中国科学院机构知识库网格系统: Increased topsoil carbon stock across China's forests

Increased topsoil carbon stock across China's forests

文献类型：期刊论文


作者	Yang, Yuanhe; Li, Pin 1; Ding, Jinzhi 2; Zhao, Xia ; Ma, Wenhong 3; Ji, Chengjun 1; Fang, Jingyun1
刊名	GLOBAL CHANGE BIOLOGY
出版日期	2014
卷号	20 期号:8 页码:2687-2696
关键词	artificial neural network carbon cycle carbon-climate feedback forest ecosystems global change soil inventory soil organic carbon
ISSN号	1354-1013
DOI	10.1111/gcb.12536
文献子类	Article
英文摘要	Biomass carbon accumulation in forest ecosystems is a widespread phenomenon at both regional and global scales. However, as coupled carbon-climate models predicted, a positive feedback could be triggered if accelerated soil carbon decomposition offsets enhanced vegetation growth under a warming climate. It is thus crucial to reveal whether and how soil carbon stock in forest ecosystems has changed over recent decades. However, large-scale changes in soil carbon stock across forest ecosystems have not yet been carefully examined at both regional and global scales, which have been widely perceived as a big bottleneck in untangling carbon-climate feedback. Using newly developed database and sophisticated data mining approach, here we evaluated temporal changes in topsoil carbon stock across major forest ecosystem in China and analysed potential drivers in soil carbon dynamics over broad geographical scale. Our results indicated that topsoil carbon stock increased significantly within all of five major forest types during the period of 1980s-2000s, with an overall rate of 20.0 g C m(-2) yr(-1) (95% confidence interval, 14.1-25.5). The magnitude of soil carbon accumulation across coniferous forests and coniferous/broadleaved mixed forests exhibited meaningful increases with both mean annual temperature and precipitation. Moreover, soil carbon dynamics across these forest ecosystems were positively associated with clay content, with a larger amount of SOC accumulation occurring in fine-textured soils. In contrast, changes in soil carbon stock across broadleaved forests were insensitive to either climatic or edaphic variables. Overall, these results suggest that soil carbon accumulation does not counteract vegetation carbon sequestration across China's forest ecosystems. The combination of soil carbon accumulation and vegetation carbon sequestration triggers a negative feedback to climate warming, rather than a positive feedback predicted by coupled carbon-climate models.
学科主题	Biodiversity Conservation ; Ecology ; Environmental Sciences
出版地	HOBOKEN
电子版国际标准刊号	1365-2486
WOS关键词	SOIL ORGANIC-CARBON ; OLD-GROWTH FORESTS ; TERRESTRIAL ECOSYSTEMS ; ENVIRONMENTAL CONTROLS ; TIBETAN GRASSLANDS ; EUROPEAN FORESTS ; CLIMATE-CHANGE ; STORAGE ; VEGETATION ; PATTERNS
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000339100200028
出版者	WILEY-BLACKWELL
资助机构	National Basic Research Program of China on Global Change [2014CB954001, 2010CB950600] ; National Natural Science Foundation of China [31322011, 41371213, 31021001] ; Thousand Young Talents Program
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/27151]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Dept Ecol, Beijing 100871, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Inner Mongolia Univ, Coll Life Sci, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yuanhe,Li, Pin,Ding, Jinzhi,et al. Increased topsoil carbon stock across China's forests[J]. GLOBAL CHANGE BIOLOGY,2014,20(8):2687-2696.
APA	Yang, Yuanhe.,Li, Pin.,Ding, Jinzhi.,Zhao, Xia.,Ma, Wenhong.,...&Fang, Jingyun.(2014).Increased topsoil carbon stock across China's forests.GLOBAL CHANGE BIOLOGY,20(8),2687-2696.
MLA	Yang, Yuanhe,et al."Increased topsoil carbon stock across China's forests".GLOBAL CHANGE BIOLOGY 20.8(2014):2687-2696.

入库方式： OAI收割

来源：植物研究所

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Increased topsoil carbon stock across China's forests

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