成都市城镇体系空间结构研究

成都市位于四川盆地的成都平原上，是我国为数不多的较典型的同心圆城市之一。目前，成都市的城市发展已经进入了工业化与城市化中期阶段。从空间结构理论入手，对成都市城镇体系的空间结构进行分析，结果显示：行政辖区内的14个郊县（区）呈现具有黄金分割特征的五边形结构，并可划分为5个五边形。它们分别是：龙泉驿-新都-郫县-温江-双流5个近郊县、区构成的卫星城镇环；大邑-崇州-邛崃-蒲江-新津5个郊县构成的远郊城镇环；以都江堰为共同顶点，由近郊卫星城镇与远郊县、区构成的2个五边形城镇环（郫县-新都-青白江-彭州-都江堰、郫县-温江-崇州-大邑-都江堰），以及成都主城区东、南部尚待形成的五边形城镇体系结构。在理论上论证了成都市向东、向南发展的客观性、必然性。

ON THE SPATIAL STRUCTURE OF CHENGDU CITY IN SICHUAN PROVINCE

Chengdu City,which is located in the west of Sichuan Plain,is surrounded with hilly and mountainous areas.In analysis of the spatial structure of the urban system in Chengdu Plain,the authors draw a new conclusion that the urban system is made up of a series of pentagons.Based on geometry theories,the pentagon,as a basic unit,has a fractal and golden section character.Then,the authors explained why Chengdu City should expand to its eastern or southern directions,and hypothesized that the urban pentagonal spatial structure is an imbalanced state and hexagonal is balanced.With the development of urban economy and the growth of population,urban spatial structure will change from balance to imbalance,then imbalance to balance,being an infinite cycle.The urban planning and industry structure adjustment must obey this law.Finally, using the hypothesis,this paper presents a future urban spatial pattern for Chengdu City.