基于分型理论的四川秦巴山区城镇体系研究

A Fractal Study on the Urban System of Qinba Mountain in Sichuan

秦巴山区被列为我国11个连片特困地区,在我国"十三五"精准扶贫工作的背景下,对四川秦巴山区城镇体系的研究具有重要意义。基于非线性科学分形理论以及GIS相关软件的运用,对四川秦巴山区城镇体系的城市首位度、规模等级分形特征、空间向心性分形、均衡性分形、关联性分形等方面进行分析,得出四川秦巴山区城镇体系具有明显的分形特征,但是首位城市不突出、城镇体系呈现扁平,以通川区为中心的集聚性显著,城镇空间分布结构不紧凑,交通网络发育度亟待提高。以上结论可以为四川秦巴山区城镇规划提供有针对性的理论依据和引导对策,为同类型地区城镇体系研究提供科学参考。

Qinba Mountain was listed as one of the 11 Contiguous-destitute-areas. In the context of precise poverty alleviation in the thirteenth Five-year-plan, the study of the urban system in Qinba mountain area has great significance in China＇s thirteenth Five-year-plan. Based on Nonlinear Science fractal theory and G1S software use, this paper computs and analyzes the urban Qinba mountain towns system of Primate City Degree, rank-scale fractal,space concentric fractal, balance fractal, and relevance fractal etc. then, concludes that there are obvious fractal features of urban system in Qinba Mountain,but the degree is not obvious; the structure of urban system is flat; cities distribute significantly in the center of Tongchuan District. However, the spatial distribution of cities is not compact, and the development of transportation networks needs to be improved. These conclusions can provide targeted theoretical basis and the countermeasures for the Qinba mountain town planning, providing scientific reference for the study of similar urban system.