The Research Of Urban Economic Ties Temporal Changes In Westem Yunnan

Under the big background of economic globalization,the economic ties between countries and regions become more and more closely,the development of the regional economic cooperation has become an irreversible trend.For a long time China's economic development is not balanced in the space,spatial economic ties between the western parts of the city is weak,which is not conducive to the collaboration and the optimal allocation of resources between regions.Development of economic ties and cooperation between the cities in western Yunnan region,promote the optimization of the various cities within the region complementary,is the inevitable requirements of urban overall western yunnan area.In this paper,selection based on region of western yunnan,and select Dali,baoshan,lijiang,lincang,nujiang,dehong and diqing seven cities as the research object,based on the center of the constructed function index model,traffic accessibility index model,the interaction of gravity model and economic location model,based on the 2003,2006,2009,2012,4 time section of dynamic data,from the Center city hierarchy,the central city accessibility analysis,economic strength and the direction of time sequence evolution and economic links multiple angles to measure analysis space evolution of spatial and temporal variations of urban economy in western yunnan area.Finally from strengthening the construction of the core city,foster new growth pole,promoting transportation infrastructure,reasonable regulation of competition between the city and other aspects of western Yunnan,in order to making some suggesitions for strengthening economic ties western Yunnan city.Based on the research in this paper we can draw the following conclusion:① Dali core dominance of space is relatively outstanding.Dali for membership to other areas of the city in western Yunnan were higher,indicating that dali has higher space dominance in the region Seven cities in western Yunnan,Lijiang,Dali,Baoshan,Lincang and other cities with a larger role in the strength of the city,which is close to the main and spatial distance,city size and overall strong economic strength are closely related.② Urban agglomeration and radiation ability in the whole western yunnan area is weak,the economic development is still at the initial stage,Dali,baoshan has a clear position for regional center and deputy center city,but the core leading role is not prominent.Dali on its surrounding city is far greater than the degree of influence on the western edge of the city,Dali impact on its surrounding cities extent far greater than the impact on the western edge of the city,suggesting Dali as an economic,cultural,and transportation center of western Yunnan,and its economic strength is still relatively weak,mainly around the city and there is a definite link the impact on the economy and the entire western Yunnan region radiation range is not wide enough,pull the core role of economic growth in western yunnan area still needs to improve,speed up and the surrounding urban traffic facilities construction,further improve the clear on the road,only in this way cn we better play its leading role.③ Economic ties within the region in line with the distance attenuation law,the transportation is economic ties within the region to support the system,the improvement of road network,transportation,technology and the improvement of transport capacity of urban economic contact scope and intensity has a great influence,the economic links between the cities along the main highway extension and constant decrease with the increase of distance.④ Unbalanced economic development between regional cities,on the space distribution,Dali as the center and Baoshan as the secondary center,Center periphery distribution pattern,The poorer cities are mainly distributed in the edge of the western yunnan area,which has a great development potential.In the western Yunnan region economic links between cities close enough to the center of Dali,spatial structure was outside the center,and on the region as a whole,the spatial distribution of economic ties has significantly unbalanced,poor contact between the edge of the city.