Abstract:

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