| 红壤丘陵区典型区域湖南长沙市非点源污染量化研究 |
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| 引用本文： | 方勇,李忠武,李裕元,曾光明,张棋.红壤丘陵区典型区域湖南长沙市非点源污染量化研究[J].土壤通报,2010(2). |
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| 作者姓名： | 方勇 李忠武 李裕元 曾光明 张棋 |
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| 作者单位： | 湖南大学环境科学与工程学院;中国科学院亚热带农业生态研究所; |
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| 基金项目： | 国家863高技术项目(2007AA10Z222); 中国科学知识创新工程领域前沿项目(0651054040); 国家杰出人才基金项目(5025927)资助 |
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| 摘 要： | 结合通用土壤流失方程(USLE)和USEPA开发的PLOAD方程,建立非点源污染计算模型,采用GIS技术及野外实验确定模型中各个因子,并将该模型用于长沙市的非点源氮、磷污染负荷的计算。研究结果表明:长沙市地区非点源氮、磷污染负荷分别为9.9kghm-2a-1,1.49kghm-2a-1,其中氮污染主要以溶解态氮的形式存在,与降雨过程中产生的地表径流密切相关;污染来源最大的区域是城市用地区域,该区域的下垫面不透水率大,降雨过程中产生地表径流大;磷污染主要以吸附态磷的形式存在,来源较大的区域主要为坡度大、易发生水土流失的区域。
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| 关 键 词： | 非点源污染 长沙市 红壤丘陵区 地理信息系统 |
The Quantitative Research on Non-point Source Pollution Based on GIS in Changsha City of Hunan Province for Red Soil Hilly Region |
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| FANG Yong ,LI Zhong-wu ,LI Yu-yuan ,ZENG Guang-ming,ZHANG Qi.The Quantitative Research on Non-point Source Pollution Based on GIS in Changsha City of Hunan Province for Red Soil Hilly Region[J].Chinese Journal of Soil Science,2010(2). |
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| Authors: | FANG Yong LI Zhong-wu LI Yu-yuan ZENG Guang-ming ZHANG Qi |
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| Institution: | FANG Yong 1,LI Zhong-wu 1,LI Yu-yuan 2,ZENG Guang-ming1,ZHANG Qi1(1.College of Environmental Science , Engineering,Hunan University,Changsha,410082,China,2.Institute of Subtropical Agriculture,The Chinese Academy of Sciences,410125,China) |
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| Abstract: | Combining Universal Soil Loss Equation(USLE) with the PLOAD equation developed by USEPA,non-point source pollution model was build.The model was applied to calculate the non-point source pollution of nitrogen and phosphorus in Changsha city.The model parameters were defined by means of GIS technology and experiment measure.The result showed that the non-point source pollution of nitrogen and phosphorus in Changsha city were 9.9 kg hm-2 a-1 and 1.49 kg hm-2 a-1,respectively.The non-point source pollution of ... |
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| Keywords: | Non-point source pollution Changsha City Red Soil Hilly Region Geographic information system |
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