气候变化领域集成服务门户(CCPortal): Role of dams in reducing global flood exposure under climate change

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DOI	10.1038/s41467-020-20704-0
	Role of dams in reducing global flood exposure under climate change
	Boulange J.; Hanasaki N.; Yamazaki D.; Pokhrel Y.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Globally, flood risk is projected to increase in the future due to climate change and population growth. Here, we quantify the role of dams in flood mitigation, previously unaccounted for in global flood studies, by simulating the floodplain dynamics and flow regulation by dams. We show that, ignoring flow regulation by dams, the average number of people exposed to flooding below dams amount to 9.1 and 15.3 million per year, by the end of the 21st century (holding population constant), for the representative concentration pathway (RCP) 2.6 and 6.0, respectively. Accounting for dams reduces the number of people exposed to floods by 20.6 and 12.9% (for RCP2.6 and RCP6.0, respectively). While environmental problems caused by dams warrant further investigations, our results indicate that consideration of dams significantly affect the estimation of future population exposure to flood, emphasizing the need to integrate them in model-based impact analysis of climate change. © 2021, The Author(s).
语种	英语
scopus关键词	article; climate change; flooding; floodplain; human; population exposure
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250782
作者单位	National Institute for Environmental Studies (NIES), Tsukuba, Japan; Institute of Industrial Science, The University of Tokyo, Tokyo, Japan; Department of Civil and Environmental Engineering, Michigan State University, East Lansing, MI, United States
推荐引用方式 GB/T 7714	Boulange J.,Hanasaki N.,Yamazaki D.,et al. Role of dams in reducing global flood exposure under climate change[J],2021,12(1).
APA	Boulange J.,Hanasaki N.,Yamazaki D.,&Pokhrel Y..(2021).Role of dams in reducing global flood exposure under climate change.Nature Communications,12(1).
MLA	Boulange J.,et al."Role of dams in reducing global flood exposure under climate change".Nature Communications 12.1(2021).