Research on the comprehensive evaluation system of eco-geological environmental carrying capacity based on the analytic hierarchy process

Pointing at the wave effect of Geo-Ecological environment carrying capacity along the Du-Wen highway, the article takes the area along the Du-Wen highway as a object of the study. Based on the geographic census and its monitoring data, the article discusses the collaborative mechanism between the inner driven force of the Geo-Ecological environment. The article explores and create the geological environment carrying capacity database and its evaluation index system which are linked from macro to micro based on the analysis of the factors about the Geo-Ecological environment along the highway. The AHP method is been used to calculate the weight ratio for each evaluating indicator, and reveal the factors, mechanism and regulation of the vulnerability changes in the study area’s Geo-Ecological environment, the method also defines the bearing capacity’s threshold. The research reveals that by combining the “post-earthquake effect” of the south-west area with the evaluation system and its method, it’s a good way to study the variation tendency of Geo-Ecological environment in mountainous region.