Dichotomy Douglas-Peucker Algorithm GIS-based GPS data GaoFen-1 Line Simplification Monotonic Chain OpenStreetMap (OSM) Random Forest Research & information: general SHAP biomass distribution bivariate logistic regression model building view convolutional neural network damage signature deep learning dense point clouds ensemble learning field sample rasterization fire risk evaluation fire station forest biomass geographic detector geographic information systems gradient operator green view integrated multisource dataset land cover land dynamics