气候变化领域集成服务门户(CCPortal): Scarcity and quality risks for future global urban water supply

CCPortal

DOI	10.1007/s10980-024-01832-0
	Scarcity and quality risks for future global urban water supply
	Liu, Zhifeng; Ying, Jiahe; He, Chunyang; Guan, Dongjie; Pan, Xinhao; Dai, Yihua; Gong, Binghua; He, Keren; Lv, Caifeng; Wang, Xin; Lin, Jingyu; Liu, Yanxu; Bryan, Brett A.
发表日期	2024
ISSN	0921-2973
EISSN	1572-9761
起始页码	39
结束页码	2
卷号	39 期号:2
英文摘要	Context Supply of freshwater to the world's cities is increasingly affected by human pressures and climate change. Understanding the effects of human pressures and climate change on global urban water scarcity and quality risks in an integrated way is important. Objectives The objective of this study is to assess the scarcity and quality risks to water security for 304 large cities (population > 1 million) across the world for 2015 and 2050. Methods We assessed the water scarcity according to water demand and availability, and evaluated the quality of water supply in terms of the population density, cropland fertilization, and landscape patterns in source watersheds. In addition, the impacts of human pressures and climate change on urban water risks were quantified using contribution analysis. Results We found that about 90% of these cities faced water risks in 2015. The number of cities facing quality risk was about three times the number of cities facing scarcity risk, and nearly a quarter faced dual risks. From 2015 to 2050, 88.8-99.7% of cities were projected to face rising water risks with about one-third facing dual risks by 2050. Increase in water demand was the main cause of rising scarcity risk; growth in population and crop fertilization in source watersheds were the main reasons for rising quality risk. Conclusions There is an urgent need to promote landscape conservation of urban water source areas, implement sustainable urban water planning and governance, improve water supply infrastructure, and refine ecological compensation regimes to achieve global urban water security.
英文关键词	Urban landscape sustainability; Urban water source areas; Climate change; Landscape dynamic; Water stress; Water pollution
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
WOS类目	Ecology ; Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001158841200003
来源期刊	LANDSCAPE ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/307444
作者单位	Beijing Normal University; Beijing Normal University; Beijing Normal University; Beijing Normal University; Chongqing Jiaotong University; Arizona State University; Arizona State University-Tempe; Guangdong University of Technology; Southern Marine Science & Engineering Guangdong Laboratory; Southern Marine Science & Engineering Guangdong Laboratory (Guangzhou); Deakin University
推荐引用方式 GB/T 7714	Liu, Zhifeng,Ying, Jiahe,He, Chunyang,et al. Scarcity and quality risks for future global urban water supply[J],2024,39(2).
APA	Liu, Zhifeng.,Ying, Jiahe.,He, Chunyang.,Guan, Dongjie.,Pan, Xinhao.,...&Bryan, Brett A..(2024).Scarcity and quality risks for future global urban water supply.LANDSCAPE ECOLOGY,39(2).
MLA	Liu, Zhifeng,et al."Scarcity and quality risks for future global urban water supply".LANDSCAPE ECOLOGY 39.2(2024).