基于位序—规模法则与分形理论的重庆市城镇体系结构测度及其优化

Measurement and Optimum of Structure of Urban System Based on Rank-size Law and Fractal Theory in Chongqing City

采用位序—规模法则与分形模型测算了重庆市城镇体系城市首位度、首位比、规模结构与随机聚集结构。分析得出:2011年重庆市城镇体系城市首位度与2005年相比有所优化,但仍处于不合理状态,中间位序的城镇分布过于集中;重庆市城镇体系在随机聚集结构上具有明显的分形特征,城镇空间关联程度较低,彼此相互作用强度弱。在测算基础上,提出了重庆市城镇体系结构和功能优化的建议。

Rank- size distribution law and fractal model was used to calculate the first degree, the first ratio, the size structure, random gathered structure of the urban system of Chongqing City. Compared with the urban system of Chongqing City in 2005, the first degree and the first ratio was better in 2011, but it was still very unreasonable state. For intermediate bit sequence, urban distribution was too concentrated, urban spatial association degree was low, the interaction was weak. Finally, the suggestion of the structure and function optmization of Chongqing urban system was put forward.