基于GIS的茂县生态敏感性研究

Research on Ecological Sensitivity of Mao County Based on GIS

生态敏感性是反映生态系统对区域内自然和人类活动干扰的敏感程度的指标。本文以茂县为研究区,选取地形、植被、水体方面的生态因子构建该区域的生态敏感性评价体系,运用GIS空间分析技术和层次分析法对其进行综合评价研究。结果表明,茂县的生态敏感性可分为非敏感性、低敏感性、中敏感性、高敏感性和极高敏感性5种类型,其中极高敏感区域、高敏感区域和中敏感区域占比达75.77%。高敏感和极高敏感区域集中分布在山地高海拔地区,该区域应当禁止相关的生态开发活动,合理规划周边环境土地利用类型,才能实现可持续发展。

Ecological sensitivity reflects the sensitivity of the ecosystem to the disturbance of natural and human activities in the region.This paper takes Mao county as the research area,selects the ecological factors of terrain,vegetation,and water body to construct the ecological sensitivity evaluation system of this area,and uses GIS spatial analysis technology and analytic hierarchy process to conduct comprehensive evaluation research on it.The results show that the ecological sensitivity of Mao county can be divided into five types:non sensitivity,low sensitivity,medium sensitivity,high sensitivity,and extremely high sensitivity.The ratio of medium sensitivity,high sensitivity,and extremely high sensitivity areas is 75.77%.Highly sensitive and extremely sensitive areas are concentrated in mountainous and high-altitude areas.In this area,relevant ecological development activities should be prohibited,and the types of land use in the surrounding environment should be properly planned in order to achieve sustainable development.