課程概述 |
1、 課程名稱:土壤沖蝕力學及預測
(Mechanics and Prediction of Soil Erosion)
2、 學分數:3
3、 課程編號:622U0860
4、 負責教師:范正成
5、 課程目標:瞭解土壤沖蝕之力學原理,影響土壤沖蝕之要素,定量的(Quantitatively)預測土壤沖蝕及土壤沖蝕之實地測定。
6、 課程內容概要:
(1) 土壤沖蝕力學:
a.雨點與逕流之沖蝕能力(Erosivity)
b.土壤顆粒之分離(Detachment)、搬運(Transportation)及沈積(Deposition)
c.波長及報度對沖蝕的影響
d.坡面之處理(包括Cover, Management and Supporting Practice)對沖蝕的
影響
(2) 土壤沖蝕預測:
a.通用土壤流失方程式(The Universal Soil Loss Equation)及其他公式的演進
b.降雨逕流因子(The Rainfall and Runoff Factor)
c.土壤可蝕性因子(The Soil Erodibity Factor)
d.坡長因子(The Slope Length Factor)
e.坡度因子(The Slope Steepness Factor)
f.覆蓋及保持因子(The Cover and Management Factor)
g.水土保持及措施因子(The Supporting Practice Factor)
h.實例(Example)
(3) 土壤沖蝕之實地測定:(Field Erosion Measurement)
a.人工降雨機(Rainfall Simulator)
b.試驗場地之預備及降雨機之操作
c.室內試驗室之試驗及數據分析
7、 成績計算方法:作業及報告30%,其中考30%,期末考40%
8、 主要參考資料:
(1) Renard, K.G., G.R. Foster, G..A. Weesies, D.K. McCool and D.C. Yoder,1997“Predicting soil Erosion by Water: A Guide to Conservation Planning With the Revised Universal Soil Loss Equation (RUSLE), Agriculture Handbook No. 703, U.S. Department of Agriculture, Washington, D.C., 384pp
(2) Wischmeier, W.H., and Smith, D.D., 1978“Predicting Rainfall Erosion Losses: A Guide to Conservation Planning”, Agriculture Handbook No. 537, U.S. Department of Agriculture, Washington, D.C. 58pp.
(3) Foster, G.R., 1982,“Modeling the Erosion Process”, Chapter 8,“Hydrologic Modeling of small Watersheds”, Edited by Hann, C.T., Johnson, H.P., and Brakensick, D.L., ASAE Monograph Number 5, American Society of Agriculture Engineers, St. Joseph, Michigan, pp 297-380.
9、 適合選修對象(院、 |