Variation Characteristics and Influencing Factors of Air Pollution Index in China
中国空气污染指数变化特征及影响因素分析

Based on the daily air pollution index (API), primary pollutant, air quality level and status of 42 cities in China during 2001-2010, the characteristics of air quality were analyzed. The results showed that the atmosphere was significantly influenced by consumption of coal. The primary pollutant was PM10, and the air quality status was excellent (0