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Analysis of deviation feature of non-point source pollution in Yantai City based on the land use change
Authors
吴晓青
崔秀平
+3 more
杨婧
郭玲玲
马金卫
Publication date
1 January 2012
Publisher
Abstract
海岸带陆源非点源污染是导致入海河流污染和近海富营养化的重要因素之一。本研究应用长期水文影响评价模型(L-THIA),结合GIS空间分析技术,定量化模拟和分析了20年来烟台市区土地利用变化导致的年均地表年径流量和非点源污染物(TN、TP)负荷变化的时空差异性。结果表明:耕地的流失使得研究区非点源污染总负荷下降,耕地向建设用地的转换带来的不透水面扩大是引起近岸带产流增加以及非点源污染负荷高于远岸带的重要原因; 研究区水文效应明显区和非点源负荷变化区与城镇扩展格局具有较好的一致性。  
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Last time updated on 18/09/2018