基于可拓学和协调性分析的区域土地综合质量评价

Evaluation of regional land comprehensive quality based on extension theory and evolve harmonious analysis

将可拓学和协调性分析方法相结合,用于评价快速城市化地区土地综合质量。该方法将土地质量指标体系所反映的独立信息进行有机整合,得到表征土地质量优劣的量化结果;并以此为基础分析不同类型土地质量协调性和土地质量与城市化发展的协调性。以苏州市域为例,结果表明:市域内农用地质量整体情况较好,建设用地质量的区域差异较明显,未利用地质量分属于Ⅰ级和Ⅲ级两个级别,土地综合质量大体表现为两个层次;市域多数单元内不同类型土地质量间的协调状况较好;市辖区土地质量与城市化的协调状况最好,其他依次为张家港、常熟、吴江、昆山和太仓;评价结果与现实情况比较吻合,表明物元可拓模型和协调性分析方法在土地质量评价中具有较强可信度。

The evaluation method of land comprehensive quality which combines extension theory and evolve harmonious analysis method is described in the paper. It is applied to thoroughly evaluate land quality status and its harmony with urbanization in rapid growth regions. The method is used to integrate individual information related to land quality indicators, to obtain quantitative results of land quality. According to these results, the harmony of different type land qualities was analyzed as well as between land quality and urbanization. Taking as Suzhou city an example. The results show that the comprehensive land quality can be generally categorized to two levels. Farm land quality in Suzhou domain is very good in general, but construction land quality is quite different varying from units to units. The unused land quality is divided into two grades （ Ⅰ and Ⅲ）. In addition, the harmony among different types of land qualities in the urban area multiple units is reasonably good. The harmonization between land quality and urbanization is the best in urban district, followed by the order of Zhangjigang, Changshu, Wujiang, Kunshan and Taicang cities according to the level of extension index. The evaluation results of land quality are consistent with actual situations. Therefore, it is concluded that the method described in this paper is high reliable and can be used to evaluate comprehensive land quality of various regions.