Research on the Economic Contact Directions of Major Cities in Chengdu-Chongqing Economic Zone

An comprehensive evaluation index system for city competitiveness was constructed,and a principal component analysis was carried out on the competitiveness of 16 cities in Chengdu-Chongqing Economic Zone.The city economic contact model was established to calculate the relations among cities,to simulate the development trend and direction of cities and comprehensively evaluate the external economic links of each city,matrix series were visualized treated with ARCGIS so as to make clear the spatial direction of city economic development.As indicated by the results,Chengdu and Chongqing were two closely related central cities;With Chengdu as the center,the economic contact trend was the strongest in the direction of Deyang and Mianyang,then followed by Meishan,Leshan and Ziyang;the economic contact trend with Chongqing as the center was not obvious.The direction of economic contact was effected obviously by geo-spatial directivity in chengdu-chongqing Economic Zone.