四川城市对称性空间结构研究

城市空间分布规律的研究一直是城市规划者和地理学家研究的热点。早期关于城市空间分布的理论有克里斯泰勒的中心地理论、廖什网络结构理论等，现在研究较热的是基于人类空间行为自组织演化的分形理论。我国著名地学家叶大年先生于2001年提出我国城市分布对称的思想，并将其系统整理为关于城市分布对称的学术思想。成渝经济区的崛起，为四川省城市空间结构的优化带来了重要的契机。依据叶大年先生的城市分布对称理论，认为四川主要城市在地质构造等自然地理要素的影响下对称分布明显，且盆西平原城市在天然水系特征和陆路交通干线共同影响下呈格子状分布。针对当前四川省主要城市空间结构发育的不成熟，对成渝经济区影响下的四川城市空间分布形态重新进行空间构建，首次提出关于四川城市空间结构的“钻石模型”。分析表明，此模型能够较好地解释当前川内城市的空间分布及演化趋势；同时也在一定程度上说明城市分布对称的思想具有一定的理论价值和实践价值，值得学者引起重视

RESEARCH ON SPACE CONSTRUCTING OF CITIES SYMMETRY TO SICHUAN PROVINCE

The study about rules of cities’ spatial structure is a central research always for city planner and geographer.In the study field,W.Christaller’s central place theory and A.Loesch’s networks structure theory was highly valued in an early stage.Now the research hotspots is the fractal theory based on the development of human spatial behavior’s self-organization.In 2001,the famous chinese’s geoscientist academician.YE Da-nian advance the views about the city symmetry in chinese,and sort out it to a theory subsequently.With the development of chengdu-chongqing economic zone(CCEZ),space constructing of Sichuan cities are faced with an important chance.This paper analyzes the Sichuan cities distribution according to the city symmetry theory by YE Da-nian.We consider the cities distribution in Sichuan have the symmetry remarkably under the physio-geographical(just as geological structure)pattern’s influence and the cities’s distribution in west-basin plane show lattice character because of water natural system and land traffic trunk lines.Countered the spatial structure’s deficiency of Sichuan cities,paper merge anew that spatial distribution of Sichuan cities and put forward the new theory about urban spatial structure of Sichuan which is diamond model(DM).The model can provide a satisfactory explanation for the spatial distribution and evolution trend of Sichuan cities.And point out that the city symmetry theory have theoretical and pratical values to a certain degree,so it is worth to be better studied by scholars.