【摘要】 为研究秦巴山区近自然模式整治坡面的稳定性,选取坡面土壤的理化性质、抗蚀性、抗剪性指标进行主成分分析,提取了主成分并命名解释变量,通过确定权重和计算因子得分得到了坡面综合稳定性指数。结果表明:近自然模式整治坡面稳定性指数大于自然坡面,且影响坡面稳定性的主要因素为坡面土壤的抗蚀性指标;近自然模式整治坡面稳定性随着土层深度的增加而降低,因此应重点关注20～40 cm深度土层的稳定性。更多还原

【Abstract】 In order to study the stability of slope improved by near-natural model in Qinba Mountain area,the paper selected the indexes of physical and chemical properties,erosion resistance and shear resistance of slope soil to conduct principal component analysis,extracted the principal components,named the explanatory variables and obtained the comprehensive stability index of slope through determining the weight and calculating the factor scores. The outcomes show that a) the stability index of slope improved by near-natural model is greater than that of natural slope and the main factor affecting slope stability is the erosion resistance index of slope soil and; b) the stability of slope improved by near-natural model decreases with the increase of soil depth,therefore,attention should be paid to the stability of soil layer at the depth of 20-40 cm.更多还原