集聚效应、集聚效率与城市规模分布变化

摘　　要:本文从城市集聚效应的视角，分析我国城市规模分布的结构性变化的机制，在此基础上构建了包含集聚效应的城市总量生产函数的计量经济学模型，然后应用OLS方法估算我国不同规模等级城市的平均集聚效应指数和平均集聚效率指数．并对比分析其对城市规模分布变化的影响。本文的实证结果表明，平均集聚效率指数的高低与城市规模分布比重的增减相一致。

The Agglomeration Effect, Agglomeration Efficiency and the Change of City Size Distribution

From the viewpoint of city agglomeration effect, the paper analyses the mechanisms of the structural change of city size distribution in China. Based on theoretical analyses, it provides the econometrics model of aggregate production function with agglomeration effect, estimates the average agglomeration effect and the average agglomeration efficiency of city ranks in China by OLS, and compares their effects to the structural change of city size distribution. Empirical analyses show, the higher the share of city size distribution is, the higher the index of average agglomeration efficiency is.