气候变化领域集成服务门户(CCPortal): Global groundwater wells at risk of running dry

CCPortal

DOI	10.1126/science.abc2755
	Global groundwater wells at risk of running dry
	Jasechko S.; Perrone D.
发表日期	2021
ISSN	0036-8075
起始页码	418
结束页码	421
卷号	372 期号:6540
英文摘要	Groundwater wells supply water to billions of people, but they can run dry when water tables decline. Here, we analyzed construction records for ~39 million globally distributed wells. We show that 6 to 20% of wells are no more than 5 meters deeper than the water table, implying that millions of wells are at risk of running dry if groundwater levels decline by only a few meters. Further, newer wells are not being constructed deeper than older wells in some of the places experiencing significant groundwater level declines, suggesting that newer wells are at least as likely to run dry as older wells if groundwater levels continue to decline. Poor water quality in deep aquifers and the high costs of well construction limit the effectiveness of tapping deep groundwater to stave off the loss of access to water as wells run dry. © 2021 American Association for the Advancement of Science. All rights reserved.
英文关键词	ground water; aquifer; groundwater; water quality; well water; aquifer; Article; building industry; controlled study; correlation coefficient; environment; environmental parameters; histogram; measurement; running dry; trend study; water quality; water supply; well
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244151
作者单位	Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106, United States; Environmental Studies Program, University of California, Santa Barbara, CA 93106, United States
推荐引用方式 GB/T 7714	Jasechko S.,Perrone D.. Global groundwater wells at risk of running dry[J],2021,372(6540).
APA	Jasechko S.,&Perrone D..(2021).Global groundwater wells at risk of running dry.Science,372(6540).
MLA	Jasechko S.,et al."Global groundwater wells at risk of running dry".Science 372.6540(2021).