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Author: Admin | 2025-04-28
Cooperation, which has a reverse role in promoting the strengthening of regional inter city ties.The average values of “out-degree centrality” and “in-degree centrality” of the cities in the research area are high, but the difference between cities is obvious, which also shows the characteristics of “downstream area > middle and upstream area”. Most dual-direction connection strength between cities is generally equal, but that of the central city to surrounding cities is dramatically higher than that of surrounding cities to their central city, indicating that the “agglomeration effect” of the central city is significant and the central status is strong. The urban connection in the basin has obvious cluster structure, and the urban agglomeration is relatively mature and closely connected. The internal connection strength of cohesive subgroups of cities is strong, while the connection strength between cohesive subgroups of cities is relatively small. The cohesive subgroups of cities generally present an “M” shape along the river.The results show that the construction of urban transport facilities in the river basin is generally in a satisfying condition, though the shortcomings in the middle and upper reaches still need to be made up. Chongqing, Chengdu, Kunming and other cities are very important for the interaction between cities within the region as well as in the connection between regional cities and downstream developed areas. The “center-edge” structure of urban agglomeration is more obvious.Based on the empirical analysis, there are some practical suggestions proposed as followed:First, the Yangtze River basin is of strong economic strength. There are many central cities with strong radiative driving power, which are evenly distributed in the river basin. Promoting the integration of urban functional groups will be a key task. In the near future, the 4 second-class subgroups of the city network may be prioritized as plans of zoning for the construction of the city network. First, strengthen the internal relations of the secondary subgroups, vigorously develop the intercity railway, promote the industrial echelon transfer and the uniform distribution of the population. On this basis, gradually strengthen the interconnection of various infrastructure between adjacent subgroups. Nanchang in Jiangxi, Kunming in Yunnan and Changsha in Hunan can be selected as key cities. Promote the further integration of several major urban agglomerations, form the urban development pattern of “downstream driving - midstream transition - upstream connection”, and drive the development of cities in the upstream such as central Yunnan and the hinterland of Tibet area.Second, further enhance the functions of central cities, expand the radiation and driving capacity, and strengthen the links between central cities. The central city plays an important role in regional economic driving, function transmission intermediary, and building a cooperation platform. The construction of central cities can refer to the current M-shaped distribution to build the core city chain in the west-east direction of “Chengdu/Chongqing - Wuhan - Hefei - Nanjing—Shanghai” connecting the upstream and downstream areas, develop the sub central city chain of “Kunming - Changsha—Nanchang”, and strengthen the links between the north and south basin.Third, give full play
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