| 葛怀凤,秦大庸,周祖昊,桑学锋.基于污染迁移转化过程的海河干流天津段污染关键源区及污染类别分析[J].水利学报,2011,42(1): |
| 基于污染迁移转化过程的海河干流天津段污染关键源区及污染类别分析 |
| Analysis of key source areas and pollution type in the lower Haihe Riverbased on pollution loading movement and transformation |
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| DOI： |
| 中文关键词: 海河下游 天津市 SWAT模型 多源负荷 关键源区 关键负荷 |
| 英文关键词: Haihe River Tianjin SWAT model multi-source pollution loadings key source areas criti?
cal pollution |
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| 中文摘要: |
| 针对海河流域严重的水环境问题，利用1995—2004年系列数据构建SWAT模型水质模块，率定期和验证期的纳什系数分别为0.70和0.55。依据构建的模型进行污染负荷的时空变化规律分析和关键源区识别，同时计算各类型污染对研究区域和关键源区的贡献率。结果显示：污染负荷与径流量的变化具有很好的一致性；负荷关键源区分布为天津市区西南部和东北部、西青东部、东丽东部、津南和塘沽北部；城镇径流非点源污染负荷对海河流域的贡献率是最高的，达38.6%；其次是点源污染，达31.1%；关键源区中，市区和西青关键源区的关键负荷类 |
| 英文摘要: |
| This paper studies the serious water environment problems of the Haihe River Basin. Water quali?ty module of SWAT model was established according to the data from 1995 to 2004，and the Nash-Sut?cliffe efficiency values in calibration and validation are 0.70，0.55，respectively. Based on the computation and simulation of SWAT model，temporal and spatial distribution of pollution loadings were analyzed，the key source areas were identified and the pollution loading contributions for studying key source areas were also computed. The results show that there is a good correlation between pollution loadings and surface
flow. The key source areas are southwest and northeast of the urban district，east of Xiqing and Dongli，north of Jinnan and Tanggu. The urban runoff non-point pollution is the highest in pollution loadings contribution which is 38.6% the next is point pollution which is 31.1%. |
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