城市集聚对经济发展质量的影响——以长江经济带为例

Influences of urban agglomeration on the quality of economic development:taking the Yangtze River Economic Zone as an example

构建了城市集聚影响经济发展质量的逻辑框架,以长江经济带108个地级及以上城市为研究对象,以2003-2016年的面板数据为考察样本,运用包含非期望产出的SBM-DEA模型测度了该区域的经济发展质量指数,在此基础上,采用双重差分法检验了城市集聚对经济发展质量的影响。结果显示:城市集聚有助于提高经济发展质量。城市集聚对经济发展质量的提升效应具有区域差异性,呈现出普通地级市>区域中心城市>省会城市和中等城市>大城市>超大城市和特大城市的基本格局。据此提出应鼓励中小规模城市集聚化发展,适度控制超大城市和特大规模城市过度集聚,灵活运用市场机制和政策工具,创新科技应用,提高区域集聚水平,实现城市集聚与经济发展质量提升的有效融合。

This essay theoretically constructs the logical framework of urban agglomeration affecting the quality of economic development,and takes 108 prefecture-level cities and above in the Yangtze River Economic Zone as the research object,and measures the economic development quality index by using the SBM-DEA Model with undesired output.On the basis of this,the Differences-in-differences Method is used to test the influences of urban agglomeration on the quality of economic development.The results show that:Urban agglomeration helps improve the quality of economic development;The effect of urban agglomeration on the quality of economic development has regional differences,showing the basic pattern of ordinary prefecture-level cities>regional central cities>provincial capital cities,medium cities>big cities>super large and mega cities.Thereby,this essay puts forward that small and medium-sized cities should be encouraged to further agglomerate,while moderately controlling the agglomeration of super large and mega cities.It’s also suggested to improve the level of regional agglomeration from the aspects of flexible use of market mechanisms and policy tools,innovative technology applications,so as to achieve the effective integration of urban agglomeration and quality improvement of economic development.