基于地理国情的土地利用格局与敏感性评价——以上海市崇明生态岛为例

针对土地资源可持续利用与生态环境保护的问题,基于地理国情数据,以上海市崇明生态岛为例,利用景观指数识别崇明生态岛的土地利用空间格局,并采用单因子分析与多因子叠加相结合的方法评估崇明生态岛的土地生态敏感性。结果表明,崇明生态岛的土地利用与布局呈现出集约化发展趋势,城镇区域的土地利用破碎化程度相对较高,土地生态敏感性较低,可以承受相对较大强度开发;崇明生态岛约47.3%的土地属于中高度敏感区,需要加强生态保护。

Assessment of Land Use Patterns and Sensitivity Based on Geographical Conditions:A Case Study of Chongming Eco-island in Shanghai

Aiming at the sustainable utilization of land resources and the protection of ecological environment,this paper,based on the data of geographical conditions,taking Chongming Eco-island in Shanghai as an example,uses landscape index to identify the spatial pattern of land use.Besides,this study evaluate the land ecological sensitivity by combining single factor analysis with multi-factor superposition.The results show that the land use and layout of Chongming Eco-island shows an intensive development trend.Meanwhile,the degree of land use fragmentation in urban areas is high,and the ecological sensitivity is low.These areas can withstand relatively high intensity development.Moreover,about 47.3%of the land in Chongming Eco-island belongs to medium and high-sensitive areas,which is necessary to be strengthened the ecological protection.