| 三峡库区大宁河流域非点源污染输出风险分析 |
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| 引用本文： | 田甜,刘瑞民,王秀娟,况亮,秦玮.三峡库区大宁河流域非点源污染输出风险分析[J].环境科学与技术,2011,34(6):185-190. |
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| 作者姓名： | 田甜 刘瑞民 王秀娟 况亮 秦玮 |
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| 作者单位： | 北京师范大学环境学院,水环境国家重点实验室,北京100875 |
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| 基金项目： | 环保总局公益项目(200709024) |
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| 摘 要： | 在国内外相关研究的基础上,利用随机模拟法,结合GIS技术,对三峡库区大宁河流域非点源污染输出风险进行评估,并探讨不同土地利用/覆盖变化对流域非点源污染输出风险的影响.结果表明,大宁河流域非点源污染输出风险的概率较小,氮素1980年和2000年的输出风险平均值为24.5%和24.4%,磷素1980年和2000年的输出风险...
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| 关 键 词： | 随机模拟法 输出系数 风险分析 非点源污染 |
Risk Assessment of Nitrogen and Phosphorus Export in Daning River of Three Gorges Reservoir Area |
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| TIAN Tian,LIU Rui-min,WANG Xiu-juan,KUANG Liang,QIN Wei.Risk Assessment of Nitrogen and Phosphorus Export in Daning River of Three Gorges Reservoir Area[J].Environmental Science and Technology,2011,34(6):185-190. |
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| Authors: | TIAN Tian LIU Rui-min WANG Xiu-juan KUANG Liang QIN Wei |
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| Institution: | TIAN Tian,LIU Rui-min*,WANG Xiu-juan,KUANG Liang,QIN Wei(State Key Laboratory of Water Environment Simulation,School of Environment,Beijing Normal University,Beijing 100875,China) |
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| Abstract: | Based on related researches,random simulation method combined with GIS was used to assess export risk of non-point source pollution of Daning River in Three Gorges Reservoir area.It was found that land cover composition across a watershed is a dominant factor in controlling the amount of nitrogen and phosphorus exported from a watershed.A well developed literature of nutrient export coefficients by land-cover class was used to model the risk of equaling or exceeding specified levels of nutrient export in dr... |
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| Keywords: | random simulation method export coefficient risk assessment non-point source pollution |
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