Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR023006 |
Modeling Runoff and Nitrogen Loads From a Watershed at Different Levels of Impervious Surface Coverage and Connectivity to Storm Water Control Measures | |
Bell, Colin D.1; Tague, Christina L.2; McMillan, Sara K.3 | |
2019-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:4页码:2690-2707 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Urban development of watersheds increases runoff and nitrogen loads by adding urban impervious surfaces and increasing the hydrologic connectivity of these surfaces to streams. Storm water control measures (SCMs) are designed to disrupt this connectivity by retaining water in biologically active depressions where nitrogen retention, transformation, and removal occur. This work applies a mechanistic, spatially distributed, hydroecological model (RHESSys) to a suburban watershed in Charlotte, NC, with 15% total imperviousness (TI) and 33% watershed area mitigated by SCMs. We developed emergent relationships between watershed-scale predictors (TI and connectivity to SCMs) and water and nitrogen response variables (storm water runoff ratios and nitrogen load by species). Results showed that annual runoff ratios were insensitive to increases in connectivity to SCMs (varying by similar to 1% of rainfall) because SCMs did not substantially increase evaporation but that runoff ratios increased by an average 0.2% per 1% increase in TI due to decreases in transpiration in the watershed. Generally, nitrate loads increased with TI but decreased as more surfaces were mitigated by SCMs. However, these nitrate reductions corresponded to increased export of dissolved organic nitrogen and ammonium. Together, these results indicate that SCMs act as both removers and transformers of nitrogen at the watershed scale. SCMs showed a net assimilation of nitrogen in warm months and net release in cool months, which offset the timing of nitrogen export relative to inputs. This work highlights that using a hydroecological, process-based model reveals both the emergent relationships between watershed condition and response and the processes controlling those relationships. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000468597900008 |
WOS关键词 | POLLUTANT REMOVAL EFFICACY ; LOW IMPACT ; GREEN INFRASTRUCTURE ; MANAGEMENT-PRACTICES ; CONSTRUCTED WETLAND ; GENERALIZED-MODEL ; LAND-USE ; URBAN ; STREAM ; HYDROLOGY |
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/182213 |
专题 | 资源环境科学 |
作者单位 | 1.Colorado Sch Mines, Dept Civil & Environm Engn, Golden, CO 80401 USA; 2.Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA; 3.Purdue Univ, Dept Agr & Biol Engn, W Lafayette, IN 47907 USA |
推荐引用方式 GB/T 7714 | Bell, Colin D.,Tague, Christina L.,McMillan, Sara K.. Modeling Runoff and Nitrogen Loads From a Watershed at Different Levels of Impervious Surface Coverage and Connectivity to Storm Water Control Measures[J]. WATER RESOURCES RESEARCH,2019,55(4):2690-2707. |
APA | Bell, Colin D.,Tague, Christina L.,&McMillan, Sara K..(2019).Modeling Runoff and Nitrogen Loads From a Watershed at Different Levels of Impervious Surface Coverage and Connectivity to Storm Water Control Measures.WATER RESOURCES RESEARCH,55(4),2690-2707. |
MLA | Bell, Colin D.,et al."Modeling Runoff and Nitrogen Loads From a Watershed at Different Levels of Impervious Surface Coverage and Connectivity to Storm Water Control Measures".WATER RESOURCES RESEARCH 55.4(2019):2690-2707. |
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