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 37 for “"C sequestration"”.
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Mechanisms and management for soil carbon sequestration
… can all come into play when determining the sequestration potential of a specific ecosystem. Additionally, not all soil C is equal in its turnover time or in its ability to resist disturbance. Therefore it is crucial that we better understand how functionally different soil C pools form and …
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Evaluating soil productivity and climate change benefits of woody biochar soil amendments for the US Interior West
… emissions from fertilizer use and carbon (C) sequestration. This dissertation evaluates such claims for woody biochar applications within the US Interior West; to enhance crop production and reduce N2O emissions in deficit irrigation agricultural systems, and to support forest road restoration …
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Properties and Potentials of Coal Mine Soils in Southwest Virginia 29 Years After Establishment
… Virginia, to estimate long-term mine soil C sequestration potentials and nutrient capitals after different reclamation strategies. The COPE includes two studies, a rock mix study (RM) comparing topsoil substitutes created from different ratios of local overburden [pure sandstone (SS), pure …
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Evaluating the interactions of crop management, carbon cycling, and climate using Earth system modeling and remote sensing
… practices may alter C cycles through increased sequestration of soil C in agricultural soils. Despite their potential importance, regional to global scale data are lacking for many crop management practices, and few studies have evaluated the potential impact of the full range of crop management …
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Tillage Effects on Soil Organic Carbon Sequestration: Carbon Inputs and Physical Protection
… and physical protection by aggregates on C sequestration. Simulated results were compared against actual C contents; both showed that after a decade of NT practice adoption, C input patterns and soil aggregation could explain SOC contents that were increased at the surface and decreased in …
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Interactive effects of climate change and management on grassland greenhouse gas emissions
… to its role in global food security and soil C sequestration. The interaction between climate warming and grassland management is highly important and needs to be addressed as it may change the direction and strength of the effects on GHG emissions by changing plant productivity (either above …
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Quantification and Physiology of Carbon Dynamics in Intensively Managed Loblolly Pine (Pinus taeda L.)
… management alters C dynamics, affecting the C sequestration capacity of a site. Identifying drivers that influence C cycling, quantifying C fluxes, and determining how management alters processes involved in C cycling will allow for an understanding of C sequestration capacity in managed …
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Modeling the effects of forest management on the carbon cycle in a loblolly pine (Pinus taeda) plantation
… the impact of global warming through carbon sequestration. Six forest management scenarios for a 27,000 acre study area are modeled to determine the impact of forest management on carbon sequestration. Forest management determines annual harvested volume and end-use disposition category of …
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Áhrif nýskógræktar á kolefnisbindingu í jarðvegi á Íslandi
… respectively, and the observed average annual sequestration rates of SOC were 84.2 and 64.2 g C m-2 yr-1, respectively. The changes in ground vegetation C-stock amounted to –3.5 and 1.3 g C m-2 yr-1, respectively. My results indicate that “general C-sequestration rate constants” should be …
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Effects of Biosolids on Carbon Sequestration and Nitrogen Cycling
… in soils, but the effects of biosolids on C sequestration and N cycling in the Mid-Atlantic region is not well understood. The objectives were: 1) to investigate soil C sequestration at sites with a long-term history of biosolids either in repeated application or single large application; 2) …
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Consequences of nutrient enrichment for soil organic matter cycling in grasslands
… positive or negative changes to grassland soil C sequestration could feed back to influence the global C cycle. Unfortunately, the effects of nutrient enrichment on SOM cycling remain uncertain. In my dissertation, I examined the effects of nutrient addition on SOM cycling at participatory sites …
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Grape marc biochar as a soil amendment: Potential for improving soil fertility, vine nutrition, and carbon sequestration: A thesis submitted in partial fulfilment of the requirements for the Degree of Master of Science at Lincoln University
… vine performance, and increase soil carbon sequestration in vineyard systems. The effects of pyrolysed grape marc biochar (GM-BC) on soil properties and grape vine nutrition were examined through a combination of laboratory incubation and a greenhouse pot trial, using two contrasting soils: …
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Soil Carbon and Nitrogen Dynamics Across the Hillslope-Riparian Interface in Adjacent Watersheds with Contrasting Cellulosic Biofuel Systems
… reduce greenhouse gas emissions via carbon (C) sequestration and by reducing demand for fossil fuel production. The objective of this study was to investigate how land use change affects soil properties and selected soil C and nitrogen (N) dynamics among alternative cellulosic biofuel treatments …
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Effects of Biochar Application on Soil Fertility and Pearl Millet (Pennisetum glaucum L.) Yield
… warming by increasing long-term soil carbon (C) sequestration and to enhance soil fertility and crop productivity. The objective of this study was to evaluate the effects of a single biochar application from peanut shell (Arachis hypogea L.) and mixed pine (Pinus spp.) wood to a Typic Hapludults …
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Long-Term Effects of Rock Type, Weathering and Amendments on Southwest Virginia Mine Soils
… total N increased in all treatments. Annual C-sequestration rates were 0.51 Mg ha⁻¹ for 1:1 SS:SiS and 0.32 Mg ha⁻¹ for SiS. In the SA experiment, extractable P and exchangeable cations increased over time in organically amended plots. The CON and TS sequestered C at 0.54 Mg ha⁻¹ and 0.87 Mg …
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Transformation of Carbon, Nitrogen and Phosphorus in Deep Row Biosolids Incorporation-Hybrid Poplar Plantation in Coastal Plain Mined Land Reclamation Sites
… gases N₂O and CH₄ and decrease the value of C sequestration. Objectives of this research were: (i) compare the effects of DRI biosolids type and rate and annual conventional fertilizer application on N and P leaching losses; (ii) determine the effects of aging on the N, C and P dynamics in the …
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Environmental Impact of Pasture-Based Milk Production in Integrated Crop-Livestock Systems
… over two years. Results confirmed the soil C sequestration potential of grass-clover (GC) leys and demonstrated how management influences C dynamics, highlighting ICLSs' potential to enhance soil C retention while reducing net CO₂ emissions. The third objective examined how cultivation timing …
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Multifunctional woody polycultures and their influence on soil organic carbon
… habitat for biodiversity, and carbon (C) sequestration. Soil organic matter fractions (particulate organic matter [POM], and potentially mineralizable N [PMN]), inherent soil and landscape factors were quantified on samples collected using plot- and grid-based approaches to understand …
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Carbon and nitrogen cycling in watersheds of contrasting vegetation types in the Fernow Experimental Forest, West Virginia
… health, productivity, and carbon (C) and N sequestration of conifer and hardwood forest types by examining the mechanisms controlling N cycling and NO3-N production in two watersheds with contrasting vegetation at the Fernow Experimental Forest (FEF), West Virginia. I utilized watershed C …
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Continuous No-till Management: Implications for Soil Quality, Carbon Sequestration, and Nitrogen Conservation
… of this research were to: i) quantify C sequestration rate and N conservation with duration of continuous no-till; ii) measure C stratification with continuous no-till as an indicator of soil quality; and iii) evaluate the Illinois soil N test (ISNT) for its value to predict fertilizer N …
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