成兰交通廊道1：25万泥石流危险性评估结果图（2023）

该数据为成兰交通廊道1：25万泥石流危险性评估结果图，存储格式为JPG。全区泥石流危险性评价结果在对泥石流进行区域防灾减灾工作时可提供相关资料及科学依据。根据泥石流灾害形成条件，选取研究区内对泥石流危险程度影响较大的因素作为评价因子。选取9个危险性评价因子，分别为高差、坡度、地层岩性、距断裂距离、降雨量、归一化植被指数（NDVI）、地震动峰值加速度、物源储量和崩塌滑坡灾害点密度。评价数据采用信息量方法，由GIS叠加分析得出。

This dataset is a 1:250,000 debris flow hazard assessment result map for the Chengdu-Lanzhou Transportation Corridor, stored in JPG format. The regional debris flow hazard assessment results can provide relevant data and scientific basis for regional disaster prevention and mitigation work targeting debris flow disasters. Based on the formation conditions of debris flow disasters, factors that have a significant impact on debris flow hazard in the study area were selected as evaluation indicators. Nine hazard evaluation indicators were selected, including elevation difference, slope gradient, lithology, distance to faults, rainfall, Normalized Difference Vegetation Index (NDVI), peak ground acceleration, source material reserves, and density of collapsed and landslide disaster points. The assessment data was obtained using the information quantity method through GIS overlay analysis.