海坛岛群综合承载力分区评价

Zoning assessment of comprehensive carrying capacity of Haitan Island group

以海坛岛及周边岛屿为研究对象,构建基于生态环境保护-社会经济发展双导向的岛群综合承载力评价指标体系,采用遥感影像解译和GIS综合评价方法,评价岛群综合承载力的空间分布状况,将研究区划分为较高承载区域、中等承载区域、低承载区域。结果表明:在研究区范围内,较高承载区域占38.66%,大部分分布在海坛岛中部和近岸海域;中等承载区域占53.81%,分布在海坛岛南部及周边海域;低承载区域占7.53%,分布在南部岛群、东庠岛近岸海域。从可持续发展角度区域开发中应科学合理地维护林地、湿地等重要生态源地的系统性与联系性,从宏观尺度上应引导城镇聚集并对城镇化的不良后果予以积极预防和有效调控,从而降低城镇化的生态风险,提高综合承载能力。

Taking Haitan Island and its surrounding islands as study areas,an evaluation index system of the comprehensive carrying capacity of island group based on ecological environmental protection and socio-economic development was established. Using remote sensing image interpretation and GIS comprehensive evaluation methods,the spatial distribution of comprehensive carrying capacity of island groups is evaluated and the study area is divided into high capacity area,medium capacity area and low capacity area. The result shows that within the study area,the high capacity area accounts for 38. 66%,most of which are distributed in the central part of Haitan Island and the coastal waters.The medium capacity area accounts for 53. 81% and is distributed in the south of Haitan Island and its surrounding sea areas. The low capacity area only accounts for 7. 53% and is distributed in the southern area of Haitan islands group and the coastal waters of Dongxiang Island. To reduce the ecological risk of urbanization and improve the comprehensive carrying capacity,from the perspective of sustainable development,regional development should scientifically and reasonably maintain the systematicness and connection of important ecological sources such as forest land and wetland; from the macro scale,cities and towns should be guided to gather together and actively prevent and effectively control the adverse consequences of urbanization.