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 11 of 11 for “"Carbon and nitrogen dynamics"”.
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Soil carbon and nitrogen dynamics affected by tillage and cover cropping
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Carbon and Nitrogen Dynamics of a Lagoon Salt Marsh in Davenport, California
<p>Wetlands are complex environments that play a critical role in regulating the global biogeochemical cycle of carbon (C) and nitrogen (N). Wetlands are critical contributors to global climate change and atmospheric chemistry since they store as much as 33% of the world’s soil organic carbon …
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Understanding the impact of residue and nitrogen inputs on soil carbon and nitrogen dynamics
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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Carbon and Nitrogen Dynamics in High Intensity Minimal Exchange Shrimp (<i>Litopenaeus vannamei</i>) Raceways
… between the 2 density treatments, (2) construct carbon and nitrogen budgets to see where the carbon and nitrogen went in the system for all growouts, (3) determine if plastic media had any effects on water quality parameters and shrimp production, (4) determine if plastic media allowed for a …
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Carbon and nitrogen dynamics on a forest site receiving continual papermill sludge applications: a soil column study
Successful renovation of wastewater and sludge via land application depends upon sludge-induced soil changes associated with carbon (C) and nitrogen (N) cycles within the soil/plant system. The C, N, and hydrologic cycles within a soil/sludge system receiving a year-round, daily application of …
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Soil Carbon and Nitrogen Dynamics Across the Hillslope-Riparian Interface in Adjacent Watersheds with Contrasting Cellulosic Biofuel Systems
… considerable interest in renewable energy and fuel production research, particularly energy derived from cellulosic ethanol, which is derived from biomass such as wood and grass. Cellulosic ethanol demonstrates a more promising future as a global energy source than corn-derived ethanol …
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Environmental change impacts on carbon and nitrogen dynamics in soils and vegetation: from global synthesis to local case studies
… terrestrial ecosystems. Feedbacks between land biogeochemistry (e.g., the cycling of elements) and global change are one of the key uncertainties in global climate models, and thus understanding land (e.g., soils and plants) responses to global change will help us predict future climate. In …
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Evaluating Crop Physiological and Stand Age-Related Controls Over Soil Carbon and Nitrogen Dynamics In Perennial and Annual Grains
Little is known about how the cycling of carbon (C) and fertilizer nitrogen (N) between crop tissues and soil pools is expressed in perennial grains such as intermediate wheatgrass (IWG, Thinopyrum intermedium (Host) Barkworth and Dewey), and whether these processes change within a growing season …
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The potential implications of bioenergy crop production for water and energy balance and carbon and nitrogen dynamics in the United States
… large-scale growth of bioenergy crops on water and energy balance and coupled carbon and nitrogen dynamics in the US. To achieve this objective, I apply and extend a coupled biogeochemical and biogeophysical model, the Integrated Science Assessment Model (ISAM), to develop a dynamic crop growth …
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Soil carbon and nitrogen cycle modeling for bioenergy crops
Due to the increase in the demands for bioenergy, considerable areas in the Midwestern United States (US) could be converted into croplands for second generation bioenergy, such as the cultivation of miscanthus and switchgrass. Study on the effect of the expansion of these crops on soil carbon and …
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Quantifying Crop Yield, Bioenergy Production And Greenhouse Gas Emissions From Cropland And Marginal Land Using A Model-Data Fusion Approach
… debate regarding energy, economy, society and environment. Biofuels provide alternative energy to conventional fossil fuels. However, the environmental impact of producing and using biofuel is a major concern to our society. This study is dedicated to quantifying and evaluating biofuel …