气候变化领域集成服务门户(CCPortal): The human factor in seasonal streamflows across natural and managed watersheds of North America

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DOI	10.1038/s41893-022-00848-1
	The human factor in seasonal streamflows across natural and managed watersheds of North America
	Singh, Nitin K.; Basu, Nandita B.
发表日期	2022
ISSN	2398-9629
起始页码	397
结束页码	405
卷号	5 期号:5 页码:9
英文摘要	There is considerable debate on the effect that humans have on streamflow. While annual streamflow trends are driven predominantly by climate, human activity works to both amplify and dampen the seasonal trends of managed streamflows across North America. While it is established that climate change and human activities (for example, urbanization, dams) alter streamflows, there exists considerable uncertainty regarding the relative magnitude of their contributions. Most studies have focused on annual flows and found trends to be dominated by climate. Here we compare trends in seasonal flow totals for 315 natural and 1,957 managed watersheds across North America over 60 years (1950-2009). We find an amplification of seasonal flow trends in 44% of the managed watersheds, while 48% of the watersheds exhibit flow dampening. The magnitudes of amplification (20-167%) and dampening (5-52%) are substantial and vary seasonally. Multivariate models reveal that while rainfall, slope and forest cover are the key drivers of seasonal trends in natural watersheds, canals, impervious areas and dam storage dominate the responses in managed watersheds. Our findings of human-driven seasonal flow alterations highlight the need to develop adaptation strategies that mitigate the associated negative impacts.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000761867500002
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/272838
作者单位	University of Waterloo; University of Waterloo; University of Waterloo
推荐引用方式 GB/T 7714	Singh, Nitin K.,Basu, Nandita B.. The human factor in seasonal streamflows across natural and managed watersheds of North America[J],2022,5(5):9.
APA	Singh, Nitin K.,&Basu, Nandita B..(2022).The human factor in seasonal streamflows across natural and managed watersheds of North America.NATURE SUSTAINABILITY,5(5),9.
MLA	Singh, Nitin K.,et al."The human factor in seasonal streamflows across natural and managed watersheds of North America".NATURE SUSTAINABILITY 5.5(2022):9.