基于中心城市经济扩散效应的卫星城市规划

科学规划卫星城市对引导中国城市化朝可持续方向发展具有重要意义。分析了中心城市对周边城镇经济扩散作用与热传导现象的相似性，引入了经济扩散通量的概念。参照热传导的傅立叶定律，建立了中心城市对周边城镇的经济扩散模型。模型表明中心城市对周边城镇的经济扩散通量与其间两城市间的产业梯度及交通通道的通过能力成正比，说明交通发展对中心城市在区域经济一体化中发挥带动作用具有重要意义。提出卫星城市规划应以经济扩散通量为依据，首先选择经济扩散通量大的城镇为卫星城市，对经济扩散通量小而与中心城市产业梯度高的周边城镇，可以通过交通通道建设来培育其向卫星城市发展。

Planning of satellite cities based on economic spread of central city

Scientifically planning satellite cities is very important to China's sustainable urbanization.This paper analyzed the similarity between economic spread and heat conduction,introduced the conception of economic spread flux,and established the economic spread model of central city to its adjacent counties by referring to the Fourier theory.The model indicates that the economic spread flux of central city to its adjacent counties is in proportion to the capacity of traffic passages and industrial gradient between them,the development of transportation is significant to exerting the central city's function in regional economic integration.It is put forward that the towns with greater flux of economic spread should be the satellite cities of central city, and the towns with smaller flux of economic spread but with higher industrial gradient can be developed into a satellite city by developing transportation. 3 tabs,2 figs,10 refs.