城市扩张对经济效率的影响

Influences on urban economy of urban expanding

利用中国1996-2015年29个省区的面板数据分析了城市扩张对经济效率的影响。结果显示:从全国层面看,城市扩张的集聚效应和规模效应比较明显,能够有效提升经济效率;从空间层面看,西部地区城市扩张对经济效率的作用不明显,而其他地区城市扩张对经济效率的提升具有正向作用;中部地区人多地少的特点促使其城市扩张的集聚效应凸显,城市扩张对经济效率提升的作用最大;东部地区受到城市扩张边际效应递减的影响,导致其城市扩张对经济效率提升的作用最小。

This essay uses the panel data of 29 provinces during 1996-2015 to analyze the influences of urban expansion on economic efficiency. The results show that： Firstly,at the national level,the agglomerating effect and scale effect of urban expansion is so obvious to effectively improve the economic efficiency; Secondly,from the perspective of space,the urban expansion has no obvious effect on economic efficiency in western areas,while a positive effect on economic efficiency in other three regions; Thirdly,the characteristics of＂more people and less land＂in central areas leads to the agglomerating effect of urban expansion is prominent; therefore,the urban expansion plays the most important role in promoting economic efficiency;Fourthly,the eastern region is affected by the diminishing marginal effect of urban expansion,leading to the smallest role of urban expansion in promoting economic efficiency.