交通密度对大气污染的实证研究

Based on the air quality data of 111 key environmental cities in China from 2003 to 2012, this paper explores the impact of traffic density on PM10 concentration in the process of urbanization in China. The results show that (1)the influence of traffic density on PM10 concentration is positive. (2) The influence of urban traffic density on PM10 concentration in different regions is also different. The influence of urban traffic density on PM10 concentration in the eastern region is also positive, while the PM10 pollution and traffic density in the central and western regions show a positive "U" Type of non-linear relationship. (3) After considering the endogeneity relationship between traffic density and air pollution, the results show that the traffic density and the air pollution show obvious exogenous relationship.