气候变化领域集成服务门户(CCPortal): Spatial Patterns and Drivers of Nonperennial Flow Regimes in the Contiguous United States

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DOI	10.1029/2020GL090794
	Spatial Patterns and Drivers of Nonperennial Flow Regimes in the Contiguous United States
	Hammond J.C.; Zimmer M.; Shanafield M.; Kaiser K.; Godsey S.E.; Mims M.C.; Zipper S.C.; Burrows R.M.; Kampf S.K.; Dodds W.; Jones C.N.; Krabbenhoft C.A.; Boersma K.S.; Datry T.; Olden J.D.; Allen G.H.; Price A.N.; Costigan K.; Hale R.; Ward A.S.; Allen D.C.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:2
英文摘要	Over half of global rivers and streams lack perennial flow, and understanding the distribution and drivers of their flow regimes is critical for understanding their hydrologic, biogeochemical, and ecological functions. We analyzed nonperennial flow regimes using 540 U.S. Geological Survey watersheds across the contiguous United States from 1979 to 2018. Multivariate analyses revealed regional differences in no-flow fraction, date of first no flow, and duration of the dry-down period, with further divergence between natural and human-altered watersheds. Aridity was a primary driver of no-flow metrics at the continental scale, while unique combinations of climatic, physiographic and anthropogenic drivers emerged at regional scales. Dry-down duration showed stronger associations with nonclimate drivers compared to no-flow fraction and timing. Although the sparse distribution of nonperennial gages limits our understanding of such streams, the watersheds examined here suggest the important role of aridity and land cover change in modulating future stream drying. © 2020. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Multivariant analysis; Continental scale; Ecological functions; Land-cover change; Multi variate analysis; Regional differences; Rivers and streams; Sparse distribution; U.s. geological surveys; Watersheds
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169211
作者单位	U.S. Geological Survey MD-DE-DC Water Science Center, Baltimore, MD, United States; Earth and Planetary Sciences, University of California, Santa Cruz, Santa Cruz, CA, United States; College of Science and Engineering, Flinders University, Adelaide, Australia; Geosciences Department, Boise State University, Boise, ID, United States; Department of Geosciences, Idaho State University, Pocatello, ID, United States; Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States; Kansas Geological Survey, University of Kansas, Lawrence, KS, United States; School of Ecosystem and Forest Sciences, The University of Melbourne, Burnley CampusVIC, Australia; Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, United States; Division of Biology, Kansas State University, Manhattan, KS, United States; Department of Biological Sciences, University of Alabama, Tuscaloosa, AL, United States; College of Arts and Sciences and Research and Education in Energy, En...
推荐引用方式 GB/T 7714	Hammond J.C.,Zimmer M.,Shanafield M.,et al. Spatial Patterns and Drivers of Nonperennial Flow Regimes in the Contiguous United States[J],2021,48(2).
APA	Hammond J.C..,Zimmer M..,Shanafield M..,Kaiser K..,Godsey S.E..,...&Allen D.C..(2021).Spatial Patterns and Drivers of Nonperennial Flow Regimes in the Contiguous United States.Geophysical Research Letters,48(2).
MLA	Hammond J.C.,et al."Spatial Patterns and Drivers of Nonperennial Flow Regimes in the Contiguous United States".Geophysical Research Letters 48.2(2021).