基于GIS的海口市江东新区建设用地适宜性评价

Suitability Assessment of Construction lands in the New Area of Jiangdong,Haikou Based on GIS

为满足中国土地资源利用优化的基本要求以及海口市江东新区发展定位的合理规划,选取了区域的自然、社会、生态三方面的共10个评价因子构建评价指标体系,通过层次分析法确定各因子权重,基于GIS空间分析进行建设用地开发适宜性等级评价,S1、S2、S3、S4、S5占比分别为9.67%、34.89%、25.01%、11.59%、18.84%。海口市江东新区建设用地适宜性整体较高,从空间上呈西向东逐渐减弱的趋势,主要原因在于受东部区域生态环境的限制;西北部主要为优先开发区域,建成区相对集中分布在西北部,基础设施完善度较高;东南部开发受到生态环境的限制。

In order to meet the requirements of optimizing the utilization of land resources and the rational planning of development orientation of the ecological Free Trade Zone in Jiangdong New Area,with the support of GIS technology,the study carried out its suitability evaluation of construction lands,drawing conclusion based on GIS spatial analysis.The proportions of S1,S2,S3,S4 and S5 were 9.67%,34.89%,25.01%,11.59%and 18.84%,respectively.The suitability of construction lands in Jiangdong New Area is generally high,which is gradually weakened from west to east,mainly due to the limitation of the ecological environment in the east;the northwest is mainly the priority development area,and the built-up area is relatively concentrated in the northwest,with a high degree of infrastructure perfection;the southeast development is limited by the ecological environment.