【摘要】 本文根据50余座山塘水库的泥沙实测数据,应用逐步回归分析方法,建立了土壤侵蚀模数数学模型。方程表明影响土壤侵蚀模数的主要因子依次为:陡坡开荒面积、坡度、林地面积和坡耕地面积。文中还根据土壤侵蚀模数及其主要影响因素,使用逐步判别分析力法,对土壤侵蚀强度进行了分级,从而提高了分级的可靠性。该研究成果可应用于四川盆地的高丘中谷及中丘中谷地区。更多还原

【Abstract】 According to data obtained in a field survey of 50 reservoirs and ponds,a mathematical model of modulus of soil erosion was established by using the method of progressive regression analysis The equation shows that the major effective factors of soil erosion are.area of reclaimed wasteland on steep slope,average slope of watershed,forestry area,and slope field area.According to the modulus of soil erosion and the major effective factors,the method of progressive discriminate analysis is used to divide the intensity of soil erosion.Because of additional factors taken into consideration,the classification has been improved.更多还原