2021-3-3 · Rapid soil organic carbon decomposition in river systems effects of the aquatic microbial community and hydrodynamical disturbance Man Zhao Liesbet Jacobs Steven Bouillon and Gerard Govers Department of Earth and Environmental Sciences KU Leuven 3001 Leuven Belgium Correspondence Man Zhao (man.zhao kuleuven )
2018-8-2 · The primary outcome of increasing salinity on carbon dynamics is a decrease in plant productivity and accordingly carbon inputs to the soil (Liu et al. 2017 ). High salinity also caused a decrease in microbial activity and consequently slower decomposition rates of dissolved organic carbon (DOC) (Setia et al. 2013 ).
2021-6-1 · Soil organic C (SOC) decomposition impacts on soil C dynamics and the net CO 2 exchange between the atmosphere and biosphere which have attracted increased attention in the context of global climate change (Riggs and Hobbie 2016 Xiao et al. 2019).
2020-8-17 · Most soil organic C (SOC) cycling research assumes that the rate of residue decomposition is largely controlled by N availability (Malhi Nyborg Goddard Puurveen 2011 Moretti et al. 2020). However fertilizer management is centered on the NPK strategy with the latter two nutrients rarely if at all considered in residue decomposition
2016-9-2 · The amount of organic carbon stored in soils worldwide is about 1600 gigatons (Gt) compared to 750 Gt in the atmosphere mostly in the form of CO 2 (Rustad et al. 2000). Thus if soil respiration increased slightly so that just 10 of the soil carbon pool was converted to CO 2 atmospheric CO 2 concentrations in the atmosphere could increase by
2020-5-8 · The temperature sensitivity (Q 10) of soil organic carbon (SOC) decomposition is an important parameter for those seeking accurate projections of SOC dynamics and its feedback on climate change in terrestrial ecosystems.However how Q 10 responds to N deposition across environmental gradients and the underlying mechanism remain largely unresolved. We conducted a novel incubation experiment
2011-10-6 · debates. Based on soil carbon stock and 14C data from across a latitudinal temperature gradient Liski et al. (1999) concluded that the decomposition rate of old soil carbon responds little to temperature. Analysis by A˚gren (2000) suggested that model construction influ-enced interpretation of observations though the likeli-
2020-11-12 · Understanding the soil organic matter (SOM) dynamics in forest ecosystems is important because soils are the largest pool of carbon (C) on Earth 6 7 . As a key ecological process responsible for the transfer of organic matter from vegetation to soil plant litter decomposition plays a critical role in global C cycling 8–10 .
2018-8-2 · The primary outcome of increasing salinity on carbon dynamics is a decrease in plant productivity and accordingly carbon inputs to the soil (Liu et al. 2017 ). High salinity also caused a decrease in microbial activity and consequently slower decomposition rates of dissolved organic carbon (DOC) (Setia et al. 2013 ).
REGULAR ARTICLE Priming of soil organic carbon decomposition induced by exogenous organic carbon input a meta-analysis Zhaolin Sun Shengen Liu Tianan Zhang
2011-10-6 · debates. Based on soil carbon stock and 14C data from across a latitudinal temperature gradient Liski et al. (1999) concluded that the decomposition rate of old soil carbon responds little to temperature. Analysis by A˚gren (2000) suggested that model construction influ-enced interpretation of observations though the likeli-
organic matter turnover rates under humid tropical conditions. INTRODUCTION The transformation of soil organic matter (SOM) during decomposition and stabilization of organic carbon in the long-term soil carbon pool is of increasing interest with regard to issues of CO 2 uptake and carbon
2019-6-1 · Inconsistent responses of soil organic carbon (SOC) decomposition to climate warming have been observed in field experiments. Responses vary with the duration of experimental warming however even the longest warming experiment could not account for possible future climate-driven changes in SOC decomposition.
2020-10-17 · The δ 15 N was significantly enriched in soil organic matter at all depths than in the living plant tissues indicating a preferential decomposition of 14 N-enriched organic components. Thus the kinetic isotope fractionation during microbial degradation and the preferential substrate utilization are the dominant mechanisms in regulating
SOIL FERTILITY PLANT NUTRITION Residue decomposition and priming of soil organic carbon following different NPK fertilizer histories Mengyang You1 2 Lu-Jun Li1 2 Qing Tian3 Peng He1 Guiping He1 3 Xiang-Xiang Hao1 William R. Horwath1 4 1 National Field Observation and Research Station of Hailun Agroecosystems Key Laboratory of Mollisols
2006-3-9 · While CO 2 is the main product of decomposition in soil CH 4 dissolved organic carbon (DOC) particulate organic carbon (POC) in water and dissolved inorganic carbon (DIC) are
2016-11-25 · Understanding the effects of temperature and moisture on soil organic carbon (SOC) dynamics is crucial to predict the cycling of C in terrestrial ecosystems under a changing climate. For single rice cropping system there are two contrasting phases of SOC decomposition in rice paddy soils mineralization under aerobic conditions during the off-rice season and fermentation under anaerobic
2017-7-12 · The turnover of soil organic carbon (SOC) in cropland plays an important role in terrestrial carbon cycling but little is known about the temperature sensitivity (Q 10) of SOC decomposition below
2019-8-8 · Priming effect (PE) of soil organic carbon (SOC) decomposition induced by exogenous organic C is an important ecological process in regulating the soil C cycle. The objective of this study was to evaluate how the PE varied among different ecosystems at the global scale and explore factors that drive the direction and magnitude of the PE.
2017-4-21 · Soil organic matter (SOM) stocks contain nearly three times as much carbon (C) as the atmosphere and changes in soil C stocks may have a major impact on future atmospheric carbon
Rapid warming of Arctic ecosystems exposes soil organic matter (SOM) to accelerated microbial decomposition potentially leading to increased emissions of carbon dioxide (CO 2) and methane (CH 4) that have a positive feedback on global warming.Current estimates of the magnitude and form of carbon emissions from Earth system models include significant uncertainties partially due to the
2020-10-17 · The δ 15 N was significantly enriched in soil organic matter at all depths than in the living plant tissues indicating a preferential decomposition of 14 N-enriched organic components. Thus the kinetic isotope fractionation during microbial degradation and the preferential substrate utilization are the dominant mechanisms in regulating
2020-5-8 · The temperature sensitivity (Q 10) of soil organic carbon (SOC) decomposition is an important parameter for those seeking accurate projections of SOC dynamics and its feedback on climate change in terrestrial ecosystems.However how Q 10 responds to N deposition across environmental gradients and the underlying mechanism remain largely unresolved. We conducted a novel incubation experiment
2015-10-1 · The decomposition of soil organic carbon (SOC) is intrinsically sensitive to temperature. However the degree to which the temperature sensitivity of SOC decomposition (as often measured in Q 10 value) varies with soil depth and labile substrate availability remain unclear. This study explores (1) how the Q 10 of SOC decomposition changes with increasing soil depth and (2) how increasing
2016-9-2 · Since decomposition is an enzyme-mediated biological process carried out by bacteria and fungi it is very sensitive to temperature. In most soils the decomposition rate peaks at about 25°C and declines as temperature varies from this maximum. Soil moisture also affects the
2011-10-6 · debates. Based on soil carbon stock and 14C data from across a latitudinal temperature gradient Liski et al. (1999) concluded that the decomposition rate of old soil carbon responds little to temperature. Analysis by A˚gren (2000) suggested that model construction influ-enced interpretation of observations though the likeli-
2020-9-30 · Soil moisture remarkably influences soil organic carbon (SOC) decomposition and is one of the key variables in ecological models influencing changes in soil carbon (C) storage. However the mechanisms determining the impact of soil moisture on SOC decomposition in coastal wetlands are poorly understood. We collected and incubated soil samples from a coastal wetland of the Yellow
2011-10-6 · debates. Based on soil carbon stock and 14C data from across a latitudinal temperature gradient Liski et al. (1999) concluded that the decomposition rate of old soil carbon responds little to temperature. Analysis by A˚gren (2000) suggested that model construction influ-enced interpretation of observations though the likeli-
2021-3-3 · Rapid soil organic carbon decomposition in river systems effects of the aquatic microbial community and hydrodynamical disturbance Man Zhao Liesbet Jacobs Steven Bouillon and Gerard Govers Department of Earth and Environmental Sciences KU Leuven 3001 Leuven Belgium Correspondence Man Zhao (man.zhao kuleuven )
2016-11-25 · Understanding the effects of temperature and moisture on soil organic carbon (SOC) dynamics is crucial to predict the cycling of C in terrestrial ecosystems under a changing climate. For single rice cropping system there are two contrasting phases of SOC decomposition in rice paddy soils mineralization under aerobic conditions during the off-rice season and fermentation under anaerobic
2017-4-21 · Soil organic matter (SOM) stocks contain nearly three times as much carbon (C) as the atmosphere and changes in soil C stocks may have a major impact on future atmospheric carbon
2014-8-1 · Soil organic carbon (C S) is a major component of the global carbon (C) cycle that influences productivity in terrestrial ecosystems its accumulation can reduce the buildup of CO 2 in the atmosphere ( and Black 1994 Lal 1997 Reeves 1997 Berthrong et al. 2009). Carbon stocks and fluxes are strongly affected by land use.
2019-8-8 · Priming effect (PE) of soil organic carbon (SOC) decomposition induced by exogenous organic C is an important ecological process in regulating the soil C cycle. The objective of this study was to evaluate how the PE varied among different ecosystems at the global scale and explore factors that drive the direction and magnitude of the PE. Using 2048 experimental comparisons compiled from 94
2020-8-12 · The lability of soil organic carbon varied with sediment grain size as much as 80 of the C org was refractory in coarse-grained soils compared with less than 30 in muddy soils. In muddy soils burial decreased cellulose decomposition rate by an average of 22–39 compared with surficial breakdown but in coarse-grained soils burial
2011-10-6 · debates. Based on soil carbon stock and 14C data from across a latitudinal temperature gradient Liski et al. (1999) concluded that the decomposition rate of old soil carbon responds little to temperature. Analysis by A˚gren (2000) suggested that model construction influ-enced interpretation of observations though the likeli-
2020-8-12 · The lability of soil organic carbon varied with sediment grain size as much as 80 of the C org was refractory in coarse-grained soils compared with less than 30 in muddy soils. In muddy soils burial decreased cellulose decomposition rate by an average of 22–39 compared with surficial breakdown but in coarse-grained soils burial
2020-9-29 · Soil stores large quantities of organic carbon (C) about three times more C than the Earth s atmosphere 1 2.Soil respiration is the largest single source of carbon dioxide (CO 2) from
organic matter turnover rates under humid tropical conditions. INTRODUCTION The transformation of soil organic matter (SOM) during decomposition and stabilization of organic carbon in the long-term soil carbon pool is of increasing interest with regard to issues of CO 2 uptake and carbon
2021-3-3 · Rapid soil organic carbon decomposition in river systems effects of the aquatic microbial community and hydrodynamical disturbance Man Zhao Liesbet Jacobs Steven Bouillon and Gerard Govers Department of Earth and Environmental Sciences KU Leuven 3001 Leuven Belgium Correspondence Man Zhao (man.zhao kuleuven )
2016-9-2 · The amount of organic carbon stored in soils worldwide is about 1600 gigatons (Gt) compared to 750 Gt in the atmosphere mostly in the form of CO 2 (Rustad et al. 2000). Thus if soil respiration increased slightly so that just 10 of the soil carbon pool was converted to CO 2 atmospheric CO 2 concentrations in the atmosphere could increase by
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