干旱区生态环境知识资源中心(Arid): Spatial and temporal effects of drought on Chinese vegetation under different coverage levels

Arid

DOI	10.1016/j.scitotenv.2020.137166
	Spatial and temporal effects of drought on Chinese vegetation under different coverage levels
	Ding, Yibo; Xu, Jiatun; Wang, Xiaowen; Peng, Xiongbiao; Cai, Huanjie
通讯作者	Xu, Jiatun ; Cai, Huanjie
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	716
英文摘要	Land surface vegetation dynamics are strongly affected by drought. Thus, understanding the responses of vegetation to drought can inform measures to increase biome stability. In this study, the normalized difference vegetation index (NDVI) and the Palmer drought severity index (PDSI) were utilized to investigate the relationship between vegetation activity and drought across different drought regions and ecological community types from 1982 to 2015. Our results showed that the highest correlation between monthly NDVI and PDSI at different timescales (1-36 months) indicated the degree of drought impact on vegetation. There were diverse responses of vegetation to drought according to the drought features and dimatic environment. The northern grassland, cropland, and desert ecosystems were strongly impacted by drought. These vegetation ecosystems had a low sensitivity to drought in southern China. Drought had the strongest impact on grassland in summer, which is the high frequency drought season. The most susceptible ecosystem types to drought were those with homogenous vegetation, especially under long-term drought conditions (such as the Inner Mongolia Plateau dominated by grassland). Under global warming, drought with high-temperature characteristics is expected to become more frequent and severe. Such drought could threaten the survival of plateau grassland, arid plain grassland, and rain-fed cropland, as high temperatures accelerate evaporation, leading to water deficit. However, moist forests showed little threat under normal drought. We suggest that future research should focus on vegetation activity in northern and southwestern China, where the vegetation shows the greatest sensitivity to drought. (C) 2020 Elsevier B.V. All rights reserved.
英文关键词	Vegetation activity Meteorological Climatic characteristics MODIS Correlation analysis
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000519987300128
WOS关键词	NET PRIMARY PRODUCTIVITY ; WATER-USE EFFICIENCY ; CLIMATE-CHANGE ; RIVER-BASIN ; FOREST VEGETATION ; EXTREME DROUGHT ; LOESS PLATEAU ; TIME-SCALES ; LAND-USE ; RESPONSES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315545
作者单位	(1)Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China;(2)Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yangling 712100, Shaanxi, Peoples R China;(3)Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Ding, Yibo,Xu, Jiatun,Wang, Xiaowen,et al. Spatial and temporal effects of drought on Chinese vegetation under different coverage levels[J]. 西北农林科技大学,2020,716.
APA	Ding, Yibo,Xu, Jiatun,Wang, Xiaowen,Peng, Xiongbiao,&Cai, Huanjie.(2020).Spatial and temporal effects of drought on Chinese vegetation under different coverage levels.SCIENCE OF THE TOTAL ENVIRONMENT,716.
MLA	Ding, Yibo,et al."Spatial and temporal effects of drought on Chinese vegetation under different coverage levels".SCIENCE OF THE TOTAL ENVIRONMENT 716(2020).