基于GIS平台的北京市延庆县生态敏感性分析

Ecologic Sensitivity Analysis in Yanqing County Based on GIS

延庆县位于北京西北部山区。该县生态资源丰富,承担着首都及周边地区水源保护和风沙治理职能。因此,保护该地区的生态环境显得极为重要。本文在GIS技术支持下,并结合延庆地区生态特点,选取影响该地区生态环境的地形地貌、生态安全、社会经济等3大类9个指标因子,采用层次分析与因子叠加分析相结合的方法,对延庆的生态敏感性进行了分析评价。最终,依据各因子确定的生态敏感度的高低,将延庆县分为生态高度敏感区、生态中度敏感区和生态弱敏感区,分别占延庆总面积的48.4%、18.31%和33.29%。同时,本文对生态敏感度分析结果进行了讨论,并提出了分区保护与建设的建议,为延庆生态环境保护和经济发展提供了有价值的参考。

Yanqing County is located in the northwest of Beijing, as this area is rich in ecological resources, it plays an important role in water source protection and sand control for Beijing and adjacent areas. Therefore, the protecting of the ecological environment of the area is extremely important. In this paper, based on the ecological characteristics of Yanqing, we select topography, ecological security, and social economy as ecological environmental impact factors under the support of GIS technology. Finally, according to the level of ecological sensitivity determined by each factor, Yanqing County was divided into highly sensitive areas, moderately sensitive areas and ecologically weak sensitive areas, accounting for 48.4%, 18.31% and 33.29% of the total area of Yanqing, respectively. At the same time, the results of ecological sensitivity analysis were discussed, and suggestions for zonal protection and construction were put forward, which provided valuable reference for ecological environment protection and economic development of Yanqing area.