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 16 of 16 for “"land-use conversion"”.
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Investigating Grassland and Cropland Conversion Decisions in the Dakotas, 2015 Producers Survey and Analysis
<p>This study investigates grassland and cropland conversion decisions in the Dakotas. Data from a 2015 survey completed by 1,026 producers located in 57 counties of the Prairie Pothole Region (PPR) were used to evaluate land conversions. This thesis attempts to identify the land use conversion …
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Coarse Root, Forest Litter, and Soil Organic Matter Contributions to Carbon Sequestration in Loblolly Pine (Pinus taeda) Plantations in East Texas
… carbon dioxide (CO2) concentrations on the rise. Land management strategies, such as land use conversion, effect ecosystem carbon cycling dynamics and can alter the quantity of carbon sequestered in vegetation and soils. In East Texas and much of the southern United States, there has been a trend …
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Patterns and Associations of Shoreline Erosion and Developed Land Use Change in the Lower Meghna Estuary of Bangladesh
… living along the coast are at risk of losing land, households, and economic resources due to the hazards of coastal erosion. Scientific research has indicated that 70% of the planet's sandy coastal environment is being impacted by coastal erosion. Due to the different characteristics of the …
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Financial Analysis of Restoring Sustainable Forests on Appalachian Mined Lands for Wood Products, Renewable Energy, Carbon Sequestration, and Other Ecosystem Services
… Act of 1977 (SMCRA), mandates that mined land be reclaimed in a fashion that renders the land at least as productive after mining as it was before mining. In the central Appalachian region, where prime farmland and economic development opportunities for mined land are scarce, the most …
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The Historic Fire Return Interval and the Ecological Effects of Fire Suppression on Montane Longleaf Pine Dominated Ecosystems in Northwestern Georgia.
… 19th century. These declines were primarily caused by federal fire suppression policies implemented in the 1920’s, in combination with resource harvesting and land use conversion. In an absence of fire, tree species composition of frequently burned xeric ecosystems progressively becomes more …
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Isotope Investigation of Nitrate in Soils and Agricultural Drain Waters of the Lower Yakima Valley, Washington
… δ<sup>18</sup>O and Δ<sup>17</sup>O values are used to constrain sources of to groundwater. Isotope signatures for nitrate from soil leachate largely overlapped with the point cloud of data for nitrate in groundwater in a local EPA study. The groundwater nitrate was largely attributed to a …
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Regenerative agriculture and soil carbon storage in the Upper Corn Belt
Land use conversion, agricultural mismanagement, and topsoil erosion have depleted global soil organic carbon (SOC) stocks in the top two meters of soil by an estimated 133 petagrams (Pg), resulting in a significant SOC debt. Regenerative cropping practices, such as no-till and cover cropping, are …
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Detection and characterization of forest disturbances in California
… in large part on the timing, intensity, and cause of the disturbance. With some disturbance agents expected to increase in frequency and severity under the influence of climate change, knowledge of disturbance events and trends has become particularly crucial for a variety of scientific, …
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Establishing Monetary Valuation Methods for Forested Riparian Wetlands in the Continental United States
… for timber, then drained for agricultural use of their fertile soils. Government programs were designed for federally subsidizing this land use conversion, and more than half of these ecosystems were indeed destroyed with no realization of the value being lost. In recent years several …
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The eastern crescent and beyond : the current state of and potential for local food production and multifunctional agriculture in the Austin-Round Rock-Georgetown peri-urban fringe
By 2050, urban areas will house 68% of the total global population (United Nations, 2018). As these areas expand, agricultural lands are lost to development. In the United States, the bulk of this agricultural land is located in the peri-urban fringe – a distinct area that exists between urban and …
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Linking Local Knowledge and Satellite-Derived Land-Use/Land-Cover Change Information In Krabi Province, Thailand
… and sustainability of mangrove forest conversion in three coastal communities in Thailand. It presents a methodology that could potentially aid coastal communities in determining sustainable land use conversion approaches by considering the viewpoint of villagers. A remote sensing …
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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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Spatio-temporal modelling of informal settlement growth using a hybrid GIS and CA-Markov model
… planning tools and mapping techniques because the morphological patterns of informality are characterised by the complex commingling of multiple social and economic conditions, transactions, events and norms (Lejano and Del Bianco, 2018:203). In this research study, it is argued that a key …
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Potential enzyme activities in soils as affected by perennial cropping and nitrogen rates in central Iowa
The agricultural landscape in the US Midwest faces significant environmental challenges associated with annual crop rotations, particularly the intensive cultivation of soybeans and maize that is heavily reliant on nitrogen (N) fertilizers. In contrast, perennial biomass crops are gaining attention …
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Soil microbial community structure and function of agriculturally used Mollisols in the periurban area around Buenos Aires, Argentina, with emphasis on pesticide and heavy metal contamination
… about an environmental contamination because of an enhanced application of pesticides and heavy metal containing fertilisers in the course of which organic management systems are getting increasing attention. The green belt is agriculturally used in manifold ways. Besides fallows and …
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Plant root contributions to the carbon balance of a changing agricultural Midwest
… will depend on the interactions between climate, land use decisions, plant biology, and biogeochemistry. In agricultural systems, C storage is fully determined by belowground pools, so it is vital to understand the links between root placement and C status under a variety of potential future …