Ecological Sensitivity Assessment of Honghe Hani and Yi Autonomous Prefecture Based on GIS
Considering the five indicator layers of geological sensitivity,climate sensitivity,water resource sensitivity,vegetation sensitivity,and human interference sensitivity,the evaluation index system of ecological sensitivity in Honghe Prefecture is constructed by refining into 15 influencing factors based on the indicator layer.The different evaluation factors in the research area were divided into 5 levels:insensitive,low sensitivity,moderate sensitivity,high sensitivity,and extreme sensitivity.Determining the weight of the evaluation factors through Analytic Hierarchy Process,GIS spatial analysis was used to evaluate the ecological sensitivity of the research area.The research results indicated that the comprehensive ecological sensitivity of Honghe Prefecture is relatively high,with over half of the areas belonging to moderate or above sensitive areas,mainly distributed in the mountainous areas and surrounding watersheds of central and southern counties and cities.The extremely sensitive areas account for 8.65％of the state area,most of which are distributed in the southern counties and cities of Honghe Prefecture;Highly sensitive areas account for 20.93％of the state area and are distributed in a buffer zone pattern of extremely sensitive areas;Moderately sensitive areas account for 28.96％of the state area and are evenly distributed in various counties and cities within the state;Low sensitive areas account for 25.94％of the state area,mainly concentrated in northern counties and cities;Insensitivity accounts for 15.52％of the state area,mainly distributed in northern counties and cities.Based on ecological sensitivity analysis and combined with the current situation of Honghe Prefecture,specific protection and land use strategies were proposed for different sensitive areas.
Honghe Hani and Yi Autonomous Prefectureecological sensitivityanalytic hierarchy processgeographic information system
万方数据
维普
