Quantitative contributions of climate change and human activities to vegetation changes over multiple time scales on the Loess Plateau

doi:10.1016/j.scitotenv.2020.142419

	Quantitative contributions of climate change and human activities to vegetation changes over multiple time scales on the Loess Plateau
	Shi, Shangyu 1,4; Yu, Jingjie 1,4; Wang, Fei 2,4; Wang, Ping 1,4; Zhang, Yichi 1,4; Jin, Kai 2,3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-02-10
卷号	755 页码:14
关键词	Vegetation Climate change Human activities Multiple time scales Normalized difference vegetation index Standardized precipitation evapotranspiration index
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.142419
通讯作者	Yu, Jingjie(yujj@igsnrr.ac.cn)
英文摘要	Vegetation is a crucial component of terrestrial ecosystems, and its changes are driven mainly by a combination of climate change and human activities. This paper aims to reveal the relationship between vegetation and climate change by using the normalized difference vegetation index (NDVI) and standardized precipitation evapotranspiration index (SPEI), and to find the cause of vegetation change by performing residual analysis on the Loess Plateau during the period from 2000 to 2016. The results showed that the NDVI on the Loess Plateau exhibited an increase of 0.086 per decade, and an increasing trend was observed across 94.86% of the total area. The relationship between the NDVI and SPEI was mainly positive, and the correlation increased as the time scale of the SPEI lengthened, indicating that long-term water availability was the major climate factor affecting vegetation growth. Residual analysis indicated that climate change was responsible for 45.78% of NDVI variation, while human activities were responsible for 54.22%. In areas with degraded vegetation, the relative roles of climate change and human activities were 28.11% and 72.89%, respectively. In addition, the relative role of climate change increased with an increase in the time scales, implying that the long-term NDVI trend was more sensitive to climate change then the short-term trend. The results of this study are expected to enhance our understanding of vegetation changes under climate change and human activities and provide a scientific basis for future ecological restoration in arid regions. (C) 2020 Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[41877165] ; National Natural Science Foundation of China[41671023] ; China Geological Survey Project[DD20190504]
WOS关键词	GLOBAL TERRESTRIAL ECOSYSTEMS ; LAND-USE CHANGE ; SOIL-MOISTURE ; ECOLOGICAL RESTORATION ; AIR-TEMPERATURE ; CARBON-DIOXIDE ; CHINA ; IMPACTS ; WATER ; PRECIPITATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000600786700003
资助机构	National Natural Science Foundation of China ; China Geological Survey Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136660]
专题	中国科学院地理科学与资源研究所
通讯作者	Yu, Jingjie
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Qingdao Agr Univ, Coll Resources & Environm, Qingdao Engn Res Ctr Rural Environm, Qingdao 266109, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Shangyu,Yu, Jingjie,Wang, Fei,et al. Quantitative contributions of climate change and human activities to vegetation changes over multiple time scales on the Loess Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,755:14.
APA	Shi, Shangyu,Yu, Jingjie,Wang, Fei,Wang, Ping,Zhang, Yichi,&Jin, Kai.(2021).Quantitative contributions of climate change and human activities to vegetation changes over multiple time scales on the Loess Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,755,14.
MLA	Shi, Shangyu,et al."Quantitative contributions of climate change and human activities to vegetation changes over multiple time scales on the Loess Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021):14.