Non-point Source Analysis of Laixi River Basin in Luxian County Based on Output Coefficient Model | 基于输出系数模型濑溪河流域泸县段面源分析
2013
Ma Yali, Sichuan University, Chengdu(China),College of Water Resources and Hydropower | Ao Tianqi, Sichuan University, Chengdu(China),College of Water Resources and Hydropower | Zhang Hongbo, Sichuan University, Chengdu(China),College of Water Resources and Hydropower
chinois. 【目的】在前人研究的基础上，对长江流域等热点研究区域的污染物输出系数值进行总结，估算出濑溪河流域泸县段的TN、TP的污染负荷。【方法】利用输出系数模型的方法。【结果】结果表明，濑溪河泸县段非点源TN负荷量为3701.54 t？a-1、TP负荷量为688.72 t？a-1，其中农田径流污染、农村生活污染及畜禽养殖污染对非点源TN、TP的贡献率较大，农田径流污染为TN的主要来源，畜禽养殖污染为TP的主要来源，且TN负荷量远大于TP负荷量。【结论】非点源污染是影响濑溪河泸县段水环境质量的一个重要方面，应该引起足够重视，并采取相应措施。
Afficher plus [+] Moins [-]anglais. 【Objective】The objective of this study was to calculate the load of the non-point source total nitrogen （TN） and total phosphorus （TP） in LAI Xi-River Basin（Lu-Xian section）.【Method】Output coefficient model was used to calculate the TN and TP load.【Results】The load of TN and TP from non-point pollution source equal 3701.54 t？a-1 and 688.72 t？a-1,respectively. Agricultural fertilizer pollution,the rural domestic pollution and livestock pollution make a main proportion.Agricultural fertilizer pollution and livestock pollution are the main sources for TN and TP,respectively.TN load is much more than the TP load.【Conclusions】Non-point source pollution is an important aspect for the water quality in LAI Xi-River Basin（Lu-Xian section） Therefore, it should be pay sufficient attention and take appropriate measures.
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