沈阳经济区城市体系空间结构的分形研究

以沈阳经济区城市体系为研究对象,利用聚集维数、关联维数及计盒维数的基本模型对该城市体系的空间结构进行了分析,认为沈阳经济区城市体系结构具有分形特征,测算结果表明:沈阳经济区城市体系的空间分布呈现围绕中心城市-沈阳的向心式聚集,城市之间交通网络通达性好,空间形态较辽宁省城市体系紧凑。沈阳经济区城市体系的划分相对合理,但仍需优化。建议充分发挥沈阳作为中心城市的强辐射与带动作用,并通过打造沈抚、沈本、沈铁、沈辽鞍营和沈阜5条城际连接带,推动城镇化、加速区域一体化进程;通过产业整合和产业集群化促进资源优化配置,提高城市之间的相互作用,促进沈阳经济区形成联系紧密的"区域经济共同体"。

FRACTAL RESEARCHES ON THE SPATIAL STRUCTURE OF THE URBAN SYSTEM IN SHEYANG ECONOMIC ZONE

It used three kinds of fractal dimensions to characterize spatial structure of the urban system in Shenyang Economic Zone which are respectively named as aggregation dimension, spatial correlation dimension, and box-counting dimension, then found that spatial structure of the Shenyang Economic Zone urban system has obvious fractal properties. According to the results of calculation and analysis, drew the conclusions as follows： the space distribution of the Shenyang Economic Zone urban system is centripetal gathered around the center city of Shenyang, the accessibility of the transport network between cities is good, and the spatial shape is more compact than Liaoning Province urban system. According to the conclusions mentioned above, the author believed that the structure of the Shenyang Economic Zone urban system is relatively reasonable, but still need to be optimized. Proposals were put forward to optimize the urban system of the Shenyang Economic Zone that Shenyang as Center City, its strong radiation and leading role should be fully played, and by way of building Shen-Fu, Shen- Ben, Shen-Tie, Shen-Liao-An-Ying and Shen-Fu five inter-city connections to promote urbanization and accelerate the process of regional integration. By means of industry integration and industrial clusters to promote resources optimization configuration, improve the interaction between cities, and promote Shenyang Economic Zone to form closely linked regional economic community.