Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/34175
DC FieldValueLanguage
dc.contributor.advisorLi-Ling Linen_US
dc.contributor.advisor林俐玲zh_TW
dc.contributor.author馮美禎zh_TW
dc.contributor.authorFeng, Mei-Chenen_US
dc.date2002zh_TW
dc.date.accessioned2014-06-06T07:47:18Z-
dc.date.available2014-06-06T07:47:18Z-
dc.identifier.urihttp://hdl.handle.net/11455/34175-
dc.description.abstract本研究係運用農業非點源污染模式對不同集水區進行逕流量、土壤沖蝕量、泥砂遞移率之推估,進而探討AGNPS模式中各輸入因子如降雨量、降雨沖蝕指數、土壤沖蝕因子、曼寧粗糙係數、植物覆蓋因子、逕流曲線值等對集水區泥砂遞移率之敏感度。經分析結果得知,降雨量、逕流曲線值與泥砂遞移率之關係成正比,降雨沖蝕指數、曼寧粗糙係數、土壤沖蝕因子、植生覆蓋因子與泥砂遞移率之關係成反比,地表狀況常數不影響泥砂遞移率;而影響集水區泥砂遞移率之敏感度因子依序為曼寧粗糙係數最大、降雨沖蝕指數和土壤沖蝕因子及植生覆蓋因子次之、降雨量再次之、逕流曲線值最小。 由此結論,以後應用農業非點源污染模式在收集集水區之輸入因子時,對敏感因子之求取應力求精確,方可得到較正確的推估值。而開發集水區時應自各敏感因子著手,以減少集水區土壤沖蝕發生,增加集水區之水源涵養及永續經營利用。zh_TW
dc.description.abstractAgricultural non-point source pollution model (AGNPS) was applied to predict the runoff, soil erosion, sediment delivery ratio, and sediment yield of various watersheds. Furthermore, the input parameters, such as rainfall amount, rainfall erosivity, soil erodibility, Mannings roughness coefficient, vegetative cover factor, and curve number (CN) were selected to analyze their sensitivity to the sediment delivery ratio. The results indicated that rainfall amount and curve number were directly related to sediment delivery ratio. On the contrary, rainfall erosivity, Mannings roughness coefficient, soil erodibility, and vegetative cover factor were inversely related to sediment delivery ratio. The soil surface cover factor was not sensitive to sediment delivery ratio. The sensitive ranking of these parameters are Mannings coefficient, rainfall erosivity, soil erodibility, vegetative cover factor, rainfall amount, and curve number. AGNPS can be applied as planning tool for watershed management However, the sensitive input parameters must be assessed carefully in order to obtain reasonable results.en_US
dc.description.tableofcontents壹、前言 貳、前人研究 一、土壤沖蝕研究之演進 二、泥砂遞移率之相關研究 三、國內有關土壤沖蝕推估模式應用之研究 四、其他相關之土壤沖蝕推估模式 五、農業非點源污染模式(AGNPS)之簡介 參、研究試區與方法 一、研究試區介紹 二、研究項目與方法 肆、結果與討論 一、土壤物理性質分析結果 二、土壤沖蝕指數(K值)之計算結果 三、各集水區之地文特性 四、各集水區AGNPS模式推估結果與分析 五、AGNPS模式敏感因子之分析 伍、結論 陸、參考文獻zh_TW
dc.language.isoen_USzh_TW
dc.publisher水土保持學系zh_TW
dc.subjectAGNPSen_US
dc.subject農業非點源污染模式zh_TW
dc.subjectSediment delivery ratioen_US
dc.subjectSensitive factoren_US
dc.subject泥砂遞移率zh_TW
dc.subject敏感因子zh_TW
dc.titleThe Investigation of Sediment Delivery Ratios for Watershed in Taiwanen_US
dc.title台灣集水區泥砂遞移率之探討zh_TW
dc.typeThesis and Dissertationzh_TW
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