基于GIS的平潭岛生态敏感性评价研究

Study on Ecological Sensitivity Evaluation of Pingtan Island Based on GIS

通过研究平潭岛的生态敏感性,保障其生态安全格局,可以作为其现有用地布局调整和优化的依据。根据平潭岛特征,选取坡向、坡度、高程、土地利用类型、水域缓冲、植被覆盖度6个指标,运用GIS分析技术和层次分析法,构建评价指标体系、进行生态敏感性综合评价,得出平潭岛敏感性主要集中在中度和重度敏感的结果。根据评价结果,针对各区提出了相应的规划策略,为平潭岛生态环境保护提供参考。

By studying the ecological sensitivity of Pingtan Island and guaranteeing its ecological security pattern, it can be used as the basis for adjustment and optimization of its existing land use layout. According to the characteristics of Pingtan Island, six indexes including slope aspect, slope, elevation, land use type, water buffer and vegetation coverage are selected. GIS analysis technology and analytic hierarchy process are used to construct evaluation index system and carry out comprehensive evaluation of ecological sensitivity. It is concluded that the sensitivity of Pingtan Island mainly concentrated in moderate and severe sensitivity.According to the evaluation results, the corresponding planning strategies are put forward for each district, providing reference for ecological environment protection of Pingtan Island.