Study on temporal and spatial variations of economic development in Chengdu-Chongqing(Cheng-Yu) economic zone

The distribution space patterns concerning GDP, per capita GDP, and economy development intensity of Chengdu-Chongqing( Cheng-Yu) economic zone spread outwards in layers and circles from the centers of Chengdu and Chongqing Ctiy. In Chengdu urban zone the amount of connection and also the degree of belonging for each circle is distinct from others,and they spread outwards showing the axial distribution. Thus,the near-zone districts connect more with the urban city,but the radiation area of the urban zone is limited. On the contrary,Chongqing urban zone has a wider and stronger radiation area,and the circles of connection and belonging expand in a fan shape. The economic hinterlands of the two large urban areas of Chengdu and Chongqing occupy half of the Cheng-Yu economic zone. The axis line which connects these two urban areas experiences a process of connection-disconnection-reconnection.