城镇居住区土地生态适宜性评价与优化对策:以上海市奉贤区为例

以上海市奉贤区为例，综合考虑自然环境、土地利用和服务设施等因素，建立评价指标体系并采用成对比较法确定指标权重，在生态敏感性分析和土地适宜性分析的基础上进行土地生态适宜性评价，在排除A类基本农田和高生态敏感区的前提下，进一步考虑区位、社会和服务功能，选择出适宜建设的区域.研究结果表明：奉贤区适宜进行开发的用地面积占18.88%，可在指导下进行适度开发的用地面积占8.20%，不宜作为城镇居住区用地面积占14.92%，需要对敏感脆弱生态环境进行保护的区域占26.52%，另外有31.49%的区域为基本农田，禁止进行开发.为奉贤区滨海生态区建设与环境保护提供科学依据，对区域整体人居空间布局优化和城市总体规划具有一定参考意义.

Ecological suitability assessment of land for urban residential areas and optimum strategy: A case study of Fengxian District, Shanghai

This article took Fengxian District, Shanghai as an example to do land ecological suitability assessment for urban residential area location. Topography, land use, natural environment, and service facilities were chosen as factors of the index system. The assessment was accomplished with ecological sensitivity analysis and land suitability evaluation. The result shows that the maximum optimum area for urban resident area accounts for 18.88% of the total area; the moderate optimum area 8.20%, the area for ecological protection 26.52%, and the basic farmland 31.49%. Based on the results, suggestions and recommendations were made on urban development and environmental protection of Fengxian District.