气候变化领域集成服务门户(CCPortal): Increasing dependence of lowland populations on mountain water resources

CCPortal

DOI	10.1038/s41893-020-0559-9
	Increasing dependence of lowland populations on mountain water resources
	Viviroli D.; Kummu M.; Meybeck M.; Kallio M.; Wada Y.
发表日期	2020
ISSN	2398-9629
起始页码	917
结束页码	928
卷号	3 期号:11
英文摘要	Mountain areas provide disproportionally high runoff in many parts of the world, but their importance for water resources and food production has not been clarified from the viewpoint of the lowland areas downstream. Here we quantify the extent to which lowland inhabitants potentially depend on runoff contributions from mountain areas (39% of the global land mass). We show that ~1.5 billion people (24% of the world’s lowland population) are projected to depend critically on runoff contributions from mountains by the mid-twenty-first century under a ‘middle of the road’ scenario, compared with ~0.2 billion (7%) in the 1960s. This striking rise is mainly due to increased local water consumption in the lowlands, whereas changes in mountain and lowland runoff play only a minor role. We further show that one-third of the global lowland area equipped for irrigation is currently located in regions that both depend heavily on runoff contributions from mountains and make unsustainable use of local blue water resources, a figure that is likely to rise to well over 50% in the coming decades. Our findings imply that mountain areas should receive particular attention in water resources management and underscore the protection they deserve in efforts towards sustainable development. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Runoff; Food production; Land-masses; Water consumption; Water resources management; Landforms
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/163539
作者单位	Department of Geography, University of Zürich, Zürich, Switzerland; Water & Development Research Group, Aalto University, Espoo, Finland; METIS, Sorbonne Université, Paris, France; Geoinformatics Research Group, Aalto University, Espoo, Finland; International Institute for Applied Systems Analysis, Laxenburg, Austria; Department of Physical Geography, Faculty of Geosciences, Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Viviroli D.,Kummu M.,Meybeck M.,et al. Increasing dependence of lowland populations on mountain water resources[J],2020,3(11).
APA	Viviroli D.,Kummu M.,Meybeck M.,Kallio M.,&Wada Y..(2020).Increasing dependence of lowland populations on mountain water resources.Nature Sustainability,3(11).
MLA	Viviroli D.,et al."Increasing dependence of lowland populations on mountain water resources".Nature Sustainability 3.11(2020).