Comparison analytical hierarchy process (AHP) and frequency ratio (FR) method in assessment of landslide susceptibility. A case study in Van Yen district, Yen Bai province

Landslides are a natural disasters that frequently occur in the northern mountainous region of Vietnam. This study aims to compare efectiveness Analytical Hierarchy Process (AHP) and Frequency Ratio (FR) modeling mapping susceptibility landslides with support Geographic Information System (GIS). The area is Van Yen district Bai province, which experiences high frequency annually. Ten factors were used as variables model, including lithology map, slope, aspect, plan curvature, profile topographic wetness index, fault network, river road land cover data. landslide statistical report 211 points create ratio while pairwise comparison method based on expert opinion was establish weights for AHP method. results produced spatial distribution five levels: very low, moderate, high, high. Area Under Curve (AUC) evaluate performance both models. indicated model using outperformed by 4.7% addition similarity between maps past locations.