中国县级市聚集经济效应分析

Analysis of Agglomeration Economy Effect of County-Level Cities in China

基于2006—2015年中国未发生行政区划变动的321个县级市的面板数据,采用改进后的柯布-道格拉斯生产函数,探讨各项资源要素聚集对我国县级市经济增长的影响,分析中国城市级别底端但数量最多的县级市经济的聚集效应。此外,将地理区位与各聚集指标相乘的交叉项引入模型,比较相同资源要素在不同的宏观地理区位聚集所产生的经济效应。研究表明:各要素聚集对我国县级市经济增长影响显著;相同要素在不同区位聚集对经济增长的贡献效率存在较大差异。为提高县级市整体的聚集效应,应针对不同区位发挥政府和市场的作用,改革户籍制度,适度优化县级市的产业结构。

Based on the panel data during 2006—2015 of China's 321 county-level cities which did not occur administrative division change,adopting the improved C-D production function to discuss the influence of the relationship between the aggregation of each resources and county economic growth in order to get the empirical results of county-level city agglomeration which is in the lowest urban level but with the largest number. In addition,introduce the geographic location and the aggregation index multiplication cross terms to the model,comparing the same resources at different geographical location to gather the economic efficiency. The studies have shown that aggregation of each resources has a great effect on county-level cities' economic growth; the same element in different location has a quite different contribution to the economic growth efficiency. For improving the overall aggregation effect of county-level city,the role of government and the market should be played in different locations,taking the reform of the household registration system,and moderately improving the level of industrial structure at the county level.