中国公共服务供给效率的测度、分解及收敛特征

Measurement,Decomposition and Convergence Characteristics of China’s Public Service Supply Efficiency

文章基于Super-SBM非径向规模报酬可变模型测度2003—2020年我国省域公共服务供给效率,并采用Dagum基尼系数及其分解法测算公共服务供给效率的区域差异及其贡献来源,之后借助混合回归检验其β收敛特征。研究结果表明:(1)中国公共服务供给效率呈现明显的“东高西低”梯度特征;(2)公共服务供给效率的差异主要来源于区域间差异,区域内差异次之,由超变密度引致的差异贡献最小。具体来看,公共服务供给效率的区域间差异呈现一定的周期性波动特征,区域内差异贡献和超变密度贡献则始终维持在低位徘徊;(3)全国总体及东部、中部、西部、东北四大地区公共服务供给效率均表现出明显的绝对β收敛和条件β收敛特征。

Based on the Super-SBM variable model of non-radial returns to scale,this paper measures the provincial public service supply efficiency from 2003 to 2020,and uses Dagum Gini coefficient and its decomposition method to measure the re⁃gional differences and contribution sources of public service supply efficiency,and then uses mixed regression to test itsβcon⁃vergence characteristics.The results go as below:(1)The efficiency of public service supply in China shows an obvious gradient characteristic of“high in the east and low in the west”.(2)The difference of public service supply efficiency mainly comes from the difference between regions,followed by the difference within regions,and the difference contribution caused by intensity of transvariation is the smallest.Specifically,the inter-regional differences in the efficiency of public service supply show certain cyclical fluctuations,while the intra-regional difference contribution and intensity of transvariation contribution remain low.(3)The efficiency of public service supply in the country as a whole and in the eastern,central,western and northeastern regions shows obvious absoluteβconvergence and conditionalβconvergence.