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 55 for “"Soil Organic Carbon (SOC)"”.
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Regenerative agriculture and soil carbon storage in the Upper Corn Belt
… 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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Coarse Root, Forest Litter, and Soil Organic Matter Contributions to Carbon Sequestration in Loblolly Pine (Pinus taeda) Plantations in East Texas
<p>Understanding ecosystem carbon dynamics is of increasing importance with atmospheric 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 …
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FTIR Analysis of Bacteria Biomass-Mineral Interactions in Soils
<p>Soil organic carbon (SOC) accounts for 70% of the carbon on Earth. It is therefore a key player in global carbon cycling and climate change (Smith et al., 2008). Soil organic matter (SOM) is an important component of organic matter in soils (SOC), and results from biogeochemical process …
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Predicting Spatial Variability of Soil Organic Carbon in Delmarva Bays
… health, and wetland restoration rely on soil organic carbon (SOC) as vital for microbial activity and plant health. This study assessed: (1) accuracy of topographic-based non-linear models for predicting SOC; and (2) the effect of analytic strategies and soil condition on performance of …
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Low Dose, Low Disturbance: PET and PLA Microplastics Show Limited Effects on Soil Microbes via PLFA Analysis
<p>Observations of microplastics in terrestrial soils are increasing and their potential effects on soil microbial communities (and/or their diversity) are poorly understood. To understand how microplastics may affect soil communities, we performed a microcosm study using soil collected from a …
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Understanding Soil Carbon Signatures from Hyperspectral Reflectance Data using Spectral Unmixing
Soil carbon stocks have been depleted mainly due to human activities, and there is a potential for soil carbon sequestration through regenerative agricultural practices, forest restoration, and similar interventions. The traditional laboratory treatments of soil samples provide ground-truth soil …
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Characterization of spatial distribution of soil organic carbon stocks in selected land use types and landscapes in Chama District
Soil Organic carbon (SOC) because of its influence on all aspects of soil fertility, is a useful indicator of soil health and the performance of mixed farms, and increasing SOC can improve productivity, stability and resilience of the soil. Thus the overall objective of the study was to …
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Characterization of spatial distribution of soil organic carbon stocks in selected land use types and landscapes in Chama District
Soil Organic carbon (SOC) because of its influence on all aspects of soil fertility, is a useful indicator of soil health and the performance of mixed farms, and increasing SOC can improve productivity, stability and resilience of the soil. Thus the overall objective of the study was to …
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Constraining natural and anthropogenic disturbances in the delivery of coastal ecosystem services
… relies on the accumulation and preservation of soil organic carbon (SOC). Firstly, I characterized SOC development and turnover in a New England salt marsh and found that salt marsh soils typically store marsh grass-derived compounds that are reworked over centuries-to-millennia. Next, I …
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Organic carbon and fertility of forest soils on the Allegheny Plateau of West Virginia
Soil series occurring above 1020 m in elevation in the Monongahela National Forest in West Virginia were sampled and analyzed for soil organic and soil microbial biomass carbon as well as various fertility parameters. Additionally, vegetative biomass estimates were made at the sampling sites. The …
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Quantifying soil particulate organic matter using image analysis
Rapid and cost-effective quantification of soil organic carbon (SOC) fractions that are responsive to management will improve soil health assessment and associated decision support tools. The particulate organic matter (POM) fraction of SOC is of interest due to its sensitivity to management and …
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Analysis of nature-based treatment of surface water runoff from an informal settlement to irrigate vegetables
… analysis of the physicochemistry of the soil, and nutrient concentration in crops following irrigation with biofiltration-treated surface runoff from IS. Municipal Treated Water (MTW) was used alongside Biofiltration-treated Water (BTW) to irrigate crops for nine months. Three soil …
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Constraining Natural and Anthropogenic Disturbances in the Delivery of Coastal Ecosystem Services
… relies on the accumulation and preservation of soil organic carbon (SOC). Firstly, I characterized SOC development and turnover in a New England salt marsh and found that salt marsh soils typically store marsh grass-derived compounds that are reworked over centuries-to-millennia. Next, I …
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Landscape and environmental controls on soil organic matter decomposability in the High Arctic
I employed 90 day-laboratory soil incubations, proximate carbon fraction analysis, diffuse reflectance infra-red Fourier transform spectroscopy (DRIFTS) and Near Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy to explore how variability in vegetation and soil moisture across the High …
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Growing crops for biofuel and forage while conserving soil and water
… the impacts of growing WSG on water storage, soil physical and hydraulic properties, soil organic carbon (SOC) dynamics, and water and wind erosion as compared with row crops, b) assess the impacts of growing WSG on biomass and forage production and quality and c) determine the most adaptable …
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Simulating the Impacts of Land-Use Land-Cover Changes on Cropland Carbon Fluxes in the Midwest of the United States
… the major drivers of the cropland carbon fluxes is important for carbon management and greenhouse gas mitigation in agriculture. Past studies found that agricultural land-use and land-cover (LULC) changes, such as changes in cropland production technologies, tillage practices, and …
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Utilizing Remotely Piloted Air Systems in the Delineation of Functional Land Management Zones
… medium through which food production occurs: the soil. Soil provides many of the ecosystem services provided by farmland and is essential for functions such as food production, water storage, carbon cycling and storage, functional and intrinsic biodiversity, as well as nutrient cycling. In order …
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Optimising carbon storage by land-management
… on climate change, recognising the importance of soil organic carbon (SOC), and its need for preservation. To establish if land-management could be optimised to increase carbon storage, ‘The Wallington Carbon Footprint Project’ was implemented. This study aimed to measure the Wallington Estate’s …
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Multifunctional woody polycultures and their influence on soil organic carbon
… (WP) polycultures on previously row-cropped soils and marginal lands could enhance a variety of ecosystem services including food production, habitat for biodiversity, and carbon (C) sequestration. Soil organic matter fractions (particulate organic matter [POM], and potentially mineralizable …
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Response of Soil Properties to 23-25 Years of Diverse Crop Rotations and Tillage Systems in South Dakota, USA
… and no-till (NT) are beneficial in improving soil organic carbon (SOC) and other soils properties. The present study was conducted to evaluate the interactions and impacts of long-term tillage and diverse crop rotation systems on soil quality indicators that include a range of soil chemical, …
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