Mean residence time of global topsoil organic carbon depends on temperature, precipitation and soil nitrogen

doi:10.1016/j.gloplacha.2012.10.006

	Mean residence time of global topsoil organic carbon depends on temperature, precipitation and soil nitrogen
	Chen, Shutao ; Huang, Yao1 ; Zou, Jianwen 2; Shi, Yanshu
	2013
发表期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
卷号	100 页码:99-108
摘要	Mean residence time (MRT) of topsoil organic carbon is one critical parameter for predicting future land carbon sink dynamics. Large uncertainties remain about controls on the variability in global MRT of soil organic carbon. We estimated global MRT of topsoil (0-20 cm) organic carbon in terrestrial ecosystems and found that mean annual air temperature, annual precipitation, and topsoil nitrogen storage were responsible for the variability in MRT. An empirical climate and soil nitrogen-based (Clim&SN) model could be used to explain the temporal and spatial variability in MRT across various ecosystems. Estimated MRT was lowest in the low-latitude zones, and increased toward high-latitude zones. Global MRT of topsoil organic carbon showed a significant declining tendency between 1960 and 2008, particularly in the high-latitude zone of the northern hemisphere. The largest absolute and relative changes (0.2% per yr) in MRT of topsoil organic carbon from 1960 to 2008 occurred in high-latitude regions, consistent with large carbon stocks in, and greater degree of climate change being experienced by, these areas. Overall, global MRT anomalies (differences between MRT in each year and averaged value of MRT from 1960 to 2008) of terrestrial topsoil organic carbon were decreasing from 1960 to 2008. Global MRT anomalies decreased significantly (P<0.001) with the increase of global temperature anomalies, indicating that global warming resulted in faster turnover rates of topsoil organic carbon. (C) 2012 Elsevier B.V. All rights reserved.
关键词	mean residence time (MRT) soil organic carbon global temperature precipitation soil nitrogen anomalies
学科领域	Geography, Physical ; Geosciences, Multidisciplinary
DOI	10.1016/j.gloplacha.2012.10.006
收录类别	SCI
语种	英语
WOS关键词	CO2 EFFLUX ; MATTER DYNAMICS ; LAND-USE ; RESPIRATION ; STORAGE ; DECOMPOSITION ; DEPOSITION ; LONG ; SENSITIVITY ; TURNOVER
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000315557900009
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-6364
资助机构	National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Ministry of Science and Technology of China(Ministry of Science and Technology, China)
作者邮箱	ZOU, JIANWEN/B-3059-2012 ; Huang, Yao/O-6832-2014 ; huang, yao/GWR-5388-2022 ; Huang, Yao/GQH-3308-2022
引用统计	被引频次：78[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27879
专题	植被与环境变化国家重点实验室
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Chen, Shutao,Huang, Yao,Zou, Jianwen,et al. Mean residence time of global topsoil organic carbon depends on temperature, precipitation and soil nitrogen[J]. GLOBAL AND PLANETARY CHANGE,2013,100:99-108.
APA	Chen, Shutao,Huang, Yao,Zou, Jianwen,&Shi, Yanshu.(2013).Mean residence time of global topsoil organic carbon depends on temperature, precipitation and soil nitrogen.GLOBAL AND PLANETARY CHANGE,100,99-108.
MLA	Chen, Shutao,et al."Mean residence time of global topsoil organic carbon depends on temperature, precipitation and soil nitrogen".GLOBAL AND PLANETARY CHANGE 100(2013):99-108.

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