干旱区生态环境知识资源中心(Arid): Contribution of cropland expansion to regional carbon stocks in an arid area of China: a case study in Xinjiang

Arid

DOI	10.1080/17583004.2022.2043446
	Contribution of cropland expansion to regional carbon stocks in an arid area of China: a case study in Xinjiang
	Wang, Yuangang; Li, Chaofan; Ochege, Friday Uchenna; Han, Qifei; Hellwich, Olaf; Wu, Shixin; Luo, Geping
通讯作者	Luo, GP
来源期刊	CARBON MANAGEMENT
ISSN	1758-3004
EISSN	1758-3012
出版年	2022
卷号	13 期号:1 页码:42-54
英文摘要	There has been an increasing number of studies on the potential effects of land-use change on the carbon (C) balance. However, few of these studies have focused on arid regions. Cropland in Xinjiang, a typical arid region in China, has expanded dramatically over the last 40 years. This study applied the Carbon Bookkeeping Model to estimate the changes in C stocks resulting from cropland expansion in Xinjiang from 1975 to 2015. The results showed that the area of cropland increased by a factor of similar to 1.6. This increase was driven by advancements in agricultural technology and favorable agricultural policies. The increase in cropland area of 2.03 Mha (M = 10(6)) was the result of the clearing of similar to 4.09 Mha land for cropland and the conversion of 2.06 Mha cropland to other land cover types. The expansion in cropland resulted in substantial sequestration of C, with that in Xinjiang amounting to 94.24 Tg C (1Tg = 10(12)g), accounting for 1.4% of the regional C stocks. Land clearing for cropland (LCC) had the greatest contribution to C sequestration in Xinjiang. The rate of increase in C density through LCC was 0.61 Mg C ha(-1)a(-1) and 1.54 Mg C ha(-1)a(-1) from 1975 to 2004 and 2005 to 2015, respectively. C sequestration due to cropland loss (CLO) of 29.40 Tg C was attributed to the expansion of built-up land and afforestation. Sustainable agricultural activities represented by large-scale clearing for cropland were a major C sink in Xinjiang. Therefore, sustainable management of cropland is essential for maintaining a high C density and preventing loss of C to the atmosphere through cropland abandonment in the future.
英文关键词	Cropland expansion carbon stocks Bookkeeping model Arid region Xinjiang
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000778541300001
WOS关键词	LAND-COVER CHANGE ; LONG-TERM ; EMISSIONS ; ECOSYSTEMS ; BALANCE ; DEFORESTATION ; ACCUMULATION ; DYNAMICS ; PATTERNS ; IMPACT
WOS类目	Environmental Sciences ; Environmental Studies
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/2XILL650/392054
推荐引用方式 GB/T 7714	Wang, Yuangang,Li, Chaofan,Ochege, Friday Uchenna,et al. Contribution of cropland expansion to regional carbon stocks in an arid area of China: a case study in Xinjiang[J],2022,13(1):42-54.
APA	Wang, Yuangang.,Li, Chaofan.,Ochege, Friday Uchenna.,Han, Qifei.,Hellwich, Olaf.,...&Luo, Geping.(2022).Contribution of cropland expansion to regional carbon stocks in an arid area of China: a case study in Xinjiang.CARBON MANAGEMENT,13(1),42-54.
MLA	Wang, Yuangang,et al."Contribution of cropland expansion to regional carbon stocks in an arid area of China: a case study in Xinjiang".CARBON MANAGEMENT 13.1(2022):42-54.