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| 黄土高原区地形与植被分布规律对滑坡发生概率的影响 | |
| 引用本文： | 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). |
| 作者姓名： | 殷昊 刘飞 杜立新 隋松宇 |
| 作者单位： | 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 |
| 基金项目： | 国家科技支撑计划项目 |
| 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 |
Probability of Loess Landslide Based on Terrain and Vegetation Distribution in Loess Plateau |
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| 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——Journal of Graduate School,China University of Geosciences,2010,24(5). | |
| Authors: | YIN Hao LIU Fei DU Li-xin SUI Song-yu |
| 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. |
| Keywords: | loess landslide slope terrain vegetation distribution probability analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |