Ứng dụng phương pháp đánh giá đa tiêu chuẩn và GIS trong nghiên cứu trượt lở đất tỉnh Lào Cai

Abstract

Lao Cai, a mountainous province, has a high landform, a complex geological structure, and is dissected strongly. Lao Cai’s endogenous processes happen strongly with a large rainfall, which impulse the natural hazards. Recently, in September 2004, a landslide happening in Lao Cai killed 26 people, lost tens of billion VND. With its strategic position of politics, economy and society, Lao Cai indeed needs basic studies for mitigating natural hazards and sustainable development. Landslide, a natural process on the slope, is affected by gravity and many other natural and social factors. Therefore, study of landslide must be based on general geographical opinion, and GIS technology is a effective tool for this work. The article shows the evaluating steps of the factors controlling landslide hazard. The result of project is a map of landslide hazard sensitivity in Lao Cai province.