干旱区生态环境知识资源中心(Arid): Carbon Sink Trends in the Karst Regions of Southwest China: Impacts of Ecological Restoration and Climate Change

Arid

DOI	10.3390/land12101906
	Carbon Sink Trends in the Karst Regions of Southwest China: Impacts of Ecological Restoration and Climate Change
	Xu, Xiaojuan; Jiao, Fusheng; Lin, Dayi; Liu, Jing; Zhang, Kun; Yang, Ruozhu; Lin, Naifeng; Zou, Changxin
通讯作者	Lin, NF ; Zou, CX
来源期刊	LAND
EISSN	2073-445X
出版年	2023
卷号	12 期号:10
英文摘要	Southwest China (SWC) holds the distinction of being the world's largest rock desertification area. Nevertheless, the impacts of climate change and ecological restoration projects on the carbon sinks in the karst area of Southwest China have not been systematically evaluated. In this study, we calculated carbon sinks by utilizing the Carnegie-Ames-Stanford Approach (CASA) model, and the actual measurements, including the net primary productivity (NPP) data and soil respiration (Rs,) were calculated to obtain carbon sink data. Our findings suggest that the carbon sinks in the karst areas are displaying increasing trends or positive reversals, accounting for 58.47% of the area, which is larger than the overall average of 45.08% for Southwest China. This suggests that the karst areas have a greater carbon sequestration potential. However, approximately 10.42% of carbon sinks experience negative reversals. The regions with increasing and positive reversals are primarily located in the western parts of Guizhou and Guangxi, while negative reversals are observed in the eastern parts of Chongqing, Guangxi, and Guizhou. Ecological restoration projects are the main driving factors for the carbon sinks with increasing trends. Increased humidity and ecological restoration management are the main reasons for the positive reversals of carbon sinks. However, warming and drought shift the carbon sinks from increasing to decreasing in Chongqing, east of Guangxi and Guizhou. The findings of this study highlight the significant role of ecological restoration projects and reexamine the impact of climate change on carbon sequestration.
英文关键词	carbon sinks climate change ecological restoration Southwest China karstification
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:001095258200001
WOS关键词	LAND-USE CHANGE ; TERRESTRIAL ECOSYSTEMS ; SOIL RESPIRATION ; ARIDITY ; WORLD ; BASIN
WOS类目	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/2XILL650/397697
推荐引用方式 GB/T 7714	Xu, Xiaojuan,Jiao, Fusheng,Lin, Dayi,et al. Carbon Sink Trends in the Karst Regions of Southwest China: Impacts of Ecological Restoration and Climate Change[J],2023,12(10).
APA	Xu, Xiaojuan.,Jiao, Fusheng.,Lin, Dayi.,Liu, Jing.,Zhang, Kun.,...&Zou, Changxin.(2023).Carbon Sink Trends in the Karst Regions of Southwest China: Impacts of Ecological Restoration and Climate Change.LAND,12(10).
MLA	Xu, Xiaojuan,et al."Carbon Sink Trends in the Karst Regions of Southwest China: Impacts of Ecological Restoration and Climate Change".LAND 12.10(2023).