PM2.5 Concentration in China: Distribution and Key Factors

The distribution of PM2.5 concentration in China varies significantly. Major cities like Beijing, Shanghai, and Guangzhou have consistently high PM2.5 levels due to industrial activities, traffic, and coal-fired power plants. These areas experience severe air pollution, often exceeding World Health Organization safe levels. Rural areas and remote regions generally have lower PM2.5 levels due to fewer industrial sources. However, certain areas, especially in northern China, suffer from 'smog' during winter caused by coal burning for heating. Overall, PM2.5 distribution in China reflects the complex interaction of industrialization, population density, and environmental policies.