中文摘要：

SO2作为一种常规污染物在1990年代初就受到中国政府的重点管控。文章利用2002-2012年我国113个城市的人均SO2排放量面板数据探讨了我国人均SO2排放量变化的内在规律,使用静态和动态面板数据的回归方法检验了市级人均SO2排放量的收敛性,并分析了人均SO2收敛速度的影响因素。实证结果显示：在全国范围及东、中、西部三大区域内,城市人均SO2排放量存在着绝对与相对收敛;在影响收敛速度的各因素中,人均收入的提高可以加快人均SO2排放的收敛速度,而人口密度的增加则会降低人均SO2排放量的收敛速度。

英文摘要：

As a representative of traditional pollutants,SO2 has been under active control of Chinese government since theearly 1990 s. In order to investigate the innate principles of the evolvement of per capita emissions of SO2 in China,we use thepanel data of per capita emissions of SO2 collecting from 113 cities in China. We examine the convergence of per capita emis-sions of SO2 at municipal level by employing the regression method of static and dynamic panel data,and analyze the influ-encing factors of SO2 convergence speed. The empirical results show that there is absolute and relative convergence of urbanper capita emissions of SO2 within the whole nation as well as in the eastern,central and western regions. Among the factorsthat would influence SO2 emissions,higher per capita income would increase the convergence speed,while population densi-ty is negatively related with the convergence speed.