Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"Marginal land"”.
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Evaluation of Prairie Cordgrass (Spartina pectinat, link) for Biomass Production on Marginal Land
… grass that grows naturally on poorly drained marginal land throughout the United States. For its morphological characteristics and biomass production, it is being considered for bio-fuel potential. Red River prairie cordgrass (RR-PCG) and Atkins prairie cordgrass (AT-PCG) are part of a …
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In Harm's Way: How Philadelphia's Urban Renewal Practices Steered Marginal People to Marginal Land
<p>The dumping of locally unwanted land uses (LULUs) on marginal communities has been well documented, however environmental justice scholars have rarely written about how marginal groups have come to occupy their landscapes, particularly when natural hazards lie beneath.</p> <p>This dissertation …
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Nitrogen, phosphorus and potassium removal from perennial energy grasses when grown on wet marginal land
Reduction of nutrient loss from agricultural lands is a major concern facing the agricultural industry. On-farm efforts will lead to a proactive approach that has the potential to confer key ecosystem services. The field study was conducted from 2012 to 2015 on marginal land located at the …
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Quantifying Crop Yield, Bioenergy Production And Greenhouse Gas Emissions From Cropland And Marginal Land Using A Model-Data Fusion Approach
… and the least GHG intensive at a given cropland. Regional model simulations suggested that, substituting <em>Miscanthus</em> for maize to produce biofuel could potentially save land and reduce GHG emissions.</p> <p>Since growing biomass from marginal lands is becoming an increasingly …
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Identifying targets for multifunctional perennial cropping systems implementation through a landowner adoption preferences survey and a spatial suitability analysis
… of modern row-crop agriculture to areas of marginal land. Intensive management of marginal cropland accelerates instances of soil erosion and nutrient leaching. Multifunctional land use strategies are needed to mitigate environmental impacts and as well as information tools to facilitate …
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Hydrologic and water quality impacts from perennial crop production on marginal lands
<p>Marginal lands are proposed as a viable option for producing biofeedstocks as these lands are not heavily engaged in agricultural production or may not be suitable for intensive row-crop food/feed production. However, meeting biofeedstock production goals will require large amount of marginal …
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Effect of bioenergy crops and fast growing trees on hydrology and water quality in the Little Vermilion River Watershed
… area to become highly productive agricultural lands, but also create environmental problems like nitrate-N contamination of the water it drains. The Soil and Water Assessment Tool (SWAT) has been used to model watersheds with tile drainage, but the new tile drainage routine in SWAT2012 has not …
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Carbon Dioxide Emissions from Switchgrass and Cottonwood Grown as Bioenergy Crops in the Lower Mississippi Alluvial Valley
<p>Marginal land of the Lower Mississippi Alluvial Valley (LMAV) has the potential to be utilized for the production of bioenergy feedstocks. Soil respiration is the gaseous emission of carbon dioxide (CO<sub>2</sub>) from microbes and plant roots in the soil, and these emissions play an important …
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Assessment of perennial bioenergy buffers within a row crop production system
… and implementation of multifunctional landscape designs which can be used to achieve different, yet related goals, such as crop production and reduction of negative environmental impacts (e.g. water quality, biodiversity loss, greenhouse gas emissions, and declining soil health). One …
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Targeting Nonindustrial Private Forest Landowner Groups for Timber Market Entry
… market entry decisions of nonindustrial private landowners. It involves examining reservation prices both for harvesting timber from existing forest land and for afforestation of marginal agricultural and abandoned land. An important conclusion drawn from these models is that financial returns …
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Pengaruh penambahan jenis dan dosis pupuk kandang pada tanah mediteran terhadap pertumbuhan bibit jarak pagar (Jatropha curcas L)
… jarak pagar lebih banyak ditanam di lahan marginal. Tanah mediteran merupakan tanah marginal yang mempunyai kandungan N tanah rendah. Tanah marginal seperti ini dengan penanganan yang tepat diharapkan dapat memberikan hasil tanaman yang diharapkan. Penambahan pupuk kandang diharapkan mampu …
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Linkage mapping in prairie cordgrass (Spartina pectinata Link) using genotyping-by-sequencing markers
… systems. Bioenergy feedstocks tolerant of marginal land can reduce the tension between bioenergy production and food production. Prairie cordgrass (Spartina pectinata Link) is tolerant of poorly drained soils, saline soils, and low temperature. Prairie cordgrass (Spartina pectinata) is a …
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Development of prairie cordgrass (spartina pectinata link) as a dedicated bioenergy crop
… potential as a dedicated bioenergy crop on marginal land. However, prairie cordgrass biomass-production research has been limited to several local varieties or cultivars. To further investigate its genetic resources, natural prairie cordgrass populations collected from the Midwest to east …
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Perennial grasses as sustainable bioenergy crops for marginal lands
… crop should not compete with food crops for land use, biomass crop production on marginal lands can reduce land-use competition between energy and food crops. Chapter 1 of this dissertation provides an introduction and rationale of the research with a general discussion of the marginal lands …
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Exploiting the Productivity of C4 Photosynthesis in Cool Temperate Climates: Mechanisms and Thresholds of Cold Tolerance in Miscanthus, Saccharum, and Spartina pectinata
… can help mitigate climate change. Much of the marginal land available for bioenergy occurs in cool temperate climates at high latitudes. To be productive in cool temperate climates, C4 perennial grasses must successfully overwinter the first growing season and produce leaves that tolerate …
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Switching to Switchgrass: Pathways and consequences of bioenergy switchgrass entering the Midwestern landscape
… political conditions will switchgrass enter the landscape? 2) Where on the landscape will switchgrass be cultivated given varying economic and political conditions? The goal of this dissertation is to answer these questions by analyzing the adoption of switchgrass across the upper Midwestern US …
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A comparison of potential agricultural and forestry investment returns for Virginia's marginal lands
… those operators with a significant proportion of marginal land in production. Conversely, the USDA Forest Service recently projected that during the next 30-to-40 years softwood forest product demand will increase, available supplies will decrease, and real price levels will increase (USDA Forest …
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Adaptability, Biomass Yield, and Phytoremediation of Arundo donax L. on marginal lands: salt, dry and lead-contaminated soils
… the loss of agricultural areas: contaminated land is no longer suited to farming, and may be especially harmful to the entire ecosystem (Alloway, 1995). Plants tolerant to heavy metals, may be used to enhance sites unsuitable for biomass production, restoring the ecosystem services and …
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