坡面泥石流发生的地貌信息初探——以重庆市北碚区为例  

Information of Debris Flow on Hillslope ——A Case Study in Bei-bei, Chongqing

作　　者：曾凡伟[1] 徐刚[1] 李青[1] 桑琰云[1] 彭涛[1] 

机构地区：[1]西南师范大学资环学院,重庆400715

出　　处：《土壤通报》2005年第3期402-406,共5页Chinese Journal of Soil Science

基　　金：西南师范大学自然地理学博士点开放基金资助(411408)

摘　　要：坡面泥石流的发生是地貌信息的综合反映,是地表能量在各种因素影响下的再分配。坡面泥石流堆积物是坡地系统总能量减少的最好证明,堆积物体积的大小与坡面泥石流宽度、坡积物厚度、流域高差、流域狭长度、坡度和沟谷纵比降等地理要素密切相关。本文以北碚区坡面泥石流为例,初步探讨了坡地总能量的减少与各种地貌要素的关系,并通过多元回归的方法求取了坡地总能量减少的回归方程。检验后证明回归系数与0有显著差别,该回归方程有意义。The happened of debris flow on hillslope is compositive reflect of relief information and it is energy redistribution of the earth's surface under lots of factors influence. The debris flow of hillslope's accumulation material is the best testified of general energy decreasing in sloping field system. There are consanguineous connections between accumulation material and the width debris flow of hillslope, the thickness of accumulation material, the different highness of drainage area, narrow extent of drainage area, gradient and channel vertical ratio. In this text we discuss mainly the relations between general energy decreasing in sloping field system and relief factors in Bei-bei district, Chongqing . We find a regression equation about general energy decreasing in sloping field system through multivariate statistical analysis method. It hads proved that there are notable distinction between zero and regression coefficient, so regression equation is significative.

关 键 词：坡面泥石流 地貌要素 多元统计 回归方程 

分 类 号：P642.23[天文地球—工程地质学]