期刊
ENVIRONMENTAL POLLUTION
卷 173, 期 -, 页码 138-149出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2012.10.004
关键词
Point source; Non-point source; Reclaimed water; Septic systems; Wastewater treatment facilities; Isotopic analyses; Stormwater
资金
- Scotts Miracle-Gro, Marysville, Ohio
- University of Florida, Institute of Food and Agricultural Science
- University of New Hampshire Agricultural Experiment Station
This literature review focuses on the prevalence of nitrogen and phosphorus in urban environments and the complex relationships between land use and water quality. Extensive research in urban watersheds has broadened our knowledge about point and non-point pollutant sources, but the fate of nutrients is not completely understood. For example, it is not known how long-term nutrient cycling processes in turfgrass landscapes influence nitrogen retention rates or the relative atmospheric contribution to urban nitrogen exports. The effect of prolonged reclaimed water irrigation is also unknown. Stable isotopes have been used to trace pollutants, but distinguishing sources (e.g., fertilizers, wastewater, etc.) can be difficult. Identifying pollutant sources may aid our understanding of harmful algal blooms because the extent of the relationship between urban nutrient sources and algal blooms is unclear. Further research on the delivery and fate of nutrients within urban watersheds is needed to address manageable water quality impacts. (C) 2012 Elsevier Ltd. All rights reserved.
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