干旱区生态环境知识资源中心(Arid): China's deserts greening and response to climate variability and human activities

Arid

DOI	10.1371/journal.pone.0256462
	China's deserts greening and response to climate variability and human activities
	Liu, Xiaoyu; Xin, Liangjie
通讯作者	Xin, LJ (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China.
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2021
卷号	16 期号:8
英文摘要	Vegetation, which is a good indicator of the impacts of climate variability and human activities, can reflect desert ecosystem dynamics. To reveal the vegetation variations in China's deserts, trends in the monthly, seasonal, and annual normalized difference vegetation index (NDVI) from 2000 to 2017 were measured both temporally and spatially by the Theil-Sen estimator and Mann-Kendall test. Additionally, correlation coefficients and residual analysis were employed to evaluate the correlations between the NDVI and climatic factors and to distinguish the impacts of climate variability and human activities. The results showed that China's deserts underwent greening. The annual NDVI showed a significant increasing trend at a rate of 0.0018/yr, with values of 0.094 in 2000 and 0.126 in 2017. Significant increasing trends in NDVI were observed in all four seasons. The NDVI were higher in summer and autumn than in spring and winter. Both the monthly NDVI and its trends showed an inverted U-shaped curve during the year. Spatially, the greening trends were mainly distributed on the southern edge of the Gurbantunggut Desert, in the northwestern part of the Taklimakan Desert, and in the Kubuqi Desert. The correlations between the NDVI and climatic factors at the monthly and seasonal scales were stronger than those at the annual scale. Temperature and precipitation had positive effects on NDVI at the monthly and seasonal scales, but only precipitation had a positive effect at the annual scale. Human activities, especially oasis expansion and sand stabilization measures, were two major causes of large increasing areas of desert greening in China indicated by the NDVI.
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000729151200010
WOS关键词	LAND-COVER CHANGE ; VEGETATION DYNAMICS ; RIVER-BASIN ; SPATIOTEMPORAL VARIATION ; INTERANNUAL CHANGES ; SEMIARID REGIONS ; NDVI TRENDS ; HEXI REGION ; TEMPERATURE ; PRECIPITATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/373558
作者单位	[Liu, Xiaoyu; Xin, Liangjie] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China; [Liu, Xiaoyu] Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiaoyu,Xin, Liangjie. China's deserts greening and response to climate variability and human activities[J],2021,16(8).
APA	Liu, Xiaoyu,&Xin, Liangjie.(2021).China's deserts greening and response to climate variability and human activities.PLOS ONE,16(8).
MLA	Liu, Xiaoyu,et al."China's deserts greening and response to climate variability and human activities".PLOS ONE 16.8(2021).