Dissertations / Theses on the topic 'Land capability and soil productivity'
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Mulumba, Lukman Nagaya. "Land use effects on soil quality and productivity in the Lake Victoria Basin of Uganda." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1095711869.
Full textTitle from first page of PDF file. Document formatted into pages; contains xv, 166 p.; also includes graphics (some col.). Includes bibliographical references (p. 134-153).
Muratore, Thomas Joseph Jr. "LONG-TERM LAND MANAGEMENT PRACTICES AND THEIR EFFECT ON SOIL HEALTH AND CROP PRODUCTIVITY." UKnowledge, 2019. https://uknowledge.uky.edu/pss_etds/115.
Full textAndrews, Jeffrey Adam. "Soil productivity model to assess forest site quality on reclaimed surface mines." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09052009-040211/.
Full textEkbom, Anders. "Economic analysis of soil capital, land use and agricultural production in Kenya." Göteborg : Department of Economics, School of Business, Economics and Law, Göteborg University, 2007. http://hdl.handle.net/2077/8469.
Full textLueth, Daniela [Verfasser]. "Land tenure arrangements, soil conservation measures and productivity in Brong Ahafo Region of Ghana / Daniela Lueth." Kiel : Universitätsbibliothek Kiel, 2019. http://d-nb.info/1198210532/34.
Full textFlorence, Darlene Christina. "Agronomic Land Management Effects on Soil Fertility and Grain Crop Productivity in Western Kenya and Ohio." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338341162.
Full textTimmerman, Mitchell D. "The effects of a crude oil spill on the crop productivity and biological quality of an agricultural soil, and the potential for phytoremediation of crude oil-contaminated land." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ45127.pdf.
Full textFord, Colleen D. "The fate of nitrogen in lactose-depleted dairy factory effluent irrigated onto land." Lincoln University, 2008. http://hdl.handle.net/10182/837.
Full textCondron, Leo M. "Chemical nature and plant availability of phosphorus present in soils under long-term fertilised irrigated pastures in Canterbury, New Zealand." Lincoln College, University of Canterbury, 1986. http://hdl.handle.net/10182/1875.
Full textO'Brien, Patricia Ann, and patricia o'brien@rmit edu au. "COncepts and costs for the maintenance of productive capacity: a study of the measurement and reporting of soil quality." RMIT University. Accounting and Law, 1999. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20040930.170346.
Full textClough, Tim J. "Fate of urine nitrogen applied to peat and mineral soils from grazed pastures." Lincoln University, 1994. http://hdl.handle.net/10182/1030.
Full textGiboshi, Monica Luri. "Sistema de apoio ao processo de decisão para a gestão do uso agricola da terra." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257241.
Full textTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
Made available in DSpace on 2018-08-04T17:43:04Z (GMT). No. of bitstreams: 1 Giboshi_MonicaLuri_D.pdf: 1552118 bytes, checksum: 23993e51ecc5308a25320b8237002e2b (MD5) Previous issue date: 2005
Resumo: Este trabalho teve como objetivo o desenvolvimento de um sistema de apoio à decisão para a gestão da terra, integrando um Sistema Especialista para determinar a capacidade de uso da terra e outro para recomendar usos adequados e as práticas de conservação e manejo do solo, um Sistema de Informações Geográficas (SIG), uma base de dados e uma interface para interpretar a entrada de dados do usuário e as mensagens passadas entre os sub-sistemas. Todos os diálogos entre o usuário e o sistema são realizados pela da interface, assim como a comunicação entre os componentes do sistema desenvolvido. Os sistemas especialistas foram desenvolvidos utilizando o ¿shell¿ conhecido como CLIPS (C Language Integrated Production System) que provê um ambiente para a construção de sistemas especialistas. O SIG utilizado foi o IDRISI, versão 32, que possui o módulo Applications Programming Interface - API (Interface de Programação de Aplicativos) com um OLE Automation Server, possibilitando o uso de linguagens de alto nível, tais como Visual Basic, para controlar as operações do Idrisi32. A base de dados foi desenvolvida com a utilização do Microsoft Access®, além disso, é de fácil acesso, pois a maioria dos usuários tem esse aplicativo instalado em seus computadores. O sistema desenvolvido determina a capacidade de uso da terra; recomenda usos adequados para cada classe de capacidade de uso; recomenda práticas de conservação e manejo do solo; e identifica áreas de conflito comparando os mapas de uso da terra da região em estudo com o mapa de capacidade de uso. Todos os resultados podem ser visualizados em janelas do programa, gravados ou impressos em formas de relatórios. A validação do sistema foi feita comparando as saídas do sistema com os resultados obtidos de quatro especialistas. As divergências encontradas mostraram que o sistema desenvolvido foi mais rigoroso, principalmente no que diz respeito ao risco de erosão, determinando classes de capacidade de uso diferentes das determinadas por alguns especialistas. Quanto ao tipo de uso e às práticas de conservação e manejo do solo, foram poucas as divergências encontradas. A área utilizada para testar o sistema é o Município de Santo Antônio do Jardim - SP. O sistema classificou 36,95% das terras do município como adequadas para a utilização com cultura anual ou perene; 42,69% são adequadas para pastagem e reflorestamento e 19,51% devem ser utilizadas para preservação ambiental. Outro resultado apresentado é o mapa de intensidade de uso, no qual pôde se observar que 48,50% do município está sendo utilizada de forma adequada; 31,82% com uso inadequado e, 14,06% apresenta subutilização. O sistema mostrou ser uma ferramenta poderosa e eficaz, permitindo avaliar uma região, dando suporte para uma tomada de decisão mais fundamentada
Abstract: The objective of this work was to develop a decision support system for agricultural land environmental planing, which integrates an Expert System to determine the land capability and other to recommend adequate uses and practices for soil conservation and management, Geographic Information System (GIS), a database and an interface to monitor input and output data and the messages passed between the subsystems. The management of all the system is made by an interface developed in Visual Basic, version 5.0. All the dialogues between the user and the system as well as the communication with the components of the system are made through the interface that shows windows, menus, dialog boxes, maps and reports in the screen. It saves the results in files and prints them. The expert systems were developed with a shell known as CLIPS (C Language Integrated Production System), that provides an environment for building expert systems. The GIS was IDRISI, version 32, that has Applications Programming Interface ¿ API with an OLE Automation Server, and makes possible to use high-level languages, such as Visual Basic for controlling the operation of Idrisi32. The database was developed with the Microsoft Access®, because of the majority of the users have this software installed in its computers. The developed system determines land capability from information stored in the database and, also supplied for the SIG, through the soil and slope maps; it recommends adequate uses for land capability class; it recommends practices for soil conservation and management and identifies conflict areas comparing the maps of land use with the land capability. All the results can be visualized by the user through windows of the program, recorded or printed in forms of reports. The validation of the system was done comparing the system outputs with the results obtained of four experts. The divergences have shown that the system was more rigorous than the experts, specially concerning the erosion risk, leading to different land capability classes from those determined for some experts, in some cases. Concerning to the type of practices for soil conservation and management, the divergences have been few. In order to test the system, the county of Santo Antônio do Jardim ¿ SP was selected. The system classified 36.95% of lands as adequate for the use with annual or perennial cultures; 42.69% are adequate for pastures and reforestation and 19.51% must be used for environmental preservation. Another presented result is the map of intensity use, through which could be observed that 48.50% of the lands are being used of adequate form; 31.82% of the lands presents inadequate use and, 14.06% presents under utilization. The system is a powerful and efficient tool, what makes it possible to evaluate a region and give support to a more adequate decision making
Doutorado
Planejamento e Desenvolvimento Rural Sustentável
Doutor em Engenharia Agrícola
Rodrigues, Paulo Sérgio Lobo. "Desenvolvimento e calibração de um protótipo de sensor de umidade do solo para aplicação em sistemas de irrigação." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2961.
Full textThe importance of water in agriculture for the success of crops is unquestionable. In the present times, irrigation has become a strategic tool for the success of productions. Among other benefits is the possibility of planting between harvests, which makes it possible to improve the utilization of the agricultural area. Higher productivity can also be achieved through the artificial use of water to the crops. However, a balance must be struck between the interests of production and the socio-environmental criteria. Also, the availability of water in excess can lead to damages, causing the proliferation of fungi and bacteria, and the possible rotting of the roots. In this way, irrigation of crops should demand efficient controls of soil water content, emphasizing the rational and ecologically sustainable use of the natural resources involved. It is known that there are several soil moisture sensors that are able to obtain the water content in the soil, and that can aid in the control of water use. However, the high costs of quality sensors continue to be a barrier to the implantation in crops of small producers, due to their fragile purchasing power. Motivated by this, this work sought to develop a prototype sensor that would allow the measurement of soil moisture, and the main premise would be the low cost. For this, it was necessary to carry out the calibration of the prototype, from simultaneous readings between the same and the reference equipment, the professional sensor Watermark model 200SS-5. Of accessory form, the prototype was designed to communicate with external platforms, possibiliting the integration and real-time monitoring. For the database the data were transmitted through the wireless technology of the ESP8266-12E microcontroller (NodeMCU board). Two platforms were used, the ThingSpeak, as well a another developed by this author for the specific purpose of integration with the prototype. The cost for the prototype development corresponded to 4.2% of the value corresponding to the Watermark sensor, having additional characteristics compared to the reference equipment, the such as communication with external means and the easy integration with automated irrigation systems.
Almagro, Bonmatí María. "Reservorios y flujos de carbono en un gradiente de intensificación de usos del suelo de un ecosistema mediterráneo: factores de control y capacidad de secuestro de carbono." Doctoral thesis, Universidad de Murcia, 2011. http://hdl.handle.net/10803/77754.
Full textThis thesis provides a useful database of carbon (C) pools and fluxes under different land uses (open forest, old-field, olive grove) in a dry Mediterranean ecosystem of Southeast Spain. To understand how global climate change and alterations in land use are affecting Mediterranean soil biogeochemical processes, I completed four studies that investigated the different C components within the C balance of each land use type, the interactions between them, and their controlling factors. The main objectives were: 1) to quantify C pools and fluxes (outputs and inputs) under different land uses over a three-year period (2006-2009); 2) to compare two C balance approaches based on steady-state or non-steady-state conditions in order to assess the relative importance of the different C fluxes within the C balance of each land use type; and 3) to identify the factors controlling the main C fluxes within each land use type.
(9842276), Kartik Venkatraman. "Phytocapping of municipal landfills: Evaluating the performance of 21 tree species and two soil depths." Thesis, 2013. https://figshare.com/articles/thesis/Phytocapping_of_municipal_landfills_Evaluating_the_performance_of_21_tree_species_and_two_soil_depths/13433012.
Full text(9839696), Mar Mar Thi. "Selection of tomato genotypes that hyperaccumulate cadmium, for use in phytoremediation of cadmium contaminated sites." Thesis, 2012. https://figshare.com/articles/thesis/Selection_of_tomato_genotypes_that_hyperaccumulate_cadmium_for_use_in_phytoremediation_of_cadmium_contaminated_sites/13465631.
Full textLeighton, Adrian D. "Soil moisture, forest productivity and ecological land classification in central Massachusetts." 2005. https://scholarworks.umass.edu/dissertations/AAI3179896.
Full textTesfagiorgis, Girmai Berhe. "An investigation into land capability classification in Eritrea : the case study of Asmara city environs." 2004. http://hdl.handle.net/10413/3603.
Full textThesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2004.
(9832535), Kamaljit Sangha. "Evaluation of the effects of tree clearing over time on soil properties, pasture composition and productivity." Thesis, 2003. https://figshare.com/articles/thesis/Evaluation_of_the_effects_of_tree_clearing_over_time_on_soil_properties_pasture_composition_and_productivity/13422212.
Full textZeidler, Juliane. "Establishing indicators of biological integrity in western Namibia rangelands." Thesis, 1999. https://hdl.handle.net/10539/26386.
Full textAn Index of Biological Integrity (IBI) has been developed for rangeland condition assessment in arid northwestern Namibia. The usefulness of termites as bio-indlcators has been tested and reliable sampling protocol for termite diversity in an arid ervlronrnent has been developed. The study was conducted mainly at a high- and low-intensity site on each of three farms. Two of the farms were communally owned; the other was commercially owned. (Abbreviation abstract)
Andrew Chakane 2019
Shi, Zheng. "Afforestation and stand age affected soil respiration and net ecosystem productivity in hybrid poplar plantations in central Alberta, Canada." Master's thesis, 2010. http://hdl.handle.net/10048/1386.
Full textSoil Science
Hollister, Emily Brooke. "Land use and land cover change: the effects of woody plant encroachment and prescribed fire on biodiversity and ecosystem carbon dynamics in a southern great plains mixed grass savanna." 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2780.
Full textWall, Andrew James. "The effect of poplar stand density on hill country pastures : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy (PhD), Massey University, Palmerston North, New Zealand." 2006. http://hdl.handle.net/10179/1517.
Full textOne-third of the North Island of New Zealand has been identified as requiring increased soil conservation if pastoral farming is to be sustainable. For over 50 years the planting of widely spaced poplar trees (Populus spp.) has been one of the main methods used to control soil erosion on hill pastures. Research has shown that these plantings have successfully decreased soil erosion but their impact on the productivity of pastoral farming has received little research attention. The research that has been undertaken has found poplars can suppress understorey pasture production by up to 40%, suggesting that farmers require more research information on the impact of planting conservation trees on the productivity of their farm if the use of conservation trees is to be more widely adopted on erosion prone land. The objective of this thesis was to provide comprehensive data on the relationship between the range of poplar densities used for soil conservation on the light and soil under poplars, and consequently the effect on understorey pastures. Three field sites on commercial sheep and beef hill farms, in regions with contrasting summer soil moisture availability, Manawatu (one site) and Central Hawke's Bay (two sites), were monitored for two years. Tree stocking rates ranged from 0 to 375 trees/ha. Measurements were based on units of four trees with most measurements either directly below the tree crowns or in the gaps between the trees, but more intensive transect measurements were also made. Photosynthetically active radiation (PAR) and the ratio of red to far red light (R:FR) were measured under the trees and in open pasture controls. Stand density indices used included all the commonly used measures of tree canopies, including digital photography, and stem diameter at breast height (DBH). PAR transmission was inversely related to all of the stand density indices with canopy closure based on digital photographs being the most robust of the indices used. PAR under the trees, relative to open pasture, was greater in the gaps than below tree crowns. Under a completely closed canopy, PAR transmission was reduced to 15-20% and 50-55% of the open pasture in summer and winter, respectively. The RFR under the trees, relative to open pasture, decreased markedly at high stand densities (allowing less than 40% PAR transmission) in summer, but was similar in winter. The change in PAR under the trees was shown to be a major factor limiting pasture growth, particularly directly below the tree crowns. For both summer and winter, canopy closure measured with a standard digital camera was strongly related to stand level PAR transmission (r2=0.88-0.97; P<0.0001) and was also a practical method of measuring canopy closure in the field. The soil measurements confirmed earlier research that soil pH increases under mature poplar trees. There was a 0.2 - 0.7 unit increase in soil pH in the upper 75 mm of soil over both contrasting regions. The soil fertility under the trees in terms of requirements for pasture growth was similar to that of the open pasture with calcium and potassium up to 2.2 and 9.0 quick test units higher in the soil under the trees than in the open pasture, respectively. The direct cause of the increased concentration of some cations under the trees was the annual tree leaf litter. Overall, the soil fertility under the trees had the potential to produce similar pasture production to that of the open pasture with the added advantage of less acid conditions. Averaged over all sites the respective annual net herbage accumulation (ANHA) under poplar canopy closures of 25, 50 and 75 % was estimated from the equations developed to be 77, 60 and 48% of the open pasture. The greatest decrease was directly below the tree crowns where at canopy closures greater than 20% the ANHA was a relatively constant 50% of open pasture. In the vertically projected gap between trees the ANHA decreased by 6.6% relative to open pasture for each 10% increase in canopy closure. At approximately 80% canopy closure there was no difference between the ANHA directly below the trees and in the gap. Pasture net herbage accumulation (NHA) under the trees relative to open pasture was at its lowest in summer and autumn (36% of open pasture under a closed canopy), and at its greatest in early spring before tree canopy leafed out (72% of open pasture under a closed canopy). The botanical composition and feed value of the pasture under the trees was broadly similar to that of the open pasture. The greatest impact of the poplars on the pasture was decreased NHA due to shading. The decrease in NHA directly below mature unpruned poplars is substantial and would decrease farm profitability if the poplar stand density were high over a large area of the farm. The use of poplars for soil conservation is essential but these results show the importance of managing trees through pruning and thinning so that canopy closure is minimised. ANHA under the trees can be maintained at 75% of the open pasture if canopy closure is prevented from exceeding 30-40%.
Buthelezi, Nkosinomusa Nomfundo. "The use of scientific and indigenous knowledge in agricultural land evaluation and soil fertility studies of Ezigeni and Ogagwini villages in KwaZulu-Natal, South Africa." Thesis, 2010. http://hdl.handle.net/10413/651.
Full textThesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2010.
Roskruge, Nick. "Hokia ki te whenua : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science at Massey University, Palmerston North, New Zealand." 2007. http://hdl.handle.net/10179/1725.
Full textLangley, Gail. "Seed viability in topsoil stockpiles used for arid zone minesite rehabilitation in the Middleback Ranges of South Australia." 2002. http://arrow.unisa.edu.au:8081/1959.8/46671.
Full textAtkinson, Victoria. "Mine and industrial site revegetation in the semi-arid zone, North-Eastern Eyre Peninsula, South Australia." 2005. http://arrow.unisa.edu.au:8081/1959.8/46701.
Full textPrasad, Kamal Kishor. "Revegetation of recent soil slips in Manawatu : a thesis presented in partial fulfilment of the requirements for the degree of Master in Applied Science at Massey University." 2009. http://hdl.handle.net/10179/1435.
Full textKesting, Stefan. "Shrub encroachment of temperate grasslands: Effects on plant biodiversity and herbage production." Doctoral thesis, 2009. http://hdl.handle.net/11858/00-1735-0000-0006-B044-0.
Full text