| 南水北调中线工程水源区老鹳河流域农业非点源污染关键源区识别 |
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| 引用本文： | 王光谦,左海凤,魏加华,黄跃飞.南水北调中线工程水源区老鹳河流域农业非点源污染关键源区识别[J].地学前缘,2010,17(6):13-20. |
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| 作者姓名： | 王光谦 左海凤 魏加华 黄跃飞 |
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| 作者单位： | 1清华大学 水沙科学与水利水电工程国家重点实验室, 北京 100084;
2北京中水新华国际工程咨询有限公司, 北京 100044 |
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| 摘 要： | 识别关键源区可以为非点源污染的优先管理和控制提供决策依据。本次研究以南水北调中线工程水源区老鹳河流域为研究区,比较全面地考虑了氮磷流失的主要影响因素,建立了老鹳河流域农业非点源污染关键源区识别模型,进行流域农业非点源污染风险评价和污染关键源区识别。结果表明,流域内处于高风险区以上的地区占流域总面积的13.4%,主要分布于老鹳河中上游地区,相对集中分布于老鹳河干流及其支流沿河地区,零星分布于西峡境内东部和北部局部,为该流域地表水环境农业非点源污染的关键源区。其中,污染风险最高的区域只占流域总面积的3.75%,可划定为重点关键源区进行重点治理,同时应兼顾污染风险次之的区域。基于GIS的指标体系法能够快速而方便地识别流域非点源污染高风险区域并量化污染风险大小,从宏观上掌握非点源污染的空间分布特征并实施有效管理和治理。
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| 关 键 词： | 南水北调中线工程 非点源污染 关键源区 |
Identifying critical source areas for agricultural non-point source pollution in Laoguanhe Watershed of Middle Route of the South-to-North Water Diversion Project |
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| Wang Guangqian,Zuo Haifeng,Wei Jiahua,Huang Yuefei.Identifying critical source areas for agricultural non-point source pollution in Laoguanhe Watershed of Middle Route of the South-to-North Water Diversion Project[J].Earth Science Frontiers,2010,17(6):13-20. |
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| Authors: | Wang Guangqian Zuo Haifeng Wei Jiahua Huang Yuefei |
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| Institution: | 1State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084, China;
2China Water International Engineering Consulting Company Limited, Beijing 100044, China |
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| Abstract: | It is the decision basis for management and control of non-point source pollution that to identify the critical source areas in a watershed.In this paper,taking the Laoguanhe watershed of Middle Route of the South-to-North Water Diversion(SNWDP) as the case,an identification model of critical source areas for agriculture non-point source pollution in Laoguanhe watershed has been developed in order to evaluate the risk of pollution loss.The results indicate that the high risk areas account for 13.4% of total... |
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| Keywords: | Middle Route of the South-to-North Water Diversion Project non-point source pollution critical source areas |
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