基于AHP-信息量法的密云区地质灾害易发性评价

以北京市密云区地质灾害调查数据为基础，结合高分辨率遥感影像解译成果，选取高程、坡度等7个评价因子，采用层次分析法和信息量法开展研究区地质灾害易发性评价。结果表明:研究区地质灾害易发于高程100~500 m、坡度25°以上、山区迎风坡（<90°）、距离断裂构造近的区域，岩层软硬相间、降雨量大、NDVI为0.1~0.3的区域发生地质灾害可能性大；高、中易发区面积占研究区总面积的64.91%，包含区内96.41%的地质灾害数量，与实际调查结果相吻合。

Geological Disasters Susceptibility Assessment in Miyun District Based on AHP-information Quantity Method

According to the survey data of geological hazards in Miyun District, Beijing, combining with the interpretation results of high-resolution remote sensing images, 7 evaluation factors including elevation and slope, etc. are selected and AHP and information quantity method are adopted to carry out the geological disasters susceptibility assessment in the study area. The results show that the geological disasters in the study area are prone to occur in areas with an altitude of 100~500 m, a slope above 25°, a mountainous windward slope(<90°), and a region close to the fault structure. Geological hazards are more likely to occur in areas with soft and hard phases of rock formations, heavy rainfall, and NDVI of 0.1 to 0.3. The area of high and medium danger areas accounts for 64.91 % of the total area of Miyun District, including 96.41 % of the geological disasters in the area, which is consistent with the actual survey results.