesting, and in informing prescriptions for strip harvesting. The proposed harvest system for the target species, as well as alternative options to meet the demand for bark can be successfully integrated with the existing multiple-use forest management system in the southern Cape. The study of the ecology and dynamics of B. latifolia showed that the species has a complex population dynamics and is abundant on the fynbos/forest ecotone, where it is associated with dry scrub forest communities. Although regeneration is sound, it has a slow rate of renewal in terms of corm diameter and length growth, limiting its harvest potential. The difference between ecotone and forest populations – in terms of population dynamics, plant demography and regeneration phenology – requires that consideration be given to differential harvest prescriptions for ecotone and forest populations. It was concluded that a simple generic process that provides for research to be focused on the relevant fields can be followed effectively with the development of harvest systems for NTFPs. However, sustainability also has a socio-economic and political dimension, further influenced by institutional arrangements. Considering the wide range of NTFPs used, socioeconomic circumstances and the dependence of rural communities on natural resources, a major challenge awaits forest managers in South Africa to develop harvest systems for sustainable use. Policy and decision makers need to appreciate the scientific skills and expertise, and financial resources required to realise this.
AFRIKAANSE OPSOMMING: Die belangrikheid van bosprodukte anders as hout en die rol wat dit in die sosio-ekonomiese welstand van landelike gemeenskappe en ander belanghebbendes kan speel, word toenemend besef. Oesstelsels om standhoudende benutting te verseker is grootliks afwesig en oorbenutting is wêreldwyd ’n toenemende bron van kommer. In hierdie studie word die wetenskaplike insette benodig om oesstelsels vir nie-houtbosprodukte te onderskryf, betrag. Dit is gedoen aan die hand van gevallestudies van drie bosprodukte wat uit natuurlike woud in die Suid-Kaap, Suid-Afrika, benut word, naamlik die blare van die varing Rumohra adiantiformis vir blommerangskikkings, medisinale boombas en die stam van die geofiet Bulbine latifolia vir medisinale doeleindes. Die navorsingsbenadering laat toe om insig te bekom in die kompleksiteit met die ontwikkeling van oesstelsels vir nie-houtbosprodukte, die insette en kundigheid benodig vir toegepaste navorsing, en die verskillende benaderings met verskillende bosprodukte en plantgroeivorms. Die studie oor R. adiantiformis dui aan dat ’n aanpasbare bestuursbenadering suksevol gevolg kan word met die ontwikkeling van oesvoorskrifte vir ’n spesie. Doelgerigte langtermynmonitering om die impak van inoesting op die bron en natuurlike fluktuasies in populasiedinamika te bepaal, is noodsaaklik om te kan aandui of oesvoorskrifte ekologiese standhoudendheid verseker. Die insette benodig om oesstelsels te ontwikkel en deur langtermynmonitering te verfyn, kan egter aansienlik wees. Eksperimentele basstroop dui aan dat boomspesies verskillend reageer op basverwydering in terme van bashergroei en vatbaarheid vir insek- en swamskade. ’n Konsepmodel en vloeidiagram vir besluitneming is ontwikkel en dui aan dat ’n boomspesie se reaksie op basverwydering effektief aangewend kan word in die keuse van ’n oesstelsel en die ontwikkeling van voorskrifte vir strookbenutting. Die voorgestelde oesstelsel vir die teikenspesies en ander alternatiewe om in die behoefte vir bas te voorsien, kan doeltreffend geintegreer word met die bestaande meervoudige-benutting woudbestuurstelsel in plek in die Suid-Kaap. Die studie oor die ekologie en dinamika van B. latifolia dui aan dat die soort goed verteenwoordig is in die fynbos/woud-ekotoon, dat dit geassosieer is met droë struikwoud, en ’n komplekse populasiedinamika het. Alhoewel dit goed verjong, het dit, gemeet aan stamdeursnee- en -lengtegroei, ’n lae groeitempo wat die benuttingspotensiaal van die spesie beperk. Die verskille tussen ekotoon- en woudpopulasies – in terme van populasiedinamika, demografie en reproduksiefenologie – vereis dat oorweging geskenk word aan verskillende oesvoorskrifte vir ekotoon- en woudpopulasies. ’n Eenvoudige, generiese proses wat verseker dat navorsing gefokus is op die toespaslike velde kan suksesvol gevolg word met die ontwikkeling van oesstelsels vir niehoutbosprodukte. Standhoudendheid het egter ook ’n sosio-ekonomiese en politieke komponent wat verder beinvloed word deur institusionele strukture. Inaggenome die wye verskeidenheid van nie-houtbosprodukte wat benut word, sosio-ekonomiese omstandighede en die afhanklikheid van landelike gemeenskappe van natuurlike hulpbronne, is die ontwikkeling van oesstelsels vir standhoudende benutting ’n groot uitdaging vir woudbestuursinstansies. Beleidmakers en besluitnemers moet ’n waardering ontwikkel vir die wetenskaplike kundigheid en kennis, en finansiële hulpbronne, wat benodig word om dit te bewerkstellig.
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Eshete, Wassie Abeje, Wubalem Tadesse, Teshale Woldeamanuel, Elnasri Hagir Mahagaub, Teklehaymanot Nigatu, Jürgen Pretzsch, Asmamaw Alemu, Mahmoud Tarig Elsheikh und Nour Taha Mohamed El. „Policy Brief for realizing green/bio economy with high value Non-Timber Forest Products commercialization in Ethiopia and Sudan“. Technische Universität Dresden, 2017. https://tud.qucosa.de/id/qucosa%3A30151.
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This policy brief deals with the research findings of the collaborative research project “CHAnces IN Sustainability – promoting natural resource based product chains in East Africa” (CHAINS) funded by the Federal Ministry of Education and Research, and the DLR Project Management Agency. It presents the studies investigating the value chains of highland BAMBOO and NATURAL GUM AND RESIN products in Ethiopia as well as GUM ARABIC value chains in Sudan. These products possess high eco¬nomic, social and environ¬mental benefits and untapped potentials. However, their pro-duction and commercialization are con¬strained seriously by various challenges limiting the realization of their potentials.
Identified policy options are:
• strengthen institutional capacity;
• improve infrastructure and support services;
• organize necessary information for sustainable utilization planning;
• facilitate actors’ communication, innovation and fair partnership.
This calls for forest product value chain development that is supported by policy, training, research, technology development and transfer, market linkage that consider private sectors, state, civic organizations, universities and research institutes.
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Bekele, Tsegaye, Eckhard Auch, Wassie Abeje Eshete, Wubalem Tadesse, Teshale Woldeamanuel, Elnasri Hagir Mahagaub, Teklehaymanot Nigatu et al. „Policy Brief for realizing green/bio economy with high value Non-Timber Forest Products commercialization in Ethiopia and Sudan“. Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-218721.
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This policy brief deals with the research findings of the collaborative research project “CHAnces IN Sustainability – promoting natural resource based product chains in East Africa” (CHAINS) funded by the Federal Ministry of Education and Research, and the DLR Project Management Agency. It presents the studies investigating the value chains of highland BAMBOO and NATURAL GUM AND RESIN products in Ethiopia as well as GUM ARABIC value chains in Sudan. These products possess high eco¬nomic, social and environ¬mental benefits and untapped potentials. However, their pro-duction and commercialization are con¬strained seriously by various challenges limiting the realization of their potentials.
Identified policy options are:
• strengthen institutional capacity;
• improve infrastructure and support services;
• organize necessary information for sustainable utilization planning;
• facilitate actors’ communication, innovation and fair partnership.
This calls for forest product value chain development that is supported by policy, training, research, technology development and transfer, market linkage that consider private sectors, state, civic organizations, universities and research institutes.
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Masiero, Mauro. „From failure to value. Towards estimation, accounting and sharing of the Total Economic Value for Mediterranean forests“. Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423580.
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Forests are critically important ecosystems in relation to the multitude of services they provide. Some of these services (e.g. timber and some non-timber forest products, NTFPs) are traded in markets and generate direct income to forest owners/managers, while others (e.g. watershed protection, soil creation, biodiversity conservation) have limited or no access at all to markets. In economic terms these services have a public good nature (externalities) and economists normally referred to them as ‘market failures’. The failure in assigning proper values to forest services may result in the degradation of the ecosystems or the abandon of management activities. The ultimate consequence may be a consistent loose of public values.
Within the international forest context, the above-described dynamics clearly characterize forest resources and landscapes in the Mediterranean basin. Such resources stretch over twenty-one countries, covering a total area of about 74 Million hectares (Mha), i.e. 9.5% of the whole land area in the region. Differences between North and South-East Mediterranean countries can be found in terms of forest types and cover, growing stocks, and institutional and socio-economic aspects, including land ownership and forest governance. Forests in the two macro-areas also show different trends: while in the North they are expanding due to the abandon of marginal areas and agriculture practices, in the South-East human pressure in terms of direct consumption of forest goods is still very high. In both cases some risk for depletion and degradation exists, with worsening perspectives in connection to emerging threats represented by climate change and demographic dynamics.
A first valuation of the Total Economic Value (TEV) of Mediterranean forests has been performed by Merlo and Croitoru in 2005. Although this study can still be considered as the most complete study trying to evaluate TEV for Mediterranean forests, some new elements came out since it was published.
The present study analyses new challenges for non-conventional markets for Mediterranean forest resources.
The research includes: (i) an analysis of markets for both wood (industrial timber and energy wood) and non-timber forest products (NTFPs), as well as for a selection of ecosystem services, with focus on Carbon sink capacity and grazing; (ii) an analysis of relevant forest governance tools within the Mediterranean region, including (a) conventional funding opportunities for Mediterranean forest resources at both national and international scale, (b) the implementation of Payment for Environmental Services (PES) mechanisms as new tools for financing and enhancing Mediterranean forests, and (c) the adoption of other voluntary instruments within Corporate Social Responsibility (CSR) approaches.
Value estimations for selected products and services at regional level brought to a total estimation ranging between €12,508.6 Million (M) and €13,155M. Wood products prevail on other products, representing more than 80% of the total value. Within wood products, timber is the most relevant component, equivalent to about 62% of the total value estimated for selected products/services and about 76% of the total value for wood products only. The total estimated value for grazing is 11% of the total value for provisioning services, i.e. almost twice the estimated value for NTFPs. It shall be noticed, however, that figures for NTFPs are likely to be underestimated because data are available only for some products and ten countries. Indeed, when using alternative estimation methodologies - as tested for pine nuts, pine resin and cork - the estimated value could show a €36.8-572.4M increase, depending on different scenarios. In geographical terms, the economic value of Mediterranean forests is highly concentrated: 65% of this value depends on North-West Mediterranean countries, and nearly 90% of the total value is concentrated in five countries only (France, Spain, Turkey, Italy and Algeria).
As for governance issues, conventional funding resources for the Mediterranean region are shifting from international to national public funds. Moreover, there is growing room for private financing tools and initiatives. Among them a relevant role could be played by Payments for Environmental Services (PES) schemes, but their implementations is still limited in the region, with strong concentration in Northern Mediterranean countries. A shift from the conventional funding channels to new voluntary tools is much needed as an answer both to the growing maturity and responsibility of civil society and to the needs for more efficient and effective tools for dealing with natural resources management problems.Le foreste costituiscono ecosistemi di fondamentale importanza in virtù della molteplicità di servizi forniti. Alcuni di questi servizi (es. legno e alcuni prodotti forestali non legnosi, PFNL) sono commercializzati sui mercati e determinano opportunità di reddito per i proprietari/gestori, mentre altri servizi (es. protezione dei bacini idrogeografici, protezione del suolo, conservazione della biodiversità, ecc.) non hanno accesso al mercato. Tali servizi hanno carattere di beni pubblici (esternalità) e gli economisti si riferiscono a essi in termini di ‘fallimenti del mercato’. Il fallimento nell’attribuire valori adeguati ai servizi forestali può contribuire al degrado degli ecosistemi o all’abbandono delle attività di gestione attiva degli stessi. Nell’ambito del contesto forestale internazionale, le dinamiche sopradescritte caratterizzano chiaramente le risorse forestali del Bacino Mediterraneo. Tali risorse si estendono su ventuno paesi dell’area, coprendo un’area complessiva di circa 74 milioni di ettari (Mha), pari al 9,5% dell’intera superficie della regione. Esistono differenze significative tra paesi del Nord e del Sud del Mediterraneo con riferimento a tipologie e copertura forestali, massa legnosa e aspetti istituzionali e socio-economici, ivi compresi gli aspetti fondiari e di governance. Nelle due macro-aree, inoltre, le risorse forestali denotano trend differenti: mentre nel Nord le foreste sono in espansione a causa dell’abbandono di aree marginali e pratiche agricole, nel Sud-Est la pressione antropica, sotto forma di consumo diretto di beni forestali, è ancora elevata. In entrambi i casi sussiste un rischio di degrado delle risorse, con prospettive di peggioramento in relazione alle minacce emergenti legate al cambiamento climatico e alle dinamiche demografiche. Una stima del Valore Economico Totale (VET) delle foreste mediterranee è stata realizzata da Merlo e Croitoru (2005). Sebbene tale studio possa ancora essere considerato come il tentativo più completo di stima del VET dei boschi mediterranei, alcuni importanti cambiamenti sono intervenuti dalla data della pubblicazione. Il presente lavoro analizza le nuove sfide per i mercati non convenzionali per i prodotti forestali mediterranei. La tesi include: (i) un’analisi dei mercati per i prodotti legnosi (legname da opera e legna da ardere) e non-legnosi, così come per una selezione di servizi ecosistemici, con focus sul carbonio e i servizi legati al pascolo e alla produzione foraggera; (ii) un’analisi dei principali strumenti di governance delle risorse forestali nella regione mediterranea, ivi compresi (a) le opportunità di finanziamento convenzionale su scala tanto nazionale, quanto internazionale; (b) l’attuazione di meccanismi di Pagamento per Servizi Ecosistemici (PES) quali nuovi strumenti di finanziamento e miglioramento delle risorse forestali mediterranee; (c) l’adozione di altri strumenti volontari nell’ambito degli approcci legati alla Responsabilità Sociale d’Impresa. Le stime relative ai prodotti e servizi selezionati hanno determinato un valore complessivo oscillante tra 12.508 e 13.155 Milioni €. I prodotti legnosi prevalgono su tutti gli altri, determinando oltre l’80% del valore complessivo. Tra tali prodotti, il legname da opera costituisce la componente più rilevante, equivalente a circa il 62% del valore totale stimato e a circa il 76% del valore relativo ai soli prodotti legnosi. Il valore per il servizio di pascolo costituisce circa l’11% del valore totale, risultando quasi doppio rispetto al valore stimato per i PFNL. E’ tuttavia plausibile che tale ultimo valore sia stato sottostimato perché i dati sono disponibili solo per alcuni prodotti e per dieci paesi. Stime alternative effettuate per pinoli, resina e sughero hanno infatti evidenziato come i valori potrebbero subire un incremento di 36.8-572.4 Milioni, € a seconda degli scenari. In termini geografici, il valore delle foreste mediterranee risulta fortemente concentrato: il 65% di tale valore si riferisce a paesi del Mediterraneo Nord-Occidentale, e circa il 90% si concentra in soli 5 paesi (Francia, Spagna, Turchia, Italia e Algeria) Con riferimento agli aspetti di governance, le risorse finanziarie convenzionali per le foreste stanno spostandosi dai fondi internazionali, verso risorse nazionali. In aggiunta a ciò si riscontra uno spazio crescente per strumenti e iniziative di natura privata. Tra questi un ruolo centrale potrebbe essere giocato dai PES, tuttavia l’implementazione di tali schemi risulta ancora limitata nell’area. Uno spostamento dai canali tradizionali di finanziamento, verso nuovi strumenti volontari appare come fondamentale quale risposta alla crescente maturità e responsabilità della società civile e alla montante necessità di strumenti efficaci ed efficienti per la gestione delle risorse naturali.
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Omar, Adam Gumaa Yahia. „Contribution of local-level trade in non timber forest products to rural development in Rashad locality of Nuba Mountains, Sudan“. Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-71489.
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The principal aim of the study was to investigate the extent and under which conditions does local-level trade in Adansonia digitata, Ziziphus spina-christi and Balanites aegyptiaca fruits contribute to rural development- poverty alleviation- in Rashad of Nuba Mountains, Sudan. Purposive sampling technique was applied to select the 221 household collectors and 62 household traders in 2008/2009. Quantitative and qualitative data were collected through several methods including interviews, household survey, market surveys, direct observations, and through literature review. Both quantitative and qualitative methods were used to analyze the production-to-consumption system (PCS) of the three products and to assess their contribution to household income and expenditure. The results indicate that the contribution to total household‟s income was 51%, 42% and 26% for A. digitata, Z. spina-christi and B. aegyptiaca fruits, respectively. The A. digitata fruits case study represents accumulative and subsistence livelihood strategies; while Z. spina-christi and B. aegyptiaca fruits case studies represent a subsistence livelihood strategy for the households. The results also show that the financial returns from local-level trade in the selected NTFPs were negatively affected by different factors related to products markets, base resource, participants‟ attributes, and the political environment under which the products are traded. The study concluded that any assumption regarding the potential of the NTFPs case studies to affect rural development positively depends on the role of the product in financial capital creation and the related accumulative strategy. Thus, attention paid to not assume that all NTFPs have a potential for rural development- push people out of poverty. To promote the local-level trade in the studied NTFPs and influence future direction of their financial returns toward accumulative strategy, interventions and supports (e.g. access to microfinance, capacity building and organization of the actors, market information and resource management) are importantDas Hauptziel der Studie bestand darin zu untersuchen, in welchem Maße und unter welchen Bedingungen der Handel mit Früchten von Adansonia digitata, Ziziphus spina-christi und Balanites aegyptiaca zur Armutsbekämpfung in Rashad im Gebirge Nuba Mountains, Sudan beiträgt. Das zielgerichtete Probenahmeverfahren wurde eingesetzt, um 221 Sammler und 62 Händler von Haushalten im Zeitraum 2008/2009 auszuwählen. Quantitative und qualitative Daten wurden durch mehrere Methoden erhoben, die Interviews, Haushaltserhebungen, direkte Beobachtungen sowie Literaturanalysen umfassen. Sowohl quantitative als auch qualitative Methoden kamen zum Einsatz, um das System von der Produktion zur Konsumption der drei Produkte zu analysieren und deren Beitrag zu den Einnahmen und Ausgaben der Haushalte zu beurteilen. Die Ergebnisse zeigen, dass der Beitrag zum Haushaltsgesamteinkommen 51%, 42% bzw. 26% für A. digitata, Z. spina-christi bzw. B. aegyptiaca Früchte betrug. Die A. digitata Früchte-Fallstudie zeigt akkumulations- und eigenbedarfsorientierte Lebensunterhalts- und Erwerbsstrategien; während die Fallstudien zu den Früchten von Z. spina-christi und B. aegyptiaca eine Eigenbedarfs-Lebensunterhaltsstrategie für die Haushalte darstellen. Die Ergebnisse zeigen auch, dass die finanzielle Rendite vom Handel auf lokaler Ebene mit ausgewählten NTFP„s (Nichtholzprodukten) durch verschiedene Faktoren negativ beeinflusst wurde, die in Beziehung stehen mit den Märkten für die Erzeugnisse, mit der Ressource Baum, den Einstellungen der Teilnehmer und dem politischen Umfeld, in welchem die Produkte gehandelt wurden. Die Untersuchung legt den Schluss nahe, dass jede Annahme bezüglich des Potentials von NTFP-Fallstudien, die ländliche Entwicklung positiv zu beeinflussen, von der Rolle des Produkts bei der Bildung von Finanzkapital und der damit in Beziehung stehenden akkumulativen Strategie abhängig ist. Somit wird die Aufmerksamkeit darauf gelenkt, dass nicht angenommen werden kann, dass alle NTFP„s ein Potenzial für die ländliche Entwicklung haben, und somit die Menschen aus der Armut herausführen. Den Handel der untersuchten NTFP‟s auf lokaler Ebene zu fördern, und die künftige Richtung des finanziellen Gewinns hinsichtlich akkumulativer Strategie, Interventionen und Hilfeleistungen (z.B. Zugang zu Mikrofinanzen, Kapazitätsaufbau und Organisation von Akteuren, Marktinformationen und Ressourcenmanagement) zu beeinflussen, ist bedeutsam
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Morgan, Shaunna Marie. „The design of protocols for the sustainable harvest of the non-timber boreal forest products Acorus americanus and Vaccinium angustifolium“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ45101.pdf.
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Ei. „Underground Biomass Accumulation and Sustaining Production of Rauvolfia serpentina and Amorphophallus bulbifer in a Karen Swidden System in the Bago Mountains, Myanmar“. Kyoto University, 2018. http://hdl.handle.net/2433/232400.
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付記する学位プログラム名: グローバル生存学大学院連携プログラムKyoto University (京都大学)
0048
新制・課程博士
博士(地域研究)
甲第21199号
地博第228号
新制||地||84(附属図書館)
京都大学大学院アジア・アフリカ地域研究研究科東南アジア地域研究専攻
(主査)教授 竹田 晋也, 教授 岩田 明久, 准教授 古澤 拓郎, 准教授 小坂 康之
学位規則第4条第1項該当
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Ticktin, Tamara. „Ethnoecology of Aechmea magdalenae (Bromeliaceae) : a participatory investigation into the sustainable harvest and conservation of a non-timber rainforest product“. Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36843.
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An understanding of the effects of harvest on wild plant populations is essential for discerning the ecological impacts of past and present human uses of wild species, and for conserving species which are currently overexploited. This dissertation builds on theories and methods to describe and predict the impacts of harvesting non-timber forest products (NTFP) through an ethnoecological study of the terrestrial bromeliad Aechmea magdalenae. A. magdalenae is harvested from the rainforests of South-eastern Mexico where it has a long history of exploitation. The fiber extracted from its leaves is used to embroider leather articles in an artwork known as piteado. The sustainable harvest of this species has been promoted in Mexico as a strategy to conserve forests and provide local people with a stable income.A combination of demographic, ethnobotanical and participatory methods was used to quantify harvest strategies, measure their impacts on A. magdalenae populations, and assess potential for cultivation. The impacts of harvesting: (1) ramets used for forest plantations; (2) leaves and ramets; (3) and whole plants and ramets, were measured by comparing the dynamics of harvested and nonharvested populations. The demographic implications of variation in the ecological and human context of harvest were examined. The effects of variation in traditional management and traditional knowledge of this species were also quantified.
Analyses using matrix models indicate that primary forest populations harvested for their ramets are declining due to overexploitation. Secondary forest populations are tolerant to ramet harvest and show elevated rates of growth and vegetative propagation in wild and cultivated plants. High rates of fiber harvest have little impact on population growth rates and increase A. magdalenae's tolerance to ramet harvest. The economic and ecological implications of local harvesting strategies vary within regions as well as between regions with short and long histories of A. magdalenae management. A test of the accuracy of estimating maximum sustainable harvests using current approaches illustrates that these methods can lead to erroneous conclusions.
The results of this study are used to suggest improvements for approaches to assessing the impacts of NTFP harvest, for combining traditional ecological knowledge and science in management plans, and for using participatory ecological and ethnoecological research to promote conservation.
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Mahonya, Sophie Manchichi. „The socio-economic contribution of non-timber forest product trade to households in four villages in Zomba and Machinga Districts, Malawi“. Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/4787.
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The principal aim of this study was to assess the socio-economic contribution of nontimber forest product (NTFP) trade to households in Zomba and Machinga, southern Malawi. Quantitative and qualitative data were collected through several methods, including a household survey using questionnaire interviews, focus group discussions, key informant interviews with individual traders, direct observations, and literature review. The quantitative data were analysed statistically using SPPS version 16.0 while the qualitative data were analysed thematically. NTFP trade was the third important source of cash income for 15% of the households, although the level of use, buying and selling of NTFPs varied across the four study villages. All households in all the study villages used firewood (100%), and most used thatch grass (94%), bamboo (96%), wood for building (92%), largely as construction materials. However, the percentage of households buying NTFPs was lower, with the maximum percentage of households being 50%. The percent of households engaged in selling at least one NTFP was lower still at 39%. Substantial cash incomes were generated from firewood and edible orchids sales which provided up to a maximum of Mk180,000, equivalent to US$456, per year. Households joined the trade mostly for an alternative source of cash income due to poverty and to meet basic needs when other options were not available or feasible. Cash income generated from NTFP trade acted as a safety net and a coping strategy when other avenues supporting livelihoods were not accessible. The socio-economic benefits derived from NTFP trade were associated with the quantities collected, sold, market forces influenced by the law of demand and supply. The small amounts of cash income generated by most households were important as they supplemented household cash needs. There was a strong association between NTFP trade as one of the important sources of cash income and the number of months a household had food from their own garden in a year. There was a significant relationship though weak between ranking of NTFP trade and livestock ownership by households. Value chain analysis was used as an analytical tool to understand the processes involved in NTFP trade. The value chains for the products under study were short, dominated by traders and some intermediaries. Most of the products were sold in local markets with little value addition. This study recommends that policy makers should integrate NTFPs into their development plans, emphasizing the establishment of management strategies that will enhance availability and sustainability of the resource. NTFPs contributed to the livelihoods of the households socially and economically through provision of food, cash income, energy for cooking, medicine and construction materials.
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Mutamba, Manyewu. „Rural livelihoods, forest products and poverty alleviation: the role of markets“. Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1006081.
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There is growing acknowledgement that forests and forest products are central to rural livelihoods, but their role in lifting households out of poverty remains contentious. This study tested the assertion by proponents of forest based poverty alleviation that changing conditions in the use and management of forests and forest products has created opportunities for poor rural households to lift themselves out of poverty. The study used detailed annual income data from various household sectors in two contrasting sites in Zambia, namely Mufulira and Kabompo districts, analyzing the relative contribution of forest income to household livelihood, the effect of household wealth status on forest use, factors driving household participation in forest product trade, and the influence of distance to urban markets on trends in the use of forest products. The study found that forest based activities play a central role in the livelihoods of households in the two study sites, contributing close to half of total household income, and dwarfing the contribution of agricultural sectors such as cropping and livestock rearing which are generally regarded as the main income sources for rural households. Forest based sectors were also found to be particularly valuable sources of household cash, often coming at critical times to meet basic needs. The findings also revealed that without the contribution of forest income, the proportion of households that would fall below the poverty line would increase sharply in both study sites. Wealthier households earned higher magnitudes of both subsistence and cash income from forest based activities than their poorer counterparts. Even the share of total household income coming from forest based activities was also higher among these better-off households, confirming that these activities are lucrative and they are improving the wealth status of households. Household participation in forest product trade was found to be influenced by demographic factors such as number of productive household members, age and the education level of the household head. Economic factors such as the level of income from wage labour, household poverty level, and ownership of key assets such as a bicycle were found to be important. Distance of homestead from the forest was also found to be an important contextual variable. The influence of urban demand on the use of forest products by rural households was significant in the study area. Although local sales played an important part as a source of cash for households, the most preferred channels for trade were linked to urban markets, either through roadside markets, middlemen or direct sales to urban buyers. The study concluded that with improved local organization and support for product development and marketing, some forest based activities provide a viable poverty alleviation option for poor rural households who otherwise have limited economic opportunities to escape poverty.
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Mugido, Worship. „The contribution of non-timber forest products to rural livelihoods and their price determination in different agro-ecological zones of South Africa“. Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/5176.
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A large number of studies have been conducted on the contribution of different types of non-timber forest products (NTFPs) to rural livelihoods. However, not many of these have considered the context in which these contributions are made, especially agro-ecological potential. Similarly, there are few studies that focus on the price setting of NTFPs in different settings as most are based on a single or relatively few sites. Thus, there is no indication of the prevalence of the different factors within a uniform macro context, nor how they might vary between different types of NTFPs. Therefore, the aim of this thesis was to establish the contribution of NTFPs to rural livelihoods and their price determination in areas of varying agro-ecological potential of South Africa. The study used data from 1 200 randomly selected households across four agro-ecological zones of South Africa to quantify the contribution of NTFP income to total household income, the proportion of households selling at least a single NTFP and the nature and extent of use of NTFPs as safety nets in areas of varying agro-ecological potential. In addition, 300 sellers of NTFPs in 15 towns across South Africa were interviewed to assess the factors they take into account when setting prices. The findings of this study support the argument that the level of dependence on NFTPs varies with agro-ecological conditions. This was supported by the significant difference between the NTFP incomes of the following pairs of agro-ecological classes: very low and low, medium and high. About 6.4 % households reported selling one or more NTFPs for various reasons, with many (39 %) citing the need to earn cash income and limited employment opportunities (16.9 %). Income from trading NTFPs is undoubtedly an important source of cash income for many rural households. Thus, 300 sellers, selling either at home or in town, were interviewed and the majority (79.3 %) of the sellers reported that selling NTFPs was their main source of cash household income, with only 8 % and 5.7 % receiving their main cash household income from state child grants and state pension grants, respectively. The pricing factors considered by sellers when setting the prices of NTFPs tended to vary with the type of NTFP being sold, type of market (home markets or urban markets) and the method used by the seller to procure the stock. However, overall, transport costs (29 %), stock price (18.4 %), profit margin (12.7 %), time taken to collect or produce the product (7.3 %) and the market price (6.4 %) were the widely used factors to determine prices for NTFPs. The reported various pricing factors showed that there was no formal or certain price mechanism that was used by the sellers of NTFPs to establish the market prices of NTFPs. The study found that about 79 % of the total households interviewed experienced at least one shock of some magnitude in the previous 12 months. The most common shocks were illness (43 %), death (42 %), crop failure (29 %) and hunger (22 %). The households employed various coping strategies (21) in response to different types of shocks, with the three widely used strategies being assistance from friends and relatives (60.1 %), using cash savings (37.9%) and using NTFPs (35.6 %). Shocks, hunger or food shortage and crop failure were significantly and positively related to the usage of NTFPs as safety nets. Therefore, households who experienced hunger or food shortage and crop failure were likely to use NTFPs to cope with these shocks. The study concluded that NTFPs are an integral part of the rural livelihoods, especially for the households living close to the survival line.
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Joos-Vandewalle, Stephanie. „The effects of urbanisation on non-timber forest product dependencies : a case study of three settlements in the Chobe district of northern Botswana“. Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/15529.
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The aim of this study was to investigate the impacts of urbanisation on the use of, and access to, NTFPs in three settlements in the Chobe District of northern Botswana. Specific objectives were to determine the extent of NTFP use occurring in these areas; the purposes of use; the factors that influence use and access in the rural/urban context, particularly government rules and regulations; and implications for future NTFP use in this region. Research was conducted in three settlements: Kasane, Kazungula and Lesoma. Kasane is an urban town, Kazungula is less urbanised and Lesoma is a rural village. All areas are surrounded by state-owned Forest Reserves and the Chobe National Park. The study employed both qualitative and quantitative data collection methods including household interviews (30 in Kasane, 30 in Kazungula and 25 in Lesoma), four key informant interviews, two focus groups with youth and the collection of other grey literature relating to government harvest permits and market data. Households in all three areas used NTFPs despite the different rural and urban contexts in which they exist. Kasane and Kazungula showed a less diverse range of resource use, with fuelwood and wild foods the most commonly used resources in all three areas. These resources were used mainly for subsistence purposes. Harvest locations varied but were most commonly in and around the settlements themselves. Households in Kasane and Kazungula expressed the desire to use fewer resources in the future, mainly for conservation reasons, while those in Lesoma wished to use more. The government rules and regulations, particularly the DFRR permit system, were found to restrict resource access. Despite this, households in the more urban areas felt that the laws were necessary while those households in Lesoma thought that the laws conflicted with community livelihood needs. The majority of respondents believed conservation management to be a barrier to resource access as the presence of wild animals and anti- poaching units in the harvesting areas compromised safety. The general absence of resource commercialisation and market opportunities in the settlements, especially the urban towns of Kasane and Kazungula, were other commonly cited barriers to resource access. The perceived degradation of traditional practices due to modernity and urbanisation was evident for most households in all three areas but the actual loss of indigenous knowledge was most apparent in the urban areas. Wider implications for this case study are the application of the findings to further research into the impacts of urbanisation. This study can add to the literature around the implementation of improved urban development strategies, including the reliance on NTFPs and declines in cultural and environmental degradation. Recommendations provided in this study include further investigations into resource use; the application of resource co-management; improved market infrastructure and the implementation of ecotourism and local craft-making projects.
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Farah, Mohamud. „Non-Timber Forest Product (NTFP) Extraction in Arid Environments: Land-use Change, Frankincense Production and the Sustainability of Boswellia sacra in Dhofar (Oman)“. Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195762.
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Frankincense, a much revered non-timber forest product (NTFP) known as luban in Oman, is a gum-resin extracted from Boswellia sacra (meqerot). In Oman, B.sacra is endemic to ecological zones in and around Dhofar's southern mountain ranges of Jabal Samhan, Jabal Qamar and Jabal Qara. Hojar (Samhan Nejd), Nejd (Qara Nejd), Shazr (Qamar Nejd) and Sha'b are the four B.sacra ecological zones. A suffix (i) after the name (i.e. Hojari or Samhan Nejdi) is indicative of the luban produced in or associated with the respective zone. Traditional Omani B.sacra ownership, management, organization, and frankincense extraction are based on a land parcel system known as menzela. The 1970's oil boom attracted rural labor to urban and oil operation centers in Dhofar and other provinces, thus creating a labor shortage that had a profound transformative impact on frankincense production. This transformation caused frankincense extraction to evolve from an Omani-controlled system to a Somali-dominated hybrid system. Migrant Somali harvesters predominantly control the production and processing of frankincense in the field. Similarly, wholesalers occupy the next rung up the production ladder are the most powerful players in the frankincense industry.Dhofar has a long history of non-timber forest product (NTFP) extraction. From April to mid-June 1999, luban production in the Hojari/Nejdi zone of the study area was estimated at 8,710 kg with a seasonal projection of 24,840kg-30,360kg. B.sacra, a single or multiple stem shrub restricted to wadis in arid environments in or around the Dhofar Mountains, can be found at elevations from 60m above sea level in Wadi Adonib on the coastal plains to 1,770m above sea level in Wadi Kharish (a branch of Wadi Qobyr) in jabal Samhan). Land-use and landcover changes in Dhofar are threatening the fragile stability of B.sacra habitats. Frankincense trees on easily accessible flat or gently sloping terrain are susceptible to stress and mortality from harvesting, grazing and mining, while trees on cliffs and steep slopes are less vulnerable to the effects of these land-use activities.
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Peñaloza, Diego. „Exploring climate impacts of timber buildings : The effects from including non-traditional aspects in life cycle impact assessment“. Licentiate thesis, KTH, Byggnadsmaterial, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-161193.
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There is an urgency within the building sector to reduce its greenhouse gas emissions and mitigate climate change. An increased proportion of biobased building materials in construction is a potential measure to reduce these emissions. Life cycle assessment (LCA) has often been applied to compare the climate impact from biobased materials with that from e.g. mineral based materials, mostly favouring biobased materials. Contradicting results have however been reported due to differences in methodology, as there is not yet consensus regarding certain aspects. The aim of this thesis is to study the implications from non-traditional practices in climate impact assessment of timber buildings, and to discuss the shortcomings of current practices when assessing such products and comparing them with non-renewable alternatives. The traditional practices for climate impact assessment of biobased materials have been identified, and then applied to a case study of a building with different timber frame designs and an alternative building with a concrete frame. Then, non-traditional practices were explored by calculating climate impact results using alternative methods to handle certain methodological aspects, which have been found relevant for forest products in previous research such as the timing of emissions, biogenic emissions, carbon storage in the products, end-of-life substitution credits, soil carbon disturbances and change in albedo. These alternative practices and their implications were also studied for low-carbon buildings. The use of non-traditional practices can affect the climate impact assessment results of timber buildings, and to some extent the comparison with buildings with lower content of biobased building materials. This effect is especially evident for energy-efficient buildings. Current normal practices tend to account separately for forest-related carbon flows and aspects such as biogenic carbon emissions and sequestration or effects from carbon storage in the products, missing to capture the forest carbon cycle as a whole. Climate neutrality of wood-based construction materials seems like a valid assumption for studies which require methodological simplification, while other aspects such as end-of-life substitution credits, soil carbon disturbances or changes in albedo should be studied carefully due to their potentially high implications and the uncertainties around the methods used to account for them. If forest phenomena are to be included in LCA studies, a robust and complete model of the forest carbon cycle should be used. Another shortcoming is the lack of clear communication of the way some important aspects were handled.QC 20150310
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Mtati, Nosiseko. „The relative contribution of non-timber forest products, agriculture and off-farm sources of income to rural households in Koloni and Guquka, Eastern Cape“. Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1018193.
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[Partial abstract]: This study was carried out to determine the contribution of non-timber forest products (NTFPs) to household total income, other livelihood sectors were also examined simultaneously. The contribution of agriculture involved livestock and crop production. Wages and government grants were other livelihood sectors that were looked into. This study was important in determining the change in livelihood strategies in the last decade and to quantify the NTFPs used at the two sites. It was carried out in Guquka and Koloni, both part of the central Eastern Cape. Information on direct use value of the NTFPs used, the quantities and local price; crop production outputs and inputs and the costs. Data were collected via a questionnaire.
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Miranda, Manoel de Jesus de Souza. „Potencial de espécies oleaginosas arbóreas e palmeiras em uma área da Amazônia Central“. Universidade Federal do Amazonas, 2011. http://tede.ufam.edu.br/handle/tede/3019.
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Previous issue date: 2011-09-01FAPEAM - Fundação de Amparo à Pesquisa do Estado do Amazonas
This research was conducted with the database project Impactos na Geração de Eletricidade devidos a Implantação de Sistemas de Produção de Biodiesel no Estado do Amazonas .In this perspective, the present study aimed to characterize the horizontal structure of the palm trees and woody species, emphasizing the occurrence of oil through a forest inventory o in the search for alternatives to use of forest in favor of strengthening sustainable forest management in the Amazon region. We used the cluster sampling system in a tropical rainforest located in the territorial area of Tefé, Amazonas, Brazil. We measured the trees with DBH ≥ 30 cm and quantified the palm. Tree species were classified as commercial timber species, species of ecological interest and oilseeds. The structural characterization was carried out by the Forest Indexes of absolute and relative frequency, absolute and relative density, and specific tree species, diameter classes were assessed them distributed amplitudes of 10 cm. The oilseeds species totaled 66 individuals, distributed among 14 species of trees, occupying a small fraction of the diameter classes, it s still had low occurrence and low density compared to individuals of species of commercial value and ecological interest. The structural composition of palm trees showed good in terms of individuals represented in the seedling and adult stage, demonstrating also a direct relationship with the areas of shallows and the influence of streams. oilseeds, as well as have a few copies, more than 50% of the species in this group had a single individual
A presente pesquisa foi realizada com a base de dados do projeto Impactos na Geração de Eletricidade devidos a Implantação de Sistemas de Produção de Biodiesel no Estado do Amazonas . Nessa perspectivas, a presente pesquisa teve como objetivo de caracterizar a estrutura horizontal das palmeiras e espécies lenhosas, dando ênfase à ocorrência das oleaginosas, por meio de um inventário florestal, na busca de alternativas para uso dos recursos florestais em prol do fortalecimento do manejo florestal sustentável na região Amazônica. Foi utilizada a amostragem em sistema de conglomerado em uma área de floresta tropical úmida, localizada na área territorial do município de Tefé, Amazonas, Brasil. Foram mensurados os indivíduos arbóreos com DAP ≥ 30 centímetros e quantificada as palmeiras. As espécies arbóreas foram classificadas em espécies comerciais madeireira, espécies de interesse ecológico e oleaginosas. A caracterização estrutural da floresta foi realizada pelos índices da Frequência Absoluta e Relativa; Densidade Absoluta e Relativa, e especificamente as espécies arbóreas, foram avaliadas o IVI e as classes diamétricas distribuídas em amplitudes de 10 centímetros. As espécies oleaginosas somaram 66 indivíduos, distribuídos em 14 espécies entre as arbóreas, ocupando uma pequena fração nas classes diamétricas, apresentando ainda pouca ocorrência e baixa densidade dos indivíduos comparados às espécies de valor comercial e não comerciais. A composição estrutural das palmeiras apresentou boa representada em termos de indivíduos na fase de plântulas e adultas, demonstrando ainda uma relação direta com as áreas de baixios e com a influência de igarapés. Nas oleaginosas arbóreas, além de dispor de poucos exemplares, mais de 50% das espécies deste grupo apresentaram um único indivíduo.
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Ash, Jeremy D. „Assessment of sustainable leaf harvest from the understory palm, Chamaedorea radicalis“. Oxford, Ohio : Miami University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1185969979.
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Paumgarten, Fiona. „The significance of the safety-net role of NTFPS in rural livelihoods, South Africa /“. Thesis, Rhodes University, 2007. http://eprints.ru.ac.za/871/.
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