中文摘要：

本文采用中国地级市的空气质量指数（AQI）和地级市层面的统计数据,分析城市空气污染的治理机制及其作用效果。研究发现,空气污染转变城市的投资决策从而影响相关负责人的工作变动。空气质量越差,地区迫于保护和改善环境的压力,越会减少固定资产投资,加大环境污染治理投资。进一步分析发现：①当地方经济发展压力大时,空气质量并没有给城市带来显著的治理压力和投资决策影响,只有在城市经济发展压力较小时,地方的固定资产投资才会减少,同时伴随着环境污染治理投资的增加,以保证当地的空气质量。②当地方空气污染治理压力大时,空气质量越差,城市迫于环保压力,越会减少固定资产投资,增加环境污染治理投资,但短期内难以保证经济发展与环境保护相协调,从而影响相关责任人员的工作变动。③固定资产投资的减少可以提高空气质量,而环境污染治理投资对空气质量的改善没有影响。空气污染通过其治理机制影响地区经济发展决策的执行,推动地区绿色发展部署,加强大气污染治理和改善空气质量建设,进而有利于生态效益的提高,实现经济发展与环境保护相协调、人与自然和谐共处。

英文摘要：

Using Chinese air quality index（AQI） and the statistic data of cities,this paper analyzes the governance mechanisms of urban air pollution and its effects.The study finds that air pollution has impact on the investment decisions of the cities and the work changes of the man in charge.When facing high AQI,the city has to reduce the investment in fixed assets（FAI） and increase the investment in environmental pollution treatment（EPTI） because of the environmental protection pressure.Further analysis shows that：①In the city of huge local economic development pressure（LEDP）,the air quality has little significant impact on the governance and investment decisions.However,only in the city of tiny LEDP can the official to reduce FAI and increase EPTI to keep the local air quahty.②In the city of huge local air pollution treatment pressure,the higher the AQI is,the more likely the city reduces FAI and increases EPTI due to the pressure of environmental protection,which makes it difficult to ensure the coordination between economic development and environmental protection,and then affects the work changes of the man in charge.③It is reducing FAI instead of increasing EPTI that helps to improve the air quality.Air pollution has the impact on the implementation of regional economic development decisions through its governance mechanisms.Focusing on the deployment of green growth development,strengthening air pollution control and improving air quality,can help improve the ecological benefits,keep the coordination between economic development and environmental protection and realize the harmonious coexistence between human being and nature.