气候变化领域集成服务门户(CCPortal): Water competition between cities and agriculture driven by climate change and urban growth

CCPortal

DOI	10.1038/s41893-017-0006-8
	Water competition between cities and agriculture driven by climate change and urban growth
	Flörke M.; Schneider C.; McDonald R.I.
发表日期	2018
ISSN	2398-9629
起始页码	51
结束页码	58
卷号	1 期号:1
英文摘要	Urban water demand will increase by 80% by 2050, while climate change will alter the timing and distribution of water. Here we quantify the magnitude of these twin challenges to urban water security, combining a dataset of urban water sources of 482 of the world's largest cities with estimates of future water demand, based on the Intergovernmental Panel on Climate Change (IPCC)'s Fifth Assessment scenarios, and predictions of future water availability, using the WaterGAP3 modelling framework. We project an urban surface-water deficit of 1,386-6,764 million m. More than 27% of cities studied, containing 233 million people, will have water demands that exceed surface-water availability. An additional 19% of cities, which are dependent on surface-water transfers, have a high potential for conflict between the urban and agricultural sectors, since both sectors cannot obtain their estimated future water demands. In 80% of these high-conflict watersheds, improvements in agricultural water-use efficiency could free up enough water for urban use. Investments in improving agricultural water use could thus serve as an important global change adaptation strategy. © 2017 The Author(s) 2018, under exclusive licence to Macmillan Publishers Limited, part of Springer Nature.
语种	英语
scopus关键词	Agriculture; Surface waters; Urban growth; Water supply; Agricultural sector; Agricultural water use; Distribution of water; Intergovernmental panel on climate changes; Modelling framework; Urban surface waters; Urban water securities; Water availability; Climate change
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163176
作者单位	Center for Environmental Systems Research, University of Kassel, Kassel, Germany; Worldwide Office, Nature Conservancy, Washington, DC, United States
推荐引用方式 GB/T 7714	Flörke M.,Schneider C.,McDonald R.I.. Water competition between cities and agriculture driven by climate change and urban growth[J],2018,1(1).
APA	Flörke M.,Schneider C.,&McDonald R.I..(2018).Water competition between cities and agriculture driven by climate change and urban growth.Nature Sustainability,1(1).
MLA	Flörke M.,et al."Water competition between cities and agriculture driven by climate change and urban growth".Nature Sustainability 1.1(2018).