干旱区生态环境知识资源中心(Arid): Climate Drivers Contribute in Vegetation Greening Stalls of Arid Xinjiang, China: An Atmospheric Water Drying Effect

Arid

DOI	10.3390/w14132019
	Climate Drivers Contribute in Vegetation Greening Stalls of Arid Xinjiang, China: An Atmospheric Water Drying Effect
	Li, Moyan; Guan, Jingyun; Zheng, Jianghua
通讯作者	Zheng, JH
来源期刊	WATER
EISSN	2073-4441
出版年	2022
卷号	14 期号:13
英文摘要	Xinjiang, an arid region of China, has experienced a substantial warming-wetting trend over the past five decades. However, climate change has affected vegetation growth/greening in arid Central Asia in unexpected ways due to complex ecological effects. We found a significant greening trend (consistent increase in the normalized difference vegetation index or NDVI) from 1982 to 1996, during the growing season; however, the NDVI consequently decreased and plateaued from 1997 to 2015, especially in naturally vegetated regions. Atmospheric vapor pressure deficit (VPD) is a critical driver of vegetation growth, is a direct measure of atmospheric aridity, and has increased sharply in recent decades. A partial correlation analysis indicated a significant relationship between growing season NDVI and VPD from 1997 to 2015. This implies that decreased VPD corresponds to increasing NDVI, and increasing VPD corresponds to a decrease and plateauing in the NDVI trend. Using the partial derivative equation method, our results suggest that the trend in growing season NDVI was affected primarily by increasing VPD (contributing 87.57%) from 1997 to 2015, especially in the grassland and desert biomes. Rising temperatures lead to a greater VPD, resulting in exacerbated evaporative water loss. Soil drought and atmospheric aridity limit plant stomatal conductance and could effectively lead to a decrease in the greening trend and increased vegetation mortality in arid Xinjiang. Our results emphasize the importance of VPD as a limiting factor of greening trends in arid regions. The influence of VPD on vegetation growth should be considered when evaluating arid ecosystem functioning under global warming.
英文关键词	vegetation NDVI vapor pressure deficit Xinjiang climate change
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:000823896500001
WOS关键词	NET PRIMARY PRODUCTION ; IMPACTS ; TRENDS ; DYNAMICS ; REGION ; TEMPERATURE ; SEASONALITY ; GREENNESS ; EXTREMES ; DROUGHT
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394802
推荐引用方式 GB/T 7714	Li, Moyan,Guan, Jingyun,Zheng, Jianghua. Climate Drivers Contribute in Vegetation Greening Stalls of Arid Xinjiang, China: An Atmospheric Water Drying Effect[J],2022,14(13).
APA	Li, Moyan,Guan, Jingyun,&Zheng, Jianghua.(2022).Climate Drivers Contribute in Vegetation Greening Stalls of Arid Xinjiang, China: An Atmospheric Water Drying Effect.WATER,14(13).
MLA	Li, Moyan,et al."Climate Drivers Contribute in Vegetation Greening Stalls of Arid Xinjiang, China: An Atmospheric Water Drying Effect".WATER 14.13(2022).