干旱区生态环境知识资源中心(Arid): Climate change and topographic differences influence grassland vegetation greening across environmental gradients

Arid

DOI	10.3389/fenvs.2023.1324742
	Climate change and topographic differences influence grassland vegetation greening across environmental gradients
	Xun, Qilei; An, Shazhou; Lu, Mingzhi
通讯作者	Lu, MZ
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2024
卷号	11
英文摘要	Despite the research on the responses of grassland vegetation to climate change and topography has advance worldwide, the large-scale importance of these parameters to grassland vegetation greening in arid regions across environmental gradients is unclear. To address this, in this study, we applied MODIS Normalized Difference Vegetation Index (NDVI) data and trend analysis methods to measure the spatial-temporal variation in grassland vegetation greening in central Eurasia. Multiple regression models and hierarchical partitioning were used to quantify the importance of climate [annual precipitation (AP), annual mean temperature (AMT), relative humidity (RH)] and topography [elevation (ELE), aspect (ASP), topographic position index (TPI)] to the NDVI. The results showed that there was a significant increasing trend in the NDVI of meadows, but not other grassland types, from 2000 to 2021 (3.3 x 10(-3)/year, p < 0.05). Additionally, the responses of the NDVI to climate and topography in deserts were positively correlated with RH, AP, and ELE. Meanwhile, the dependence of NDVI on climate and topography decreased with increasing RH. Under conditions of escalating AMT and AP, RH and ELE independently contributed to explaining the NDVI. However, RH may be the key determinant of long-term NDVI stabilization in arid grassland. These findings underscore the significance of vegetation-climate-topography feedback and can inform the development of more comprehensive and effective climate mitigation and adaptation strategies.
英文关键词	climate topography NDVI Xinjiang grassland
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:001148498700001
WOS关键词	VARIABILITY ; RESPONSES ; INDEXES ; TEMPERATURE ; COMPETITION ; CALIFORNIA ; WATER ; ASIA
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/2XILL650/403824
推荐引用方式 GB/T 7714	Xun, Qilei,An, Shazhou,Lu, Mingzhi. Climate change and topographic differences influence grassland vegetation greening across environmental gradients[J],2024,11.
APA	Xun, Qilei,An, Shazhou,&Lu, Mingzhi.(2024).Climate change and topographic differences influence grassland vegetation greening across environmental gradients.FRONTIERS IN ENVIRONMENTAL SCIENCE,11.
MLA	Xun, Qilei,et al."Climate change and topographic differences influence grassland vegetation greening across environmental gradients".FRONTIERS IN ENVIRONMENTAL SCIENCE 11(2024).