基于TOPSIS模型的国土空间开发适宜性评价研究——以宜昌市为例

Evaluation of Territorial Spatial Development Suitability Based on TOPSIS Model——A Case Study of Yichang City

开展国土空间开发适宜性评价是实现区域协调发展和可持续发展的重要前提和基础。本文以宜昌市为研究对象,从资源环境承载潜力、现有开发强度、经济发展潜力3个维度构建国土空间开发适宜性评价指标体系,运用灰色系统理论模型与Topsis模型评价当地国土空间开发适宜性。结果表明,宜昌市国土空间开发适宜性值介于0.3901~0.5582之间,处于较高水平的区县较少;空间上存在较明显的集聚特征,高—高聚类分布在宜昌市中部核心城区,高—低聚类分布在夷陵区及点军区,低—低聚类分布在西南部区县,不显著区域主要分布在宜昌市的边缘县区;热点分析结果表明,宜昌市国土空间开发适宜性向中间聚拢,中部成为开发热点区,同时也表明其整体空间集聚性较不均衡。

Carrying out the suitability evaluation of territorial space development is an important prereq-uisite and basis for achieving regional coordinated development and sustainable development.Taking Yichang City as the research object,this paper constructs an evaluation index system for the suitability of land space development from three dimensions:the carrying capacity of resources and environment,the existing development intensity and the economic development potential,and uses the grey system theory model and Top-sis model to evaluate the suitability of local land space development.The results show that the overall spa-tial distribution of the suitability of land space development in Yichang City has a relatively high cluster-ing feature;In terms of local spatial distribution,the high-high polymer species are distributed in the central core urban area of Yichang City,and the high-low polymer species are distributed in Yiling District and Dianjun District;Low-oligomers are distributed in southwest regions and counties;The insignificant ar-eas are mainly distributed in the districts and counties around Yichang City;The hot spot analysis shows that the suitability of land space development in Yichang City converges to the middle,that is,the middle becomes a hot spot for development,and also shows that the overall spatial agglomeration of the suitability of land space development in Yichang City is relatively unbalanced.