干旱区生态环境知识资源中心(Arid): Attributing vegetation change in an arid and cold watershed with complex ecosystems in northwest China

Arid

DOI	10.1016/j.ecolind.2022.108835
	Attributing vegetation change in an arid and cold watershed with complex ecosystems in northwest China
	Bai, Xuyang; Fu, Jinxia; Li, Yan; Li, Zhi
通讯作者	Li, Z
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	138
英文摘要	Attributing vegetation change in regions with complex ecosystems is fundamental for environmental management. The Manas River Basin in northwest China has a complex mountain-oasis-desert ecosystem sensitive to environmental change because of the arid and cold climate. This study investigated the spatiotemporal variations in vegetation coverage, and further analyzed the attributions in the Manas River basin. In particular, we sepa-rated the contributions of climate change and CO2 fertilization from human activities for each subregion and the whole basin. From 1982 to 2015, the mean annual NDVI values varied with ecosystems, i.e., high in the oasis ecosystem and low in the mountain and desert ecosystems. NDVI significantly increased at a rate of 0.021/10a for the whole study period and for the whole basin, but had spatial and temporal variations. The increase rates of NDVI were larger in the oasis ecosystem than other ecosystems, and they were larger for the period 1982-1997 (0.03/10a) relative to 1998-2015 (0.02/10a). Compared with the period 1982-1997, the vegetation for 1998-2015 was less correlated with climate and more strongly perturbed by human activities. Quantification showed that the anthropogenic contributions of vegetation change were 87% and 88% for the whole basin and the oasis ecosystem, respectively; however, the vegetation change in the mountain and desert ecosystems was overwhelmingly dominated by climate change and CO2 fertilization. The heterogeneity in changes and driving forces of vegetation highlights that the environmental management should be differentiated over space and time for those regions with complex ecosystems.
英文关键词	NDVI Spatiotemporal change Attribution analysis Climate change Manas River Basin
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000791996700001
WOS关键词	CLIMATE-CHANGE ; LAND DEGRADATION ; GREENING TREND ; COVER CHANGE ; RIVER-BASIN ; IRRIGATION ; DYNAMICS ; NDVI ; TEMPERATURE ; SENSITIVITY
WOS类目	Biodiversity Conservation ; 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/2XILL650/392314
推荐引用方式 GB/T 7714	Bai, Xuyang,Fu, Jinxia,Li, Yan,et al. Attributing vegetation change in an arid and cold watershed with complex ecosystems in northwest China[J],2022,138.
APA	Bai, Xuyang,Fu, Jinxia,Li, Yan,&Li, Zhi.(2022).Attributing vegetation change in an arid and cold watershed with complex ecosystems in northwest China.ECOLOGICAL INDICATORS,138.
MLA	Bai, Xuyang,et al."Attributing vegetation change in an arid and cold watershed with complex ecosystems in northwest China".ECOLOGICAL INDICATORS 138(2022).