干旱区生态环境知识资源中心(Arid): Vulnerability and driving factors of soil inorganic carbon stocks in Chinese croplands

Arid

DOI	10.1016/j.scitotenv.2022.154087
	Vulnerability and driving factors of soil inorganic carbon stocks in Chinese croplands
	Tao, Jingjing; Raza, Sajjad; Zhao, Mengzhen; Cui, Jiaojiao; Wang, Peizhou; Sui, Yueyu; Zamanian, Kazem; Kuzyakov, Yakov; Xu, Minggang; Chen, Zhujun; Zhou, Jianbin
通讯作者	Chen, ZJ ; Zhou, JB
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2022
卷号	825
英文摘要	The long-term stability of soil inorganic carbon (SIC) and its minimum contribution towards global C cycle has been challenged, as recent studies have showed rapid decreases in SIC stocks in intensive agricultural systems. However, the extent of SIC losses and its driving factors remains unclear. Here, we compared changes in SIC density (SICD) in Chinese croplands between the 1980s and 2010s. The SIC contents in 1980s were obtained from second national soil survey (n = 949) and published studies (n = 47). The SIC contents in 2010s were based on resampling of soil profiles from the same locations during 2019 and 2020 (n = 30), as well as data from published studies and national soil survey (n = 903). We found that Chinese croplands have lost 27-38% of SICD from the 0-40 cm soil layer and that the soil pH has decreased by 0.53 units over the past 30 years. These SIC losses increased with the ratio of precipitation (P) to potential evapotranspiration (PET) and most notably with nitrogen (N) fertilization. The SICD decreased greatly in humid and semiarid regions, and these losses were enhanced by high N fertilization rates; however, the SICD increased in very arid regions. This analysis demonstrates that the water balance and N fertilization are major drivers leading to dramatic losses of SICD in croplands and, consequently, to decreases in soil fertility and functions.
英文关键词	Soil inorganic carbon density Greenhouse gases Water balance Nitrogen fertilization Carbon cycle Soil acidification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000764242600016
WOS关键词	LAND-USE CHANGE ; NITROGEN-FERTILIZATION ; SEQUESTRATION ; BASIN ; PH ; STORAGE ; REGION ; ACIDIFICATION ; CONSEQUENCES ; ACCUMULATION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394358
推荐引用方式 GB/T 7714	Tao, Jingjing,Raza, Sajjad,Zhao, Mengzhen,et al. Vulnerability and driving factors of soil inorganic carbon stocks in Chinese croplands[J],2022,825.
APA	Tao, Jingjing.,Raza, Sajjad.,Zhao, Mengzhen.,Cui, Jiaojiao.,Wang, Peizhou.,...&Zhou, Jianbin.(2022).Vulnerability and driving factors of soil inorganic carbon stocks in Chinese croplands.SCIENCE OF THE TOTAL ENVIRONMENT,825.
MLA	Tao, Jingjing,et al."Vulnerability and driving factors of soil inorganic carbon stocks in Chinese croplands".SCIENCE OF THE TOTAL ENVIRONMENT 825(2022).