Sources and Pathways of Nutrients in the Semi-Arid Region of Beijing Tianjin, China
文献类型：期刊论文
| 作者 | Pernet-Coudrier, Benoit ; Qi, Weixiao ; Liu, Huijuan ; Mueller, Beat ; Berg, Michael |
| 刊名 | Engineering; Environmental Sciences & Ecology
 |
| 出版日期 | 2012 |
| 卷号 | 46期号:10页码:5294-5301 |
| ISSN号 | 0013-936X |
| 中文摘要 | Semiarid regions worldwide are particularly prone to eutrophication, which causes immense ecological and economic problems. One region that is in transition and requires systematic research for effective intervention is the dry landscape of Beijing-Tianjin (P. R. China). We investigated the sources and spatiotemporal loads of nitrogen and phosphorus species over a one-year period in the Haihe catchment that drains the megacity of Beijing. Although wastewater treatment was improved in recent years, the rivers were heavily contaminated by 0.3-5.3 mgP L-1 and 3.0-49 mgN L-1, with toxic levels of nitrite (>= 1 mgNO(2)-N L-1) and ammonia (>= 0.6 mgNH(3)-N L-1). The average NH4+ (16.9 mgN L-1) increased by 160% compared to 1996-levels. Mass fluxes and delta N-15-signatures revealed that nutrients originated almost exclusively from sewage. Furthermore, the water balance demonstrated that >90% of the polluted river water was diverted for irrigation, thereby threatening food safety and groundwater quality. Per capita loads of 1.42 kgN/yr and 115 gP/yr were comparable to the peak discharges typical of Europe and the United States in 1970-1990, but concentrations were 2-3 times higher in the Beijing-Tianjin region. Our research identified sewage as the predominant nutrient source in this semiarid region, which suggests that state-of-the-art wastewater treatment would drastically mitigate eutrophication and even more rapidly than was previously observed in Europe. |
| WOS记录号 | WOS:000303964700009 |
| 公开日期 | 2014-11-28 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/8173]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Pernet-Coudrier, Benoit,Qi, Weixiao,Liu, Huijuan,et al. Sources and Pathways of Nutrients in the Semi-Arid Region of Beijing Tianjin, China[J]. Engineering; Environmental Sciences & Ecology,2012,46(10):5294-5301. |
| APA | Pernet-Coudrier, Benoit,Qi, Weixiao,Liu, Huijuan,Mueller, Beat,&Berg, Michael.(2012).Sources and Pathways of Nutrients in the Semi-Arid Region of Beijing Tianjin, China.Engineering; Environmental Sciences & Ecology,46(10),5294-5301. |
| MLA | Pernet-Coudrier, Benoit,et al."Sources and Pathways of Nutrients in the Semi-Arid Region of Beijing Tianjin, China".Engineering; Environmental Sciences & Ecology 46.10(2012):5294-5301. |
入库方式： OAI收割
来源：生态环境研究中心
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