基于国产遥感数据的秭归县地质灾害区域危险性评价

Study on Risk Evaluation of Regional Geological Disasterin Zigui Based on Domestic Satellite Remote Sensing Data

以位于三峡库区的秭归县为研究区,选择国产2 m全色高分辨率遥感数据进行地质灾害范围信息提取,选用国产HJ-1A/B CCD数据提取NDVI、土地利用分类、土壤含水量等动态地质灾害致灾因子,结合坡度、坡向、降水量、沟壑密度等静态因子,采用单因素叠加的信息量模型进行了区域地质灾害危险性评价,对利用国产遥感数据进行区域地质灾害信息提取和评价进行了有效探索。

In this paper, Zigui County, which is in the Three-Gorge area, is taken as the study area.2m panchromatic domestic re-mote sensing image is used to extract geological disaster area information , and HJ-1A/B CCD data is chosen to extract mobile disas-ter-causing elements including NDVI , Land use and soil moisture , and then defined static disaster -causing elements , such as slope, aspect, yearly average rainfall, and gully density, are combined to make regional geological disaster evaluation based on infor-mation amount model .This study is a valuable demonstration of using domestic remote sensing data on geological disaster information extraction and regional evaluation .