The key drivers for the changes in global water scarcity: Water withdrawal versus water availability

doi:10.1016/j.jhydrol.2021.126658

	The key drivers for the changes in global water scarcity: Water withdrawal versus water availability
	Huang, Zhongwei 1; Yuan, Xing 1; Liu, Xingcai 2
刊名	JOURNAL OF HYDROLOGY
	2021-10-01
卷号	601 页码:15
关键词	Water scarcity Water withdrawal Water availability Water stress index
ISSN号	0022-1694
DOI	10.1016/j.jhydrol.2021.126658
通讯作者	Yuan, Xing(xyuan@nuist.edu.cn)
英文摘要	Water scarcity has become a major issue to sustainable development. It can be estimated by available fresh water resources and human water withdrawal, which are affected by both climate change and human activities. However, the key drivers for the changes in water scarcity at global scale remain unclear due to large uncertainties in the estimations of the contributions from changes in water withdrawal and water availability. By using a newly reconstructed water withdrawal dataset and multi-model simulations of water availability, this study assessed global water scarcity evolution during 1971-2010 at half degree resolution and monthly time scale by applying the water stress index (WSI). Results showed that WSI increased in areas with 61.1% of global population during 1971-2010, and the increase in water withdrawal (especially agricultural sector) was the key driving factor for areas with 57.5% of global population. Specifically, growing water withdrawal led to increased water scarcity for areas with 21% of global population in spite of rising water availability resulted from climate change, such as in southeastern China, Southeast Asia, southern India, and Central Africa. In contrast, water scarcity mitigated over some developed areas including parts of USA, Europe and Japan with 8.8% of global population, which resulted from decreased human water withdrawal (especially industrial sector) and increased water availability. This study reveals the synergistic or contrary effects of changes in water withdrawal and water availability on the changes in water scarcity over the globe, and provides useful information for regional water planning and management.
资助项目	National Key R&D Program of China[2018YFA0606002] ; National Natural Science Foundation of China[41875105] ; General Subject of Colleges and Universities Natural Science Foundation of Jiangsu Province[20KJB170026] ; Startup Foundation for Introducing Talent of NUIST[2019r080] ; Startup Foundation for Introducing Talent of NUIST[2018r078]
WOS关键词	CLIMATE-CHANGE ; INTEGRATED MODEL ; STRESS ; CHINA ; RESOURCES ; 21ST-CENTURY ; AGRICULTURE ; UNCERTAINTY ; ASSESSMENTS ; IRRIGATION
WOS研究方向	Engineering ; Geology ; Water Resources
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000695816300070
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; General Subject of Colleges and Universities Natural Science Foundation of Jiangsu Province ; Startup Foundation for Introducing Talent of NUIST
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165726]
专题	中国科学院地理科学与资源研究所
通讯作者	Yuan, Xing
作者单位	1.Nanjing Univ Informat Sci & Technol, Sch Hydrol & Water Resources, Nanjing, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Huang, Zhongwei,Yuan, Xing,Liu, Xingcai. The key drivers for the changes in global water scarcity: Water withdrawal versus water availability[J]. JOURNAL OF HYDROLOGY,2021,601:15.
APA	Huang, Zhongwei,Yuan, Xing,&Liu, Xingcai.(2021).The key drivers for the changes in global water scarcity: Water withdrawal versus water availability.JOURNAL OF HYDROLOGY,601,15.
MLA	Huang, Zhongwei,et al."The key drivers for the changes in global water scarcity: Water withdrawal versus water availability".JOURNAL OF HYDROLOGY 601(2021):15.