河流与城镇体系结构形成的关联特征及空间表现

基于相互作用视角分析了河流与城镇体系结构形成的关联特征及空间表现。河流作为重要自然要素,与城镇体系结构的形成演变存在紧密的关联性,并在空间上表现出不同的特征,研究结果表明:1从数量结构来看,城镇依河流呈非均衡集中分布格局;2规模结构方面,城镇对河流依赖随规模递增而增强,且大城市分布与河流等级、区位密切相关;3职能结构方面,沿河城镇职能具有河流属性特征,且区域中心城市或综合性城市多沿河分布;4空间结构方面,河流引导沿岸城镇空间布局分异,改变中心地空间布局理论结构,且引导沿岸城镇空间体系呈现出点—轴、双核等结构模式。

Relevance and Spatial Performance between River Network and Urban System Structure

Based on interaction perspective, this paper analyzed the relevance and spatial performance be-tween river and urban system structure, and found the following conclusions.As an important natural factor, river is closely related to the formation and evolution of urban system structure, and shows different spatial characteristics. More specifically, firstly, judged by the numeral structure, cities and towns distribute geographically unbalanced concentration along with the river networks.Secondly, the larger the city is, the more closely be related with the rivers.Big cities often locate near the big rivers.Thirdly, from the point of function structure, city or town is often featured with the river which it locates along.Regional central city often locates along a big river.Forthly, in terms of the spatial structure, the river networks guide the spatial structure of urban system.Rivers change the central place theory, and lead urban systems present point-axis model, core-core model, and so on.