黄土高原河谷演变与地质灾害发育规律研究——以陕西省子长县为例  

Valley evolution and geologic hazard occurrences in the Loess Plateau of China——a case study: Zichang County in the northern loess plateau of Shanxi Province

作　　者：曾磊[1,2] 黄玉华[1] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]长安大学,陕西西安710064

出　　处：《中国地质灾害与防治学报》2010年第3期67-72,共6页The Chinese Journal of Geological Hazard and Control

基　　金：国土资源大调查项目:陕西省延安市1:5万地质灾害调查(1212010640402)

摘　　要：我国黄土高原沟壑纵横,地质灾害频发、生态环境脆弱。笔者选取陕北黄土高原延安市子长县为例,通过1:5万地质灾害野外调查,采用SPOT5高精度遥感影像数据进行地质灾害解译和数字高程模型DEM分析,系统研究了河流演变与地质灾害发育的特征和分布规律。结果表明河谷地貌的演化发育程度对地质灾害发育规律具有明显的控制作用。Crisscrossing gullies,frequent geological hazards and vulnerable ecological environment problems occur in the Loess Plateau of China.In this paper,the authors took the Zichang County in Yan＇an City of the northern Loess Plateau of Shaanxi Province as an example,based on 1∶ 50000 investigation of geological hazards,as well as high-precision remote sensing image data SPOT5 and DEM data,their analyzed the evolution of valley and characteristics of geological hazards and distribution.Study shows that the river valley and the evolutional stage of landforms play a controlling role in geological disasters.

关 键 词：关键词:地质灾害 河谷演变 黄土高原 陕西省子长县 

分 类 号：P642.2[天文地球—工程地质学]