基于3D框架的长江中游城市群经济空间演化研究

从密度、距离和整合3个维度对长江中游城市群经济空间的地理格局和演化特征的研究发现：长江中游城市群是在经济密度、经济距离的推动和经济整合的抑制的共同作用下发展的；长江中游城市群处于2D状态，经济整合将是长江中游城市群未来发展的关键；从子城市群来看，处于3D状态的有江淮城市群和武汉城市圈，而长株潭城市群和环鄱阳湖城市群则处于1D状态，经济距离的改善和经济整合的优化将是长株潭城市群未来发展的重点，经济密度的提高和经济整合的优化将是环鄱阳湖城市群未来发展的重点。

Study on Evolution of the Economic Space of the City Group in the Middle Reaches of the Yangtze River Based on the 3D Framework

This paper discusses the economic space＇s geographical structure and evolution features of the City Group in the Middle Reaches of the Yangtze River by using factor analysis from density, distance and division. The results showed that the City Group in the Middle Reaches of the Yangtze River develops by the promoted of economic density and economic distance and the inhibited of economic division. The City Group in the Middle Reaches of the Yangtze River now is at the 2D state and economic division is the key to the middle reaches of t the City Group in the Middle Reaches of the Yangtze River＇s future development. From the sub-urban agglomeration, this paper found that the JAC City Group and Wuhan City Circle are at the 3D state, but the CZT City Group and the Poyang Lake City group is at the 1D state, improving the economic distance and optimizing the economic division will be the focus of the CZT City Group＇s future development, improving the economic density and optimizing the economic division will be the focus of the Poyang Lake city Group＇s future development.