This paper first constructs a comprehensive evaluation system for the construction of new infrastructure,and then uses a three-stage DEA model to measure the efficiency of new infrastructure construction from 2008 to 2021.In addition,based on the differences in urban scale,we discuss the impact of the efficiency of new infrastructure construction on common pros-perity.We find that firstly,the overall efficiency of new infra-structure construction shows a trend of first decreasing and then increasing,showing an imbalance,that is,mega and super-large cities show a rapid upward trend,while large cities,medi-um-sized cities,and small cities show varying degrees of down-ward trend.Secondly,intra-group disparities are the main source of non-equilibrium,with the contribution rate of intra-group disparities in mega cities slowly decreasing,while large,medium-sized,and small cities are showing a rapid expansion trend.In addition,the efficiency of new infrastructure construc-tion is conducive to achieving common prosperity,but its per-formance in urban scale varies.It only shows an overall prosper-ity effect for mega and super-large cities,a shared prosperity effect for large and medium-sized cities,and has no impact on small cities.Finally,the optimal urban population size for the common prosperity effect of the efficiency of new infrastructure construction is 1.671-3.757 million.This study provides refer-ences for promoting the rational layout of new infrastructure in urban construction systems.
efficiency of new infrastructure construc-tionurban sizecommon prosperitythree-stage DEA
NETL
NSTL
万方数据
