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... watershed, Thailand, which is also the main source of environmental deterioration [3]. Soil loss creates negative impacts on agricultural production [4] of crops such as corn and soybeans, infrastructure and water quality. The potential causes of increased soil erosion could be increased temperature ...
... watershed, Thailand, which is also the main source of environmental deterioration [3]. Soil loss creates negative impacts on agricultural production [4] of crops such as corn and soybeans, infrastructure and water quality. The potential causes of increased soil erosion could be increased temperature ...
The role of abiotic factors modulating the plant-microbe
... whose origin is derived from the mixture of minerals, gases, liquids, organic matter, and living organisms that sustain plant growth (Bronick & Lal, 2005). The main mineral constituents of the soil are sand, silt, and clay. The specific mineral composition defines the soil type, because the mineral ...
... whose origin is derived from the mixture of minerals, gases, liquids, organic matter, and living organisms that sustain plant growth (Bronick & Lal, 2005). The main mineral constituents of the soil are sand, silt, and clay. The specific mineral composition defines the soil type, because the mineral ...
Climate Investigations Using Ice Sheet and Mass Balance Models
... Code changes that I made to the ice sheet model spurred the development of a secondary program through which new input bedrock topography and climatology grids for the UMISM could be generated. Around the same time, my dissertation funding source shifted to a National Science Foundation ITEST grant ...
... Code changes that I made to the ice sheet model spurred the development of a secondary program through which new input bedrock topography and climatology grids for the UMISM could be generated. Around the same time, my dissertation funding source shifted to a National Science Foundation ITEST grant ...
Quasi-100 ky glacial-interglacial cycles triggered by - HAL-Insu
... these estimates, but the number 500 GtC (1 GtC is 1 gigaton or 1 petagram or 1015 g of carbon; hereafter Gt in accord with paleoclimate tradition) has established itself in the literature, corresponding to a 0.35‰ lower mean glacial ocean δ 13 C (Curry et al., 1988; Duplessy et al., 1988). Thus the ...
... these estimates, but the number 500 GtC (1 GtC is 1 gigaton or 1 petagram or 1015 g of carbon; hereafter Gt in accord with paleoclimate tradition) has established itself in the literature, corresponding to a 0.35‰ lower mean glacial ocean δ 13 C (Curry et al., 1988; Duplessy et al., 1988). Thus the ...
"Biochar: A Carbon-Negative Technology to Combat Climate Change an Enhance Global Soil Resources"
... • CO2 is captured by photosynthesis, and fixed into biomass • Biomass decays into CO2 BIOCHAR halts the decay process, and captures the CO2 in a virtually permanent carbon stock, preventing re-release to the atmosphere. • IT IS A CARBON-NEGATIVE PROCESS. • BURY IT!! As a soil amendment, biochar ...
... • CO2 is captured by photosynthesis, and fixed into biomass • Biomass decays into CO2 BIOCHAR halts the decay process, and captures the CO2 in a virtually permanent carbon stock, preventing re-release to the atmosphere. • IT IS A CARBON-NEGATIVE PROCESS. • BURY IT!! As a soil amendment, biochar ...
Ice Age DA - GDI - 2011
... Contrary to the conventional wisdom of the day, the real danger facing humanity is not global warming, but more likely the coming of a new Ice Age. What we live in now is known as an interglacial, a relatively brief period between long ice ages. Unfortunately for us, most interglacial periods last o ...
... Contrary to the conventional wisdom of the day, the real danger facing humanity is not global warming, but more likely the coming of a new Ice Age. What we live in now is known as an interglacial, a relatively brief period between long ice ages. Unfortunately for us, most interglacial periods last o ...
Boreal forest soil carbon: distribution, function and modelling
... Increasing accumulation of CO2 in the atmosphere has led to calls for terrestrial mechanisms for CO2 abatement and given that soils represent the largest terrestrial body of C on Earth, there is a great deal of interest in soils as a sink for atmospheric C. This emphasis on sequestration in boreal f ...
... Increasing accumulation of CO2 in the atmosphere has led to calls for terrestrial mechanisms for CO2 abatement and given that soils represent the largest terrestrial body of C on Earth, there is a great deal of interest in soils as a sink for atmospheric C. This emphasis on sequestration in boreal f ...
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... A major concern with climate change in boreal regions is that rising temperatures will increase the metabolic rates of decomposer microbes, thereby mobilizing the large C stocks in boreal soils (McGuire et al. 2009). Temperature manipulations in boreal systems can provide information about the direc ...
... A major concern with climate change in boreal regions is that rising temperatures will increase the metabolic rates of decomposer microbes, thereby mobilizing the large C stocks in boreal soils (McGuire et al. 2009). Temperature manipulations in boreal systems can provide information about the direc ...
A daily soil temperature model based on air temperature and
... estimate daily mean soil temperature at a depth of 10 cm using linear regression. This model was tested using data from 6 climate r e g ~ o n sacross the United States. Frequency analyses for 17 of 19 data sets showed that the number of days which were w~thina k3.5OC range centered on the measured s ...
... estimate daily mean soil temperature at a depth of 10 cm using linear regression. This model was tested using data from 6 climate r e g ~ o n sacross the United States. Frequency analyses for 17 of 19 data sets showed that the number of days which were w~thina k3.5OC range centered on the measured s ...
Boreal forest soil carbon: distribution, function
... Increasing accumulation of CO2 in the atmosphere has led to calls for terrestrial mechanisms for CO2 abatement and given that soils represent the largest terrestrial body of C on Earth, there is a great deal of interest in soils as a sink for atmospheric C. This emphasis on sequestration in boreal f ...
... Increasing accumulation of CO2 in the atmosphere has led to calls for terrestrial mechanisms for CO2 abatement and given that soils represent the largest terrestrial body of C on Earth, there is a great deal of interest in soils as a sink for atmospheric C. This emphasis on sequestration in boreal f ...
Land degradation in drylands: Interactions among
... intense winds occur in a dry season, whereas water erosion is thought to be dominant in more humid environments (Marshall, 1973; Kirkby, 1978; Bullard and Livingstone, 2002; Field et al., 2009; Fig. 3). Water erosion is directly related to the hydrological cycle, in that processes such as rainsplash ...
... intense winds occur in a dry season, whereas water erosion is thought to be dominant in more humid environments (Marshall, 1973; Kirkby, 1978; Bullard and Livingstone, 2002; Field et al., 2009; Fig. 3). Water erosion is directly related to the hydrological cycle, in that processes such as rainsplash ...
Climate change amplifies gross nitrogen turnover in montane
... initial levels and extent of reduction, either result in promotion of N mineralization or nitrification due to increased soil oxygen availability or may impair soil microbial activity due to water stress (Emmett et al., 2004; Schmidt et al., 2004; Dannenmann et al., 2009). Several ecosystem manipula ...
... initial levels and extent of reduction, either result in promotion of N mineralization or nitrification due to increased soil oxygen availability or may impair soil microbial activity due to water stress (Emmett et al., 2004; Schmidt et al., 2004; Dannenmann et al., 2009). Several ecosystem manipula ...
Contrasting responses of heterotrophic and autotrophic respiration
... of Rs may involve increase of Rh. A positive feedback of soil C cycle to climate warming may be triggered if (i) Rh increases without corresponding increases in detritus inputs or even decrease in detritus inputs; (ii) Rh does not change but detritus inputs decrease. Since it is the difference betwe ...
... of Rs may involve increase of Rh. A positive feedback of soil C cycle to climate warming may be triggered if (i) Rh increases without corresponding increases in detritus inputs or even decrease in detritus inputs; (ii) Rh does not change but detritus inputs decrease. Since it is the difference betwe ...
The impacts of climate change on soil functions
... artefacts, although drier summer conditions would improve reconnaissance activities for archaeology. Increased flooding and more intense rainfall events will enhance soil erosion. An additional risk on brownfield land is the erosion of contaminated soil materials, potentially leading to the pollutio ...
... artefacts, although drier summer conditions would improve reconnaissance activities for archaeology. Increased flooding and more intense rainfall events will enhance soil erosion. An additional risk on brownfield land is the erosion of contaminated soil materials, potentially leading to the pollutio ...
An assessment of the carbon stocks and sodicity tolerance of
... Background: In the lower Mekong Basin and coastal zones of Southern Vietnam, forests dominated by the genus Melaleuca have two notable features: most have been substantially disturbed by human activity and can now be considered as degraded forests; and most are subject to acute pressures from clima ...
... Background: In the lower Mekong Basin and coastal zones of Southern Vietnam, forests dominated by the genus Melaleuca have two notable features: most have been substantially disturbed by human activity and can now be considered as degraded forests; and most are subject to acute pressures from clima ...
Obliquity pacing of the late Pleistocene glacial terminations
... promotes basal melting. Enhanced lubrication of the ice-bedrock interface may trigger deglaciation by increasing ice-flux into the ocean or toward lower latitudes, as well as by increasing the thinning rate and causing inward migration of the ablation zone20 . Note that ∼10ky is required for surface ...
... promotes basal melting. Enhanced lubrication of the ice-bedrock interface may trigger deglaciation by increasing ice-flux into the ocean or toward lower latitudes, as well as by increasing the thinning rate and causing inward migration of the ablation zone20 . Note that ∼10ky is required for surface ...
New perspectives on Beringian Quaternary paleogeography
... glacial maximum (LGM) has been the focus of much research over the past 30 yr with controversial issues arising only over the past decade. Ignoring years of "eld research Grosswald and Hughes have published a series of papers suggesting that an East Siberian Sea ice sheet covered most of central and ...
... glacial maximum (LGM) has been the focus of much research over the past 30 yr with controversial issues arising only over the past decade. Ignoring years of "eld research Grosswald and Hughes have published a series of papers suggesting that an East Siberian Sea ice sheet covered most of central and ...
Soil carbon sequestration to mitigate climate change
... warming rate of 0.17 jC/decade (IPCC, 2001). The observed rate of increase of the global mean temperature is in excess of the critical rate of 0.1 jC/decade beyond which the ecosystems cannot adjust. Consequently, land-surface precipitation continues to increase at the rate of 0.5– 1%/decade in much ...
... warming rate of 0.17 jC/decade (IPCC, 2001). The observed rate of increase of the global mean temperature is in excess of the critical rate of 0.1 jC/decade beyond which the ecosystems cannot adjust. Consequently, land-surface precipitation continues to increase at the rate of 0.5– 1%/decade in much ...
Forest soil carbon sink in the Nordic region
... significant reductions in SOC after whole‐tree harvesting compared with stem‐only harvesting, while others showed no difference (Fig. 2). The differences tended to be less with increased time since harvest, but the studies were few. Better reestablishment, enhanced ground flora (gaining C) or indi ...
... significant reductions in SOC after whole‐tree harvesting compared with stem‐only harvesting, while others showed no difference (Fig. 2). The differences tended to be less with increased time since harvest, but the studies were few. Better reestablishment, enhanced ground flora (gaining C) or indi ...
Soil organic carbon pools in the northern circumpolar permafrost
... determine carbon pools in soils of the northern circumpolar permafrost region. The area of all soils in the northern permafrost region is approximately 18,782 103 km2, or approximately 16% of the global soil area. In the northern permafrost region, organic soils (peatlands) and cryoturbated permaf ...
... determine carbon pools in soils of the northern circumpolar permafrost region. The area of all soils in the northern permafrost region is approximately 18,782 103 km2, or approximately 16% of the global soil area. In the northern permafrost region, organic soils (peatlands) and cryoturbated permaf ...
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... the soil microbial biomass. Ideally, MGE is determined during a very short period after the addition of 13 C-labelled C compounds (instantaneous MGE or MGEI ). Over time, microbial turnover will cause some of the 13 C initially incorporated into microbial biomass to be released as CO2 , resulting in ...
... the soil microbial biomass. Ideally, MGE is determined during a very short period after the addition of 13 C-labelled C compounds (instantaneous MGE or MGEI ). Over time, microbial turnover will cause some of the 13 C initially incorporated into microbial biomass to be released as CO2 , resulting in ...
Soil temperature response to 21st century global warming: the role
... Soil temperatures are not only influenced by air temperatures but also by the presence or absence of an insulating layer of snow on the surface (Sturm et al., 1997). The response of soil temperatures to changes in air temperature strongly depends on the temporal distribution, depth, and density of t ...
... Soil temperatures are not only influenced by air temperatures but also by the presence or absence of an insulating layer of snow on the surface (Sturm et al., 1997). The response of soil temperatures to changes in air temperature strongly depends on the temporal distribution, depth, and density of t ...
Enhanced weathering strategies for stabilizing climate and averting
... Chemical breakdown of rocks, weathering, is an important but very slow part of the carbon cycle that ultimately leads to CO2 being locked up in carbonates on the ocean floor. Artificial acceleration of this carbon sink via distribution of pulverized silicate rocks across terrestrial landscapes may h ...
... Chemical breakdown of rocks, weathering, is an important but very slow part of the carbon cycle that ultimately leads to CO2 being locked up in carbonates on the ocean floor. Artificial acceleration of this carbon sink via distribution of pulverized silicate rocks across terrestrial landscapes may h ...
Teacher`s Guide For Glaciers
... ice, permafrost, glaciers and snow. At the same time it discusses the different ice ages that have occurred in Earth’s history. Chapter three discusses how glaciers form and how they move. How mountain glaciers form and their role in reshaping mountains are described in chapter four. Chapter five de ...
... ice, permafrost, glaciers and snow. At the same time it discusses the different ice ages that have occurred in Earth’s history. Chapter three discusses how glaciers form and how they move. How mountain glaciers form and their role in reshaping mountains are described in chapter four. Chapter five de ...
Sustainable Agriculture Land Management Practices for Climate
... • Climate change may have a significant impact on many economic sectors, including the agriculture ...
... • Climate change may have a significant impact on many economic sectors, including the agriculture ...