黄土高原区地形与植被分布规律对滑坡发生概率的影响

现代地质 ›› 2010, Vol. 24 ›› Issue (5): 1016-1021.

黄土高原区地形与植被分布规律对滑坡发生概率的影响

殷昊¹,刘飞¹,杜立新²,隋松宇³

1.中国地质大学水资源与环境学院，北京100083；2.河北省地矿局秦皇岛矿产水文工程地质大队, 河北秦皇岛066001；
3.辽宁水文地质工程地质勘察院, 辽宁大连116038

出版日期:2010-09-24 发布日期:2012-03-28
通讯作者: 刘飞，男，讲师，1970年出生，水文地质学专业，主要从事工程地质及城市环境地质研究。
作者简介:殷昊，男，博士研究生，1980年出生，水文地质学专业，主要从事工程地质及灾害地质研究。 Email: cugbyinh@163.com。
基金资助:
国家科技支撑计划项目（2006BAJ06B02，2008BAJ06B02）

Probability of Loess Landslide Based on Terrain and Vegetation Distribution in Loess Plateau

YIN Hao¹, LIU Fei¹, DU Li-Xin², SUI Song-Yu³

1.School of Water Resources and Environment, China University of Geosciences, Beijing100083, China;
2.Qinhuangdao Mineral Resource and Hydrogeology Brigade of Hebei Geological Prospecting Bureau, Qinhuangdao, Hebei066001, China;
3.Liaoning Investigation Institute of Hydrogeology and Engineering Geology, Daliang, Liaoning116038, China)

Online:2010-09-24 Published:2012-03-28

摘要/Abstract

摘要：

黄土高原区自然斜坡的地形与植被条件对滑坡的发生有一定的促进和抑制作用。通过将研究区划分为31 418个自然斜坡单元，利用ArcGIS区域统计功能提取斜坡单元的地形和植被参数，分析研究区斜坡的坡体形态和植被空间分布规律。依据区内292处滑坡调查点的资料，统计分析不同坡体形态下的滑坡发生概率。分析结果表明，研究区正向类的凸型和直线型斜坡发生滑坡的概率明显高于负向类的凹型和阶梯型边坡；随着斜坡坡度和坡高增大，发生滑坡的概率增大；阳坡发生滑坡的概率明显高于其他坡向的边坡；随着NDVI增大，滑坡发生概率显著降低。

关键词: 黄土滑坡, 斜坡地形, 植被分布, 概率分析

Abstract:

Slope terrain plays an important role in loess landslide. In Loess Plateau, the large research area is divided into 31,418 slope units with the watersheds and steam networks in the Geographic Information System (GIS). All the terrain parameters of the slope units can be got by Zonal Statistics of Spatial Analyst Tools in GIS and the topographic distribution of slope units will be shown. The probability distributions of landslides at ranges of different profile curvatures，slope，slope height and aspect are discussed using parameters of all slope units and 293 loess landslides in the study area. It is found out that the probability of loess landslides would increase with the profile curvatures，slope and height.

Key words: loess landslide, slope terrain, vegetation distribution, probability analysis

中图分类号:

P642.22

殷昊, 刘飞, 杜立新, 隋松宇. 黄土高原区地形与植被分布规律对滑坡发生概率的影响[J]. 现代地质, 2010, 24(5): 1016-1021.

YIN Hao, LIU Fei, DU Li-Xin, SUI Song-Yu. Probability of Loess Landslide Based on Terrain and Vegetation Distribution in Loess Plateau[J]. Geoscience, 2010, 24(5): 1016-1021.