Identification of critical source areas for non-point source pollution in Miyun reservoir watershed near Beijing, China
Copyright (c) IWA Publishing 2008.
| Veröffentlicht in: | Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 58(2008), 11 vom: 01., Seite 2235-41 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2008
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| Zugriff auf das übergeordnete Werk: | Water science and technology : a journal of the International Association on Water Pollution Research |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Phosphorus 27YLU75U4W |
| Zusammenfassung: | Copyright (c) IWA Publishing 2008. Miyun Reservoir is the major water source for Bijing, China. Currently, the water quality of Miyun reservoir is meso-trophic, mainly due to the non-point source pollution (NPS) in the watershed. Phosphorus (P) is the limited factor. In this paper, Chaohe River basin, upstream of the Miyun Reservoir, is chosen as the study area, A modified P Index was developed to identify critical source areas (CSAs) of non-point source pollution by analyzing local hydrological and meteorological data, land use, soil, soil conservation, farmland management, population density, and livestock. The factors of livestock and population density are new factors added to the P Index system based on the actual local characteristics. It was found that the loss P from high-risk area accounts for only 7.95%. These areas are located mainly along streams. Livestock factor and the population density factor are most closely related to the CSAs downstream of Chaohe River basin. The management strategies are outlined according to the distribution characteristics of the critical source areas |
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| Beschreibung: | Date Completed 06.03.2009 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
| ISSN: | 0273-1223 |
| DOI: | 10.2166/wst.2008.831 |