globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-017-0315-z
Scopus记录号: 2-s2.0-85014784570
论文题名:
Weather whiplash in agricultural regions drives deterioration of water quality
作者: Loecke T.D.; Burgin A.J.; Riveros-Iregui D.A.; Ward A.S.; Thomas S.A.; Davis C.A.; Clair M.A.S.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 133, 期:1
起始页码: 7
结束页码: 15
语种: 英语
英文关键词: Agriculture ; Climate variability ; Nitrate ; Water quality
英文摘要: Excess nitrogen (N) impairs inland water quality and creates hypoxia in coastal ecosystems. Agriculture is the primary source of N; agricultural management and hydrology together control aquatic ecosystem N loading. Future N loading will be determined by how agriculture and hydrology intersect with climate change, yet the interactions between changing climate and water quality remain poorly understood. Here, we show that changing precipitation patterns, resulting from climate change, interact with agricultural land use to deteriorate water quality. We focus on the 2012–2013 Midwestern U.S. drought as a “natural experiment”. The transition from drought conditions in 2012 to a wet spring in 2013 was abrupt; the media dubbed this “weather whiplash”. We use recent (2010–2015) and historical data (1950–2015) to connect weather whiplash (drought-to-flood transitions) to increases in riverine N loads and concentrations. The drought likely created highly N-enriched soils; this excess N mobilized during heavy spring rains (2013), resulting in a 34% increase (10.5 vs. 7.8 mg N L−1) in the flow-weighted mean annual nitrate concentration compared to recent years. Furthermore, we show that climate change will likely intensify weather whiplash. Increased weather whiplash will, in part, increase the frequency of riverine N exceeding E.P.A. drinking water standards. Thus, our observations suggest increased climatic variation will amplify negative trends in water quality in a region already grappling with severe impairments. © 2017, The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83291
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Kansas Biological Survey and Department of Environmental Studies, University of Kansas, 2101 Constant Dr, Lawrence, KS, United States; Department of Ecology and Evolutionary Biology, University of Kansas, 2101 Constant Dr, Lawrence, KS, United States; Department of Geography, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States; School of Public and Environmental Affairs, Indiana University, Bloomington, IN, United States; School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, United States; University of Iowa – Lucille A. Carver Mississippi Riverside Environmental Research Station and IIHR Hydroscience & Engineering, University of Iowa, Muscatine, IA, United States; Department of Chemistry, Coe College, Cedar Rapids, IA, United States

Recommended Citation:
Loecke T.D.,Burgin A.J.,Riveros-Iregui D.A.,et al. Weather whiplash in agricultural regions drives deterioration of water quality[J]. Biogeochemistry,2017-01-01,133(1)
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