AnnAGNPS非点源污染模型参数敏感性分析
首发时间:2009-06-25
摘要:非点源污染模型参数的不确定性直接影响模型模拟的准确性,本文以苏南丘陵地区句容市赤山湖汇水流域为研究对象,利用GIS和AnnAGNPS模型,运用摩尔斯法对选取的降雨侵蚀力、降雨径流、SCS-CN曲线数、曼宁糙率系数、水土保持因子、化肥施用量、氮磷吸收率、土壤侵蚀因子及饱和导水率9个参数进行敏感性分析。模拟结果得出降雨径流、SCS-CN曲线数为显著敏感性参数,氮磷营养盐负荷量对各参数敏感性有所差异。
关键词: AnnAGNPS模型 敏感性 摩尔斯法
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The Parameters Sensitivity Analysis of AnnAGNPs Non-point Pollution Model
Abstract:The uncertainty of non-point source pollution model parameters directly affects the accuracy of simulation results. In this article, Chishan Lake basin in Jurong City ,a hilly areas in southern Jiangsu as the study ares, with the use of GIS and AnnAGNPs model,Morris Code is the method to analysis the uncertainty of 9 selected sensitive parameters: rainfall erosion, rainfall runoff, SCS-CN curve number, Manning roughness coefficient, soil and water conservation factors, fertilizer application rate, nitrogen and phosphorus absorption rate, soil erosion factor, and saturated hydraulic conductivity .The result shows rainfall-runoff and SCS-CN curve number are significant sensitivity parameters, and nitrogen and phosphorus nutrient load have the different sensitivity of the parameters.
Keywords: AnnAGNPs model Sensitivity Morris code
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No.3340948239412458****
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