长株潭“3+5”城市群经济系统协同演化的时空分析

A Spatio-Temporal Analysis of the Economic System Coevolution of Chang Zhu Tan “3+5” Urban Agglomeration

依据经济功能的分异将长株潭(长沙、株洲、湘潭)"3+5"城市群经济系统分解为生产子系统、流通子系统、分配子系统和消费子系统.通过构建灰色系统熵、系统耦合度、耦合协调度以及序参量,对该城市群经济系统演化的时空分异特征及合理性进行刻画.研究结果表明:(1)消费市场的发育与拓展主导推进长株潭"3+5"城市群经济系统持续有序演进;(2)交通网络的快速完善,推进了核心区乃至城市群整体的流通系统合理性发育,对于物流、人流突出的外围城市而言,则超出了其经济总系统的整体水平,产生负荷;(3)长株潭"3+5"城市群消费能力不足,但发展潜力较大.

Based on the differences of economic function,the economic system of the Chang Zhu Tan ＂3＋5＂urban agglomeration is divided into the production subsystem,the circulation subsystem,the distribution subsystem and the consumption subsystem. On the basis of the related system entropy,coupling degree,coupling coordinative degree and order parameter,the spatio-temporal differentiations of the urban agglomeration＇s economic system is depicted and the rationality of the system＇s evolution is analyzed. The conclusions of the study are as follows. Firstly,the development and extension of the consumer market has played a dominant role in promoting the synergic development of the economic system of the Chang Zhu Tan ＂3 ＋ 5＂urban agglomeration. Secondly,the rapid improvement of transportation nets has strengthened the whole region＇s negotiability. For the core cities,the circulation subsystem tends to rationalize,but for the peripheral cities,the development has increased their burden. Thirdly,the consumption of the urban agglomeration is a little weak,but its development potential is strong.