摘要
根据贵州省的地质条件,确定地质灾害分布、地形地貌、地层岩性、地质构造、河流水系、年均降雨量作为评价因子,采用黄金分割法确定各评价因子的权重,利用GIS技术和数学模型对贵州省地质灾害危险性进行评价,得到贵州省地质灾害危险性区划图。从图中分析得知贵州省区域地质灾害的危险性主要处于中度危险区,其次是低危险区和高危险区,处于极高危险区的相对较少。
According to the geological conditions of Guizhou Province, this paper selected 6 factors： geological hazards distribution, terrain and landforms, formation lithology, geological structure, river system, average annual rainfall, for assessment. Corresponding indexes were determined by golden section method. The geological hazard risk assessment of Guizhou Province was made by GIS technology and mathematical model, obtained the ge- ological disasters＇ risk zoning map of Guizhou Province. Draw the conclusions： the zoning geological disasters of Guizhou Province is most in middle danger area, is low danger area and high danger area secondly, in extremely high danger area is less from the map.
出处
《地理空间信息》
2009年第6期24-27,共4页
Geospatial Information
基金
交通部科技攻关资助项目(200331880201)
关键词
地质灾害
GIS
贵州省
geological calamity
GIS
Guizhou province
