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
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
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.
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
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
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 )
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-
2017-6-9 · Quantifying soil organic carbon (SOC) decomposition under warming is critical to predict carbon–climate feedbacks. According to the substrate regulating principle SOC decomposition would decrease as labile SOC declines under field warming but observations of SOC decomposition under warming do not always support this prediction.
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
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
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. Using 2048 experimental comparisons compiled from 94
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
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
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.
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
2020-8-12 · 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
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 ).
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 .
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.
2016-4-22 · Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidification and root exudation. Xiaojuan Wang Department of Animal Plant and Soil Sciences Centre for AgriBioscience La Trobe University
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
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
2016-4-22 · Introduction. In decomposition studies a priming effect is defined as a strong short-term change in microbial mineralization of soil organic carbon (SOC) in response to labile carbon (C) inputs (Kuzyakov et al. 2000).When the source of labile organic C is rhizodeposits derived from living roots and a change in decomposition of SOC in the direct vicinity of roots is induced it is termed a
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
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
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
2016-1-15 · Decomposition of soil organic matter (SOM) plays an essential role in terrestrial carbon (C) cycling (Trumbore 1997 Knoblauch et al. 2013 Wang et al. 2013). It facilitates the growth and life of the soil biota by providing energy from C compounds and nutrients in inorganic forms.
2016-7-7 · Soil organic carbon stocks in the semi-arid regions are highly vulnerable to decomposition due to prevailing environmental conditions (Sandeep and Manjaiah 2014). Proper evaluation of the thermal response of SOC decomposition processes is essential to predict the fate of carbon stocks in these regions (Kirschbaum 1995 ).
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
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
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 ).
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
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
REGULAR ARTICLE Priming of soil organic carbon decomposition induced by exogenous organic carbon input a meta-analysis Zhaolin Sun Shengen Liu Tianan Zhang
2016-4-22 · Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidification and root exudation. Xiaojuan Wang Department of Animal Plant and Soil Sciences Centre for AgriBioscience La Trobe University
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-
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-
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