【摘要】 文章从空间均衡的逻辑出发,提出如果用控制城市人口规模的方式来治理城市病,那么城市的增长、宜居、和谐三个目标就不能同时实现。实证结果发现,人口规模扩大并没有带来严重的污染和拥堵问题。因此控制城市人口规模,不仅无法有效地治理城市病,还会带来社会的不和谐。现实中,规划、人口流动障碍、土地政策带来的扭曲,导致中国最优城市规模低于潜在水平。文章认为,如果在城市加强基础设施和公共服务的供给侧改革,加快外来人口的市民化,可以使潜在的最优城市规模扩大,同时实现经济增长、生活宜居与社会和谐三个目标。更多还原

【Abstract】 We conclude from research based on a spatial equilibrium model that if the government wants to cure urban diseases by controlling urban population, the three aims in term of growth, harmony, livability could not be achieved simultaneously. Meanwhile, empirical results show that a larger population scale in city does not lead to serious pollution and congestion. This means that controlling population does not relieve urban diseases efficiently, but undermines social harmony. On the other hand, the optimal city size estimated with data of Chinese cities, which we often make use of, is always below the potential size because of distortion from city planning, migration barriers and land policy. And if we implement supply-side reforms to improve urban infrastructure and public services, as well as help the migrants to be integrated into urban society, the cities will move toward the potential scale, and all three aims of growth, harmony, livability can be achieved.更多还原