Study on the Landslide Susceptibility Assessment in Feng County, Shaanxi Province
详细信息
- 责任者：Meng Qinghua (Tianjin Centre ; China Geologcal Survey ; Tianjin 300170 ; China) ; Sun Weifeng
- 刊名：Geological Survey and Research
- 出版年：2013
- 卷期：36(2)
- 关键词：滑坡 ; landslides ; 陕西 ; Shaanxi Province
- 页码：p.136-145
- 图表：12 illus., 1 table, 19 refs.
- 分类号：1800
- issnNo：ISSN1672-4135
- isbnNo：CN12-1353/P
摘要
Landslide susceptibility assessment is the basis for landslide early warning.In order to develop assessment methods of regional landslide susceptibility in Qinling mountain area,Fengxian County of Shaanxi Province,the authors comprehensively analyzed the geo-hazard investigation and mapping of 1:50000 scale.According to the features of investigation in mountain area,this paper modifies the traditional information model.With ArcGIS and modified information model,the landslide susceptibility evaluation of the whole area of Fengxian County was carried out.According to the result,the distribution of landslide is mainly affected by river erosion,vegetation coverage and human activities.And the whole area was divided into four categories: the high grade area,which covers 165 km2,accounting for 5.2% of the total study area;the medium grade area,which covers 686 km2,accounting for 21.5%;the low grade area,which is measured 1195 km2,taking up for 37.5%;and the stable area that is measured 1141 km2,taking up for 35.8%.The result provided a basis for construction layout and landslide prevention and reduction in Fengxian County,and also provided the guideline for landslide susceptibility zonation in other counties of the Qinling Mountain area.
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