Abstract:Mengyin county is located in the southeast of Shandong province with a wide distribution of Daigu landform and abundant rainfall. In recent years, accompanying with the enhancement of human engineering activities, collapse, landslide, and debris flow disasters have further intensified. Based on geological disaster risk survey with the scale of 1∶50000 in Mengyin county. Combining with the latest remote sensing information, five Impact factors have been selected as the evaluation indicators for geological disaster vulnerability in the study area, they are slope, relief, engineering geological rock formation, geological structure, and geomorphic type. The information content model method is used to calculate the information content of each evaluation factor. Through GIS spatial analysis platform, geological disaster vulnerability assessment system in Mengyin county has been established. It will provide effective scientific decision-making basis for carrying out disaster prevention, mitigation and relief work in Mengyin county and ensuring sustainable economic and social development effectively. The study area is divided into geological hazard prone areas, medium prone areas, low prone areas, and non prone areas. The accuracy test value of the offline area (AUC) of the characteristic curve (ROC) is 0.833. It is indicated that the evaluation accuracy is high.
