The Strength of the External Economic Ties of Western Delta City Group in Shaanxi,Sichuan and Chongqing

Looking from the geographical superiority,Shaanxi and Chongqing sit in the west of the middle area,and adjoin in middle area to east area,which undertake the function to be the first echelon of the eastern part,even the overseas industrial shift.To obtain relation intensity and the direction among West Delta Economic Circle and the key cities and the national major economic sector,the paper analyzes urban economic relation intensity model,shows that the economic relation is relatively weak between the regions neighboring Chengdu and Chongqing inferior urban cluster and the Guanzhong economical belt,and foreign economical relation has been isolated mutually,which need to integrate traveling resources,build the logistics mechanism,and strengthen the relation of the city groups.