Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024009 |
Phosphorus Transport in Intensively Managed Watersheds | |
Dolph, Christine L.1; Boardman, Evelyn2; Danesh-Yazdi, Mohammad3; Finlay, Jacques C.1; Hansen, Amy T.4; Baker, Anna C.5; Dalzell, Brent6 | |
2019-11-16 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA; Iran |
英文摘要 | Understanding controls of P movement through watersheds are essential for improved landscape management in intensively managed regions. Here, we analyze observational data from 104 gaged river sites and 176 nongaged river sites within agriculturally dominated watersheds of Minnesota, USA, to understand the role of landscape features, land use practices, climate variability, and biogeochemical processes in total, dissolved and particulate P dynamics at daily to annual scales. Our analyses demonstrate that factors mediating P concentration-discharge relationships varied greatly across watersheds and included near-channel sediment sources, lake and wetland interception, assimilation by algal P, and artificial land drainage. The majority of gaged sites exhibited mobilizing behavior for all forms of P at event (i.e., daily) timescales and chemostatic behavior at annual timescales. The large majority of watershed P export (>70%, on average) occurred during high flow conditions, suggesting that more frequent large storm events arising from climate change will drive increased P losses from agricultural watersheds without substantial management changes. We found that P export could be dominated by dissolved P, particulate P, or an even mix of the two forms, depending on watershed attributes. Implementation of management practices to control P losses must be guided by understanding of how local landscapes interact with current and future climate conditions. Managing for both dissolved and particulate P is required to reduce overall P load in many agricultural watersheds. |
英文关键词 | nutrients hydrology climate pollutants eutrophication agriculture |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496649700001 |
WOS关键词 | CONCENTRATION-DISCHARGE RELATIONSHIPS ; RIVER-BASIN ; ANTHROPOGENIC PHOSPHORUS ; AGRICULTURAL WATERSHEDS ; UNINTENDED CONSEQUENCES ; MISSISSIPPI RIVER ; SEDIMENT LOADS ; NUTRIENT ; NITRATE ; EUTROPHICATION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/223903 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Minnesota, Dept Ecol & Evolut Biol, St Paul, MN 55108 USA; 2.Fitzgerald Environm Associates LLC, Colchester, VT USA; 3.Sharif Univ Technol, Dept Civil Engn, Tehran, Iran; 4.Univ Kansas, Dept Civil Environm & Architectural Engn, Lawrence, KS 66045 USA; 5.Univ Minnesota, Water Resources Sci Program, St Paul, MN 55108 USA; 6.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA |
推荐引用方式 GB/T 7714 | Dolph, Christine L.,Boardman, Evelyn,Danesh-Yazdi, Mohammad,et al. Phosphorus Transport in Intensively Managed Watersheds[J]. WATER RESOURCES RESEARCH,2019. |
APA | Dolph, Christine L..,Boardman, Evelyn.,Danesh-Yazdi, Mohammad.,Finlay, Jacques C..,Hansen, Amy T..,...&Dalzell, Brent.(2019).Phosphorus Transport in Intensively Managed Watersheds.WATER RESOURCES RESEARCH. |
MLA | Dolph, Christine L.,et al."Phosphorus Transport in Intensively Managed Watersheds".WATER RESOURCES RESEARCH (2019). |
条目包含的文件 | 条目无相关文件。 |
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