干旱区生态环境知识资源中心(Arid): Effects of aridification on soil total carbon pools in China's drylands

Arid

DOI	10.1111/gcb.17091
	Effects of aridification on soil total carbon pools in China's drylands
	Ren, Zhuobing; Li, Changjia; Fu, Bojie; Wang, Shuai; Stringer, Lindsay C.
通讯作者	Li, CJ
来源期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
EISSN	1365-2486
出版年	2024
卷号	30 期号:1
英文摘要	Drylands are important carbon pools and are highly vulnerable to climate change, particularly in the context of increasing aridity. However, there has been limited research on the effects of aridification on soil total carbon including soil organic carbon and soil inorganic carbon, which hinders comprehensive understanding and projection of soil carbon dynamics in drylands. To determine the response of soil total carbon to aridification, and to understand how aridification drives soil total carbon variation along the aridity gradient through different ecosystem attributes, we measured soil organic carbon, inorganic carbon and total carbon across a ~4000km aridity gradient in the drylands of northern China. Distribution patterns of organic carbon, inorganic carbon, and total carbon at different sites along the aridity gradient were analyzed. Results showed that soil organic carbon and inorganic carbon had a complementary relationship, that is, an increase in soil inorganic carbon positively compensated for the decrease in organic carbon in semiarid to hyperarid regions. Soil total carbon exhibited a nonlinear change with increasing aridity, and the effect of aridity on total carbon shifted from negative to positive at an aridity level of 0.71. In less arid regions, aridification leads to a decrease in total carbon, mainly through a decrease in organic carbon, whereas in more arid regions, aridification promotes an increase in inorganic carbon and thus an increase in total carbon. Our study highlights the importance of soil inorganic carbon to total carbon and the different effects of aridity on soil carbon pools in drylands. Soil total carbon needs to be considered when developing measures to conserve the terrestrial carbon sink.
英文关键词	distribution pattern driving effects increasing aridity nonlinear response soil inorganic carbon soil organic carbon
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001151213000105
WOS关键词	INORGANIC CARBON ; STORAGE ; SEQUESTRATION ; ACCUMULATION ; NORTHWEST ; NITROGEN ; SAND
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403977
推荐引用方式 GB/T 7714	Ren, Zhuobing,Li, Changjia,Fu, Bojie,et al. Effects of aridification on soil total carbon pools in China's drylands[J],2024,30(1).
APA	Ren, Zhuobing,Li, Changjia,Fu, Bojie,Wang, Shuai,&Stringer, Lindsay C..(2024).Effects of aridification on soil total carbon pools in China's drylands.GLOBAL CHANGE BIOLOGY,30(1).
MLA	Ren, Zhuobing,et al."Effects of aridification on soil total carbon pools in China's drylands".GLOBAL CHANGE BIOLOGY 30.1(2024).