Dissertations / Theses on the topic 'Rehabilitation of Degraded Farmland'
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Birhanu, Tadesse Amsalu. "Community-based rehabilitation of degraded woodland in the Amhara Region, Ethiopia." Thesis, University of Aberdeen, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415676.
Full textOleg, Kravchenko, and Кравченко Олег Вадимович. "Optimization environment urban development in different conditions of degraded landscapes." Thesis, НАУ, 2016. http://er.nau.edu.ua/handle/NAU/24678.
Full textPowell, Rebecca. "Geomorphological connectivity and sensitivity examined in a recently degraded gravel-bed stream: implications for river-floodplain rehabilitation." Thesis, Rhodes University, 2017. http://hdl.handle.net/10962/53722.
Full textRossi, Fernando C. [Verfasser], and Gero [Akademischer Betreuer] Becker. "Assessment of degraded forests supported with UAV imagery towards planning rehabilitation strategies : : case study in the Argentinian Yungas." Freiburg : Universität, 2019. http://d-nb.info/1182894984/34.
Full textMadouh, Tareq A. "Effect of drought on growth and development of perennial desert species for rehabilitation of degraded areas of Kuwait." Thesis, University of Reading, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422779.
Full textMatsui, Naohiro. "Development of mangrove rehabilitation techniques as a counter-measure of global warming and a measure of recovering degraded coastal ecosystem." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/137090.
Full textAraÃjo, Isabel Cristina da Silva. "Potential for revegetation of degraded soil by iron mining using leguminous trees and waste shrimp." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8130.
Full textDentre as alternativas para recuperar Ãreas degradadas està a adiÃÃo de resÃduos orgÃnicos visando melhorar a estrutura e a disponibilidade de nutrientes no substrato degradado. No Estado do CearÃ, o resÃduo orgÃnico proveniente de tanques de criaÃÃo de camarÃes (carcinicultura) merece destaque por apresentar teores relevantes de nutrientes e matÃria orgÃnica. O objetivo deste estudo foi comprovar a hipÃtese de que o resÃduo de carcinicultura favorece o desenvolvimento de leguminosas arbÃreas e melhora o substrato degradado. Na etapa inicial do estudo foi feita a caracterizaÃÃo geoquÃmica e fÃsico-quÃmica do resÃduo para identificar a presenÃa de pirita e o risco potencial de acidificaÃÃo. Posteriormente, foi instalado um experimento em casa de vegetaÃÃo com delineamento experimental em blocos casualizados e esquema fatorial 5x3, com quatro repetiÃÃes. Os tratamentos foram cinco doses de resÃduo de carcinicultura (0; 2; 4; 8; 12 Mg ha-1) e trÃs espÃcies de leguminosas: Sabià (Mimosa caesalpiniaefolia Benth), Leucena (Leucaena leucocephala) e Jurema Preta (Mimosa hostilis). TrÃs meses apÃs a adiÃÃo do resÃduo de carcinicultura foi avaliado o crescimento das leguminosas, bem como a fitomassa e o acÃmulo de nutrientes na parte aÃrea e nas raÃzes. TambÃm foi avaliada a disponibilidade de nutrientes no substrato. Por meio dos resultados da anÃlise geoquÃmica do ferro foi observado baixo grau de piritizaÃÃo e, consequentemente baixo risco de acidificaÃÃo ao utilizar o resÃduo de carcinicultura. Ao final do perÃodo de trÃs meses de avaliaÃÃo do experimento em casa de vegetaÃÃo, constatou-se que as leguminosas arbÃreas responderam positivamente Ãs doses de resÃduo. As espÃcies que apresentaram maior crescimento em altura e maior fitomassa foram Mimosa caesalpiniaefolia e Mimosa hostilis, apresentando tambÃm maior acÃmulo de nutrientes. Os efeitos do resÃduo de carcinicultura no solo foram: aumento na condutividade elÃtrica e no pH. Conclui-se que o resÃduo da carcinicultura favorece o crescimento e o desenvolvimento das leguminosas arbÃreas avaliadas no presente estudo, sem prejudicar atributos quÃmicos e fÃsicos do substrato e permitindo maior disponibilidade de nutrientes de modo a favorecer o processo de revegetaÃÃo da Ãrea degradada.
The addition of organic residues is among the alternatives to rehabilitate degraded lands, aiming to improve the structure as well as the nutrients availability of mining spoils. In the Cearà State, the organic residue from shrimp farms (carcinicultura) deserves attention because it contains relevant amount of nutrients and organic matter. The aim of this study was to test the hypothesis that residue from shrimp farms improves the development of leguminous trees as well as the degraded land. In the initial phase of this study both geochemical and physical-chemical characterization of the organic residue were done aiming to identify the presence of pirite, and the potential risk of acidification. One experiment was set up under controled conditions, in the experimental design of randomized blocks in a factorial scheme 5x3, with four replications. The treatments were five rates of organic residue from shrimp farms (0; 2; 4; 8; 12 Mg ha-1) and three leguminous trees species: Sabià (Mimosa caesalpiniaefolia Benth), Leucena (Leucaena leucocephala) and Jurema Preta (Mimosa hostilis). Three months after addition of the organic residue were evaluated the growth of leguminous trees, the fitomass, as well as the nutrients accumulation in the above ground, and bellow ground parts of the plants. The availability of nutrients in the substrate also was evaluated. The results of the geochemical analysis showed low amount of pirite, and consequently the low risk of acidification by the use of organic residue from shrimp farms. After a period of three months was observed that leguminous trees presented positive answer to rates of organic residue. The species that presented higher growth and fitomass production were Mimosa caesalpiniaefolia and Mimosa hostilis, presenting also the higher nutrients accumulation. The effects of the organic residue in the soil were: increase in soil eletric conductivity, and pH. The conclusion is that the organic residue from shrimp farms improved the growth and development of leguminous trees in the present study, and it did not damage soil chemical and physical attributes, allowing higher availability of nutrients to favour plant growth in degraded land.
Tayierjiang, Aishan [Verfasser], Ümüt [Akademischer Betreuer] Halik, and Bernd [Akademischer Betreuer] Cyffka. "Degraded Tugai Forests under rehabilitation in the Tarim riparian ecosystem, Northwest China: monitoring, assessing and modelling / Aishan Tayierjiang. Betreuer: Ümüt Halik ; Bernd Cyffka." Eichstätt-Ingolstadt : Katholische Universität Eichstätt-Ingolstadt, 2016. http://d-nb.info/1091059365/34.
Full textGunawan, Haris. "Rehabilitation of Degraded Peat Swamp Forest for the Promotion of Ecosystem Sevices and Rural Livelihoods in Giam Siak Kecil-Bukit Batu Biosphere Reserve, Riau, Indonesia." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/157871.
Full text0048
新制・課程博士
博士(地域研究)
甲第16981号
地博第133号
新制||地||43(附属図書館)
29656
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 小林 繁男, 准教授 古澤 拓郎, 教授 河野 泰之, 准教授 甲山 治
学位規則第4条第1項該当
Ré, Tatiana Monteiro. "O uso de formigas como bioindicadores no monitoramento ambiental de revegetação de áreas mineradas." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-09012008-084450/.
Full textThe mining industry is known to contribute to the growth and the economic development of modern society. However, these activities may generate considerable modifications to the environment. Therefore, it is necessary the development of an Environmental Impact Evaluation that aims the definition of the environmental control plans that guarantee the mitigation of such impacts, as well as their monitoring to check the effectiveness of the defined measures. Such a plan is a now requirement introduced by the Brazilian Constitution of 1988: all polluting activities must recover the actual damages to the environment. Because of that, procedures such as vegetation replacement and re-establishment of the fauna are being taken by most companies of mining where rehabilitation measures need to be monitored, in order to allow the evaluation of its effectiveness and progress throughout time. Biomonitoring is a new monitoring practice in environmental science. The present research work has the objective of developing a biological automonitoring methodology for evaluating the effectiveness and the progress of revegetation techniques in mined-out areas. As study case, it was selected Millennium Chemicals - a company that belongs to Lyondell Chemicals Company - that produces heavy minerals in Mina do Guaju, located in the extreme north of Paraíba State. The proposed methodology includes a simple and practical way for measuring biomonitored environment for an extended period of time with the use of insects, with particular focus on the Formicidae Family. In addition to the methodology proposed, this research work also contemplates preliminary results and analysis of the first collection, of the total of three collections, which should be carried throughout one year. The methodology proposed, which include data collection and analysis of results, represents an important contribution for the reduction of costs of environmental management of mining companies, through better environmental control procedures, and their relation with mine planning, and auto-monitoring of the areas eventually affected by mining activities.
Bitar, Omar Yazbek. "Avaliação da recuperação de áreas degradadas por mineração na região metropolitana de São Paulo." Universidade de São Paulo, 1997. http://www.teses.usp.br/teses/disponiveis/3/3134/tde-25102001-165349/.
Full textThis work deals with the assessment of mine reclamation procedures in the Sao Paulo Metropolitan Region (RMSP). It begin with the presentation of the problem and of the hypothesis which orientated the research work. The very incipient character of the reclamation works is emphazised as well its potential role in urban areas (Chapter 1). Chapter 2 describes the research method. 42 ative mines (17 of aggregate, 15 of sand, 4 of kaolin, 3 of clay, 1 of limestone and 1 of dimension stone) are studied in the RMSP. Other 11 inactive mines and 54 ancient mine sites are also studied. An overview about mine reclamation is presented in the research. It includes some basic concepts, procedures about reclamation in urban areas and after-mining uses (Chapter 3). 91 plans for the reclamation mine (Prads) related to active and inactive mines in the RMSP are also studied (Chapter 4). Procedures for reclamation are evaluated with reference to the final results achieved (Chapter 5). Aspects related to after-mining uses in the RMSP are discussed in Chapter 6. Conclusions achieved are summarized in Chapter 7.
Rondino, Eltiza. "Áreas verdes como redestinação de áreas degradadas pela mineração: estudo de casos nos municípios de Riberião Preto, Itu e Campinas, estado de São Paulo." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11136/tde-18112005-145549/.
Full textThe purpose of a green area or public park is to offer the population of large urban centers an area where they can enjoy leisure and recreation, thus increasing their quality of life and contact with nature. The ratio of green in a city, expressed by the area of public space such as parks divided by the population, is linked to numerous social and cultural manifestations and increases community integration, inhibiting the use of time and energy with activities that can be considered harmful to society, including violence. The recovery and rehabilitation of areas degraded by mining are required by law since 1988, after the promulgation of the Brazilian Constitution. The fact that there is a great number of sites in cities urban areas that have been degraded as a result of mineral extraction and later become public areas covered by vegetation, has led to making public parks a common alternative when recovering an area, especially because of legal requirements. It is one of the most efficient alternatives when it comes to increasing green areas and leisure spots. It was with the objective of joining compliance with the current legislation on rehabilitation of degraded areas with the basic functions of increasing the number of green areas, that three such areas were analyzed; all in the State of São Paulo and all formerly mined for construction material using the same extraction procedures. The areas chosen for the study were the Parque Luiz Roberto Jábali, the Parque do Varvito and the Praça Dr. Ulisses Guimarães, located respectively in the Municipalities of Ribeirão Preto, Itu and Campinas. The survey method used was the case study. The theoretical aspect of the study consisted in finding local and regional bibliographical data on the areas. The practical aspect consisted in gathering field data on the current situation of each one studied, by means of conducting technical visits for primary data collection through direct and systematic observation. Maintenance of the Parque Prefeito Luiz Roberto Jábali was considered very positive. The location achieves the primary purposes of a green area, and also makes a contribution to the ratio of green in the Municipality of Ribeirão Preto. The Parque do Varvito presents a few positive aspects as far as what it offers, but maintenance has been fairly poor. It does, nonetheless, carry out its cultural and landscaping functions, also helping the ratio of green. The Praça Dr. Ulisses Guimarães has been abandoned by the Municipal Authorities and contributes only to the green area in Campinas, not achieving the primary goals of a Municipal green area. The recovery of a degraded mining is an option for increasing the area of green in a given Municipality; it will, however, only fulfill the purposes of urban green areas, i.e. to increase overall well-being of the population by offering leisure and recreation, when it is duly preserved and maintained with help from government policies and the community.
Silva, Eudes Pinheiro da. "InteraÃÃo do fosfato de rocha, matÃria orgÃnica e microbiota do solo na produÃÃo de mudas de arbÃreas nativas de interesse econÃmico e ambiental no Nordeste brasileiro." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10241.
Full textFundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico
Banco do Nordeste do Brasil
A regeneraÃÃo natural da vegetaÃÃo à o procedimento mais barato para reabilitar Ãreas degradadas, porÃm, à lento. O plantio de mudas de arbÃreas nativas pode ser uma soluÃÃo. Nesse contexto, conduziu-se o presente trabalho em casa de vegetaÃÃo por 120 dias, testando 5 doses de P (0, 75, 150, 300 e 600 mg L-1) com fosfato de rocha natural na colonizaÃÃo por FMA e por rizÃbio nativos, e no desenvolvimento de mudas de embaÃba (Cecropia pachystachya TrÃcul) e de sabià (Mimosa caesalpiniaefolia Benth), cultivadas em solo natural (SN), solo natural com 50 % esterilizado (SND) e solo natural adicionado de 25 % de material orgÃnico (SNM). Analisou-se o comprimento, massa da matÃria seca, teores de N, P, K da parte aÃrea e o diÃmetro do colo das plantas, nÃmero de esporos e colonizaÃÃo micorrÃzica, massa da matÃria seca dos nÃdulos de rizÃbios, carbono da biomassa microbiana, respiraÃÃo basal e quociente metabÃlico do solo. O crescimento em comprimento, o diÃmetro do colo e a produÃÃo de massa da matÃria seca da parte aÃrea das plantas de embaÃba nÃo sofreram efeito dos tratamentos. Os substratos SN e SND proporcionaram a maior esporulaÃÃo e colonizaÃÃo de FMA, favorecendo o aporte de P na parte aÃrea dessas plantas. Essa atividade foi reduzida nas maiores doses de P. A RespiraÃÃo Basal e o carbono da biomassa microbiana do solo (CBMS) foram menores no SND e nÃo sofreram influÃncia das doses de P. O substrato SND proporcionou maior aporte de N na parte aÃrea das plantas, mas sem influÃncia das doses de P. Enquanto que o SNM proporcionou maior aporte de P e K na parte aÃrea das plantas. Os FMA favoreceram o aporte de P na parte aÃrea das plantas de embaÃba, mas com reduÃÃo nas maiores doses de P. O crescimento em comprimento das plantas de sabià nÃo sofreu efeito dos tratamentos, porÃm o diÃmetro do colo e a massa da matÃria seca da parte aÃrea das plantas apresentaram melhores resultados no substrato SNM, mas sem influÃncia das doses de P. O SNM apresentou o menor nÃmero de esporos, maior colonizaÃÃo de FMA na dose de 75 mg de P, todavia com reduÃÃo nas maiores doses, e maior CBMS, mas sem influÃncia das doses de P. O SND e o rizÃbio nativo proporcionaram maior aporte de N na parte aÃrea e maior massa nodular nas plantas de sabiÃ, sendo influenciados pelas doses de P. O SNM proporcionou maior aporte de P e K na parte aÃrea das plantas de sabiÃ, tendo a dose de 600 mg de P favorecido os maiores valores desses nutrientes. Os FMA proporcionaram um discreto incremento no teor de P na parte aÃrea das plantas de sabiÃ.
Natural regeneration of vegetation is the procedure cheaper to rehabilitate degraded areas, however, is slow. The planting of native tree seedlings may be a solution. In this context, an experiment was carried out in a greenhouse for 120 days, testing 5 P rates (0, 75, 150, 300 and 600 mg L-1) with rock phosphate colonization by AMF and native rhizobia in development of seedlings embaÃba (Cecropia pachystachya TrÃcul) and sabià (Mimosa caesalpiniaefolia Benth), grown in natural soil (NS), natural soil sterilized with 50% (NSS) and natural soil added with 25% organic compost (NSC). We analyzed the length, dry matter weight, N, P, K aerial part and the stem diameter of the plant, number of spores and mycorrhizal colonization, dry matter weight of nodules rhizobia, microbial biomass carbon, basal respiration and metabolic quotient soil. The growth in length, stem diameter and dry matter weight of embaÃba not affected by the treatments. The substrates NS and NSS provided the greatest colonization and sporulation of AMF, favoring the input of P in shoots of these plants. This activity was reduced at the highest levels of P. The soil basal respiration and microbial biomass carbon (MBC) were lower in the NSS and not influenced by P fertilization. The substrate NSS provided major input of N in shoots, not influenced by P fertilization. Whereas the NSC provided major input of P and K in shoots of embaÃba plants. The AMF favored the input of P in shoots of embaÃba plants, but this activity was reduced at the highest levels of P. The growth of sabià was not affected by treatments, but stem diameter and dry mass weight showed better results in substrate NSC. However, were not affected by the rates of P. The NSC had the lowest number of spores, the highest colonization of AMF at rate of 75 mg of P, however with reduction in higher rates, and higher MBC, but without influence of P rates. The NSS and native rhizobia provided major input of N in shoots and increased nodular mass in sabià and levels of phosphorus influenced these parameters. The NSC provided major input of P and K in shoots of sabiÃ, in rate of 600 mg P, favored higher values of these nutrients. AMF provided a mild increase the levels of P in the shoots of sabià plants.
Vasconcellos, Rafael Leandro de Figueiredo. "Bioindicadores de qualidade do solo em um gradiente de restauração ambiental." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-21082012-104319/.
Full textEnvironmental impactation can affect microbial biomass, nutrient cycling, processes, physical-chemical characteristics and also the diversity of microbes and edaphic fauna. The aim of this study was to understand the different interactions between these attributes and to identify the indicators of soil quality involved in the recovery process. Three areas with different stages of recovery [5 (R05), 10 (R10) and 20 (R20) years] were compared with a native semideciduous forest (NT) in order to study the behavior of microbes, macrofauna and their interactions with the physical and chemical attributes. Samples were collected at 15 points in each area. Greater activity of urease, acid phosphatase and dehydrogenase were found in the native area. The same result was found for basal respiration, microbial biomass carbon (MBC) and nitrogen (MBN). The structure of Bacteria analyzed by T-RFLP discriminated the native and R20 from R05 and R10, only in the summer. Soil bulk density, humidity and microporosity negatively affected soil microbiological indicators and together with total soil carbon they were the main discriminant factors. A. colossica, A. lacunosa, G. decipiens and Gigaspora sp. were more abundant in NT and the species G. viscosum, A. mellea, A. scrobiculata and S. heterogama in R05 and G. rosea in R10 and R20. Porosity, soil bulk density, humidity, acid phosphatase activity, MBC, MBN and N-NO3 - were the principal environmental variables related to AMF species distribution. Seasonal influences on AMF species were also observed. Higher glomalin related soil protein (GRSP) content was found only in the winter and NT had only EE-GRSP (easly extracted glomalin related soil protein) different from the recovery areas. Correlations among glomalin and physical-chemical and microbiological attributes were observed. Edaphic fauna groups were influenced by seasonality and by sampling methodology (pitfall traps and monoliths). Shannons, Simpsons and the evenness index were significant only in the dry season and in the oldest areas. Richness was higher when the monolith method was used. Diplopoda was the principal group that discriminated the recovery gradient for both seasons and methodologies. Porosity, soil bulk density, humidity, total nitrogen, urease and dehydrogenase were important factors to separate faunal groups. This work showed that biological and physico-chemical soil quality attributes interact and changed according to gradient recovery and seasonality.
Vieira, Elisa Hardt Alves. "O licenciamento ambiental de portos de areia da bacia do rio Corumbataí como instrumento para a recuperação de áreas de preservação permanente." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-09052006-153754/.
Full textThe purposes of this work were to evaluate whether the environmental licensing legislation for sand mining contributes to the recovery of the riparian vegetation of the Permanent Preservation Areas (river buffer zones), as well as the conditions and resources availability of the involved agencies, and the land owners information level. The study area was the Corumbatai River basin, located in the State of São Paulo. The study strategy involved: a) the analysis of the environmental licensing procedures of the 36 existing mining sites in the river basin; b) field analysis of the seedlings growth in the revegetated areas in the 21 sand mining sites; c) interviews with 15 entrepreneurs and 15 officers of the five main agencies involved. It was observed that most agencies have problems with their own attributions in the licensing process, mainly owing to human resource deficiencies, lack of financial and material resources, and poor conditions for the adequate technical capacitating of the responsible officers. The environmental and legal irregularities of the sand mining sites are due to several factors, such as entrepreneurs misinformation and negligence, slowness and high costs involved in the environmental and mineral licensing. A final evaluation showed that 52% of the revegetation areas could be classified as bad, 38% as regular, and only 10% could be considered good or excellent. Generally, the revegetation techniques used did not meet the minimal criteria for reestablishing the riparian forest structure and function. A worrying situation regarding biodiversity loss was also evidenced, since most of the revegetation projects presented low species diversity and a tendency to floristic homogeneity, as compared to what is observed in natural areas. Most of the revegetated areas showed high mortality rate, low density, little soil cover due to canopy shading, poorly defined vertical structure, absense or inadequate litter and absence or low regeneration quantity and quality. Revegetation projects are not succesfully accomplished by the entrepreneurs and most of them showed an identical floristic list of species to those found in previous projects. Moreover, if such projects were implemented, they would probably not guarantee the maintenance of the natural biodiversity of riparian forests. According to the results, it can be inferred that the current environmental licensing legislation of sand mining sites are not contributing to the recovery of the riparian vegetation in the Corumbatai River basin. However, the environmental licensing of the sand mining activity may seem to be contributing to the conservation of the remaining natural forests in the basin, due to the current environmental policy that prohibities the cutting of riparian forests.
Bonfim, Joice Andrade. "Diversidade de fungos micorrízicos arbusculares em áreas restauradas de Mata Atlântica, São Paulo, Brasil." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-29062011-085842/.
Full textArbuscular mycorrhizal fungi (AMF) are very important for the recuperation of degraded land, because they enable better absorption of mineral nutrients by plants and favor the development of tree species used in revegetation.However, for greater efficiency of mycorrhizae the environmental conditions must be favorable, because the occurrence and diversity of these fungi are greatly influenced by several factors such as chemical, physical and microbiological soil attributes. Different soil depths should be considered for a more detailed survey. Chemical, physical and microbiological evaluations, including the soil glomalin content and the diversity of AMF at different depths (0-15 cm, 15-30 cm and 30-45 cm) were performed. The areas selected for study were: native forest (NT) and a gradient of environmental restoration and reforestation: five years (R05), 10 years (R10) and 20 (R20), all located in the Atlantic forest, State of Sao Paulo, Brazil. The samples of soil and roots were taken in two periods: January (rainy) and June (dry season). Root colonization was assessed at three sites as follows: (A) at the base of the tree trunk, (B) 1m away from the trunk, and (C) seedlings growing around the adult trees. Spores were identified and the relative abundance and richness indices (R), Shannons diversity (H) and Simpsons dominance index (Is) of AMF were calculated. The data were analyzed using ANOVA, the t test, canonical discriminant analysis (CDA) and redundancy analysis (RDA). The root colonization was higher for areas with more advanced stages of recovery, in roots collected at point C and during the dry season. The density of spores in the rainy season was higher in R05 at all depths, while in the dry season the density of spores was higher for R05 only at 0-15 cm, and from 15 cm downwards a higher density of spores was observed for NT and R10.Considering the two periods and the four areas studied, we identified 23 AMF species, and the genera Glomus and Acaulospora were the most frequent. A higher richness (R) and diversity index (H) of species was found in the area NT. Not always the greatest diversity was found in the superficial layers. Species of Acaulospora (Ac. scrobiculata and Ac. mellea), Glomus (Glomus sp2. and G. viscosum) were always abundant at all depths, while the species of the genera Gigaspora, Ambispora and Racocetra were rare at all depths. The CDA indicated that Glomus viscosum, Acaulospora scrobiculata, Acaulospora mellea and Scutellospora heterogama were the species that contributed most to distinguishing the areas and the RDA showed that among the soil characteristics, pH, H + Al, soil carbon, glomalin, humidity, microporosity and density were the attributes that most influenced the diversity of AMF. Moisture, density and glomalin were positively correlated with the number of spores, however, the soil nitrate showed a negative correlation.
Simões, Cláudia Sofia Lola. "Modelação da erosão do solo numa região de forte impacte de actividades mineiras e estudo geoquímico das zonas mais vulneráveis, com vista à sua remediação e reabilitação. Estudo de uma área piloto da Bacia do rio Paraopeba (Bacia do Rio Paraopeba - MG, Brasil)." Doctoral thesis, Universidade de Évora, 2015. http://hdl.handle.net/10174/16404.
Full textCrockett, Debra W. "Agricultural savanna the conservation and production potential of degraded oak savanna on Wisconsin farmland /." 1997. http://catalog.hathitrust.org/api/volumes/oclc/37487993.html.
Full textTypescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 109-119).
Wilcock, Trove Elizabeth. "Use of selected fodder shrubs in the reclamation of degraded arid rangelands." Diss., 2010. http://hdl.handle.net/2263/27304.
Full textDissertation (MScAgric)--University of Pretoria, 2010.
Plant Production and Soil Science
unrestricted
"Individual Differences in the Perceptual Learning of Degraded Speech: Implications for Cochlear Implant Aural Rehabilitation." Doctoral diss., 2015. http://hdl.handle.net/2286/R.I.29679.
Full textDissertation/Thesis
Doctoral Dissertation Speech and Hearing Science 2015
Bishaw, Badege. "Determining options for agroforestry systems for the rehabilitation of degraded watersheds in Alemaya Basin, Hararghe Highlands, Ethiopia /." 1993. http://hdl.handle.net/1957/10024.
Full text[Verfasser], Girma Amente. "Rehabilitation and sustainable use of degraded community forests in the Bale Mountains of Ethiopia / submitted by Girma Amente." 2006. http://d-nb.info/978257626/34.
Full textStevens, Peter R. "Evaluating an asymmetric microrelief system designed to secure soil, water and biocapacity in eroded, degraded and modified peri-urban landscapes." Thesis, 2016. http://hdl.handle.net/1959.13/1317483.
Full textThis research fills a gap in the knowledge of microrelief as a tool for recovering degraded land, and adds to the knowledge with a new and original contribution. The literature on surface microrelief, one of the major factors that control stormflow, surface runoff, and related ecosystems functions, including soil formation, was reviewed in the global and peri-urban context. It was concluded that anthropogenic development exacerbates stormwater flow, soil erosion and biodiversity losses. The conventional response is to harden and drain the land, depleting ecosystem functions and denying water from the soil. Trends in stormwater, erosion control and urban water cycle management within water sensitive design thinking (WSD) and the prevailing catchment drainage paradigm were reviewed and found inadequate for addressing erosion, which continues at many hundreds of times the rate of soil formation. Australian legislation requires ecologically sustainable development and ‘the maintenance of ecosystems that sustain life’. This requirement is not being met. Soils, biological capacity and local water cycles are depleted by anthropogenic development. It was hypothesised that an asymmetric microrelief system (AMS) based on natural systems could be designed to arrest stormflows and stem soil erosion. The AMS implemented on the Callaghan Campus of the University of Newcastle Australia in 1992 was evaluated with an industry standard conceptualisation modelling tool MUSIC v5 (eWater 2013) based on site data gathered over four years (2011-2015). Soils were assessed for permeability with infiltrometers and a hydraulic penetrometer under dry and saturated conditions. AMS on-ground performance, vegetation cover and soil profiles were photographically recorded. Results from modelling and site observations of the UoN AMS case after twenty years, and the subsequent Allowah case after 6 months, demonstrated that a scalable AMS can be designed on the basis of remnant soil character, rainfall intensity and slope, and implemented with local tools and resources to rejuvenate degraded peri-urban lands, by dissipating rainfall energy, reducing loss of water, sediment and nutrient by > 90%, and by securing > 60% of peak stormflows in < 8% of the land area. The modelling tool was found to have limitations in regard to the complex patternation of AMS Bionodes. The results point to the need for a refined modelling and specification tool with the capacity to integrate complex microrelief patternation, biological processes and the local, climate moderating water cycle. There is the opportunity to take a new approach to land use planning and ecologically sustainable development (ESD) based on the fluid patterns of exaggerated microrelief found in the naturally hydrated landscape mosaic. The likely benefits, savings and wider implications are discussed. These include reduced risk; reduced high exposure maintenance liabilities; reduced disaster recovery costs; reduced pollution of aquatic ecosystems; the recovery of arable land with a net positive rate of organic soil formation; the rejuvenation of climate moderating biomass; an integrated ‘whole of system’ response to flooding, and increasing biological capacity on the urban fringe. There are implications for all planners and land managers. The research shows that microrelief is a practical and affordable tool for rehydrating the legacy of degraded lands in Australia deemed ‘beyond the means of the nation’ to repair.
Ansell, Dean. "The Cost-Effectiveness of Biodiversity Conservation in Agricultural Landscapes." Phd thesis, 2017. http://hdl.handle.net/1885/118932.
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