Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1618536114 |
Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution | |
Hobbie, Sarah E.1; Finlay, Jacques C.1; Janke, Benjamin D.1; Nidzgorski, Daniel A.1; Millet, Dylan B.2; Baker, Lawrence A.3 | |
2017-04-18 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:16页码:4177-4182 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Managing excess nutrients remains a major obstacle to improving ecosystem service benefits of urban waters. To inform more ecologically based landscape nutrient management, we compared watershed inputs, outputs, and retention for nitrogen (N) and phosphorus (P) in seven subwatersheds of the Mississippi River in St. Paul, Minnesota. Lawn fertilizer and pet waste dominated N and P inputs, respectively, underscoring the importance of household actions in influencing urban watershed nutrient budgets. Watersheds retained only 22% of net P inputs versus 80% of net N inputs (watershed area-weighted averages, where net inputs equal inputs minus biomass removal) despite relatively low P inputs. In contrast to many nonurban watersheds that exhibit high P retention, these urban watersheds have high street density that enhanced transport of P-rich materials from landscapes to stormwater. High P exports in storm drainage networks and yard waste resulted in net P losses in some watersheds. Comparisons of the N/P stoichiometry of net inputs versus storm drain exports implicated denitrification or leaching to groundwater as a likely fate for retained N. Thus, these urban watersheds exported high quantities of N and P, but via contrasting pathways: P was exported primarily via stormwater runoff, contributing to surface water degradation, whereas N losses additionally contribute to groundwater pollution. Consequently, N management and P management require different strategies, with N management focusing on reducing watershed inputs and P management also focusing on reducing P movement from vegetated landscapes to streets and storm drains. |
英文关键词 | eutrophication nitrogen phosphorus stormwater urban watershed |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000399387400058 |
WOS关键词 | DENITRIFICATION ; EUTROPHICATION ; RETENTION ; DEPOSITION ; KNOWLEDGE ; REMOVAL ; BALANCE ; MODELS ; FLUXES ; INPUTS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/204692 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA; 2.Univ Minnesota, Dept Soil Water & Climate, St Paul, MN 55108 USA; 3.Univ Minnesota, Dept Bioprod & Biosyst Engn, St Paul, MN 55108 USA |
推荐引用方式 GB/T 7714 | Hobbie, Sarah E.,Finlay, Jacques C.,Janke, Benjamin D.,et al. Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(16):4177-4182. |
APA | Hobbie, Sarah E.,Finlay, Jacques C.,Janke, Benjamin D.,Nidzgorski, Daniel A.,Millet, Dylan B.,&Baker, Lawrence A..(2017).Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(16),4177-4182. |
MLA | Hobbie, Sarah E.,et al."Contrasting nitrogen and phosphorus budgets in urban watersheds and implications for managing urban water pollution".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.16(2017):4177-4182. |
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