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Showing 1 to 20 of 199 for “"soil carbon"”.
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Soil carbon dynamics in the upper Mersey estuarine floodplain, northwest England : implications for soil carbon sequestration
There have been several studies on soil carbon dynamics in estuarine floodplains. However, little attempt has been made to examine the effects of heavy metal contamination on these processes. This represents a knowledge gap that needs to be filled to understand better soil carbon decomposition in …
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Mechanisms and management for soil carbon sequestration
Soil organic matter (SOM) holds more carbon (C) than the atmosphere and terrestrial aboveground biomass combined. SOM also provides many other co-benefits in the form of ecosystem services. The rate at which we lose or sequester more C in soils is of great importance for mitigating the rising …
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An interdisciplinary approach to mapping soil carbon
At the global scale, soils are the primary terrestrial reservoir of carbon and therefore have a major influence on the concentration of carbon dioxide in the atmosphere. Soil organic carbon stocks are estimated to have decreased by an average of fifty two percent in temperate regions since 1850. …
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Controls on soil carbon accrual in restored perennial grasslands.
Controls on soil carbon accrual in restored perennial grasslands.
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Soil Carbon Assessment: Confronting Climate Change on the Farm
… emissions in order to stabilize atmospheric carbon dioxide concentrations and prevent catastrophic changes in climate. Soil carbon sequestration on arable lands is a negative emissions technology with high climate change mitigation potential that also confers agronomic co-benefits, but …
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Soil carbon and nitrogen cycle modeling for bioenergy crops
… on the effect of the expansion of these crops on soil carbon and nitrogen dynamics is integral to understanding their long-term environmental impacts. We developed a coupled hydrological-soil nutrient model under identical field conditions and different harvest litter input scenarios. Our project …
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Vegetation and microbial determinants of soil carbon isotopic composition
Typically, soil δ¹³C and δ¹⁵N values tend to increase with depth across a wide range of ecosystems. Changes in δ¹³C with depth have been attributed to vegetation changes (i.e. C₃/C₄ shifts), but the similarity in δ¹³C and δ¹⁵N profiles suggest that microbial decomposition may play an important …
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Tradeoffs Between Aboveground and Soil Carbon Accumulation Following Forestation
… planting, as trees sequester large amounts of carbon in their aboveground biomass. However, there is emerging evidence that under some conditions, soil carbon decreases following forestation, offsetting the carbon accumulated aboveground and rendering carbon sequestration efforts ineffective. …
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Comparison of Techniques for Estimation of Forest Soil Carbon
Soil organic carbon represents the largest constituent of the global C pool and carbon budgets are studied by researchers and modelers in C cycling, global climate change, and soil quality studies. Pedon and soil interpretation record databases are used with soil and ecological maps to estimate …
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Seasonal soil carbon fluxes in transitioning agricultural soils in Central Washington State: Relations to land-use, environmental factors and soil carbon-nitrogen characteristics
… agricultural land-use practices to increase soil carbon sequestration contributes to climate change mitigation and improved food security by moving CO<sub>2</sub> from the atmosphere into soil as soil organic carbon (SOC). In 2016, a farm in Thorp, Washington, Spoon Full Farm, began …
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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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The quantification and characterization of soil carbon pools in biofuel agriculture.
… land management practices that improve soil health and a deeper understanding of mechanisms involved in terrestrial carbon cycling. Agricultural land management strategies such as fertilization, tillage, and crop selection affect soil organic carbon (SOC) storage through the quantity and …
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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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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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Soil Carbon Dynamics in Lawns Converted From Appalachian Mixed Oak Stands
… results in dramatic changes to vegetation and soils, which may affect soil carbon storage. To better understand the effects of landscape conversion and management on soil carbon, we conducted a study on residential properties in the Valley and Ridge physiographic province of southwest Virginia …
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Studies of genera cytophaga-flavobacterium in context of the soil carbon cycle
There is a great need to understand the global carbon cycle; with specific interest in the cycling of soil carbon. This need is two-fold and interconnected. The global climate change is in-part due to the loss of soil organic carbon and the reduced ability of soils to sequester carbon. Also, to …
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COMPARING LONG-TERM SOIL CARBON CONTENT AND THERMAL STABILITY AMONG DIFFERENT AGRICULTURAL SYSTEMS
Soil carbon stability is vital for maintaining the global carbon cycle balance, biodiversity conservation, and sustainable agriculture. While the earth’s climate is experiencing unprecedented changes in recent years and will be more unpredictable in the future, it is urgent to determine the factors …
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Soil Carbon and Nutrient Cycling Across Cover Types in Southern Appalachian Hardwood Forests
… province were used to determine fine scale soil respiration (Rs ) and nutrient dynamics among four distinct cover types, white oak (WO, Quercus alba L.), scarlet oak (SO, Quercus coccinea Muech.), chestnut oak (CO, Quercus montana Wild.) and a pine-oak co-dominant cover (PO, Pinus spp. and …
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Causes and consequences of soil carbon mobilization and lake brownification in northern forested landscapes
… leading to the faster destabilization of forest soil carbon and its mobilization as dissolved organic matter and causing the brownification of lakes. This thesis investigated the causes of soil carbon destabilization and consequences of the mobilized soil carbon to lake food webs. The first …
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Stover, tillage, and nitrogen management in continuous corn for grain, ethanol, and soil carbon
… on crop growth and productivity as well as soil quality. Previous research has generally occurred in environments different than those found in the Upper Midwest, meaning application of those conclusions to the Upper Midwest may not be appropriate. This research is unique because it was …
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