Top 10 cities with the worst air in the country

According to the comprehensive urban ambient air quality index evaluation, the top ten cities with the worst air in the country are: Xingtai, Shijiazhuang, Handan, Tangshan, Baoding, Jinan, Hengshui, Xi'an, Langfang, and Zhengzhou.

There are many reasons for urban air pollution, including both natural and man-made factors. Among them, natural factors include forest fires and other aspects. Human factors are more extensive, including industrial pollution, domestic pollution, automobile exhaust pollution and other aspects. In essence, air pollution in cities is closely related to people's daily activities. Moreover, domestic pollution is also a major cause of air pollution.

For example, some fossil fuels used in daily life will emit a large amount of smoke, dust, various toxic gases, etc. after burning, which will aggravate urban air pollution. In addition, in real society, various new products have also been widely used. And this will also increase air pollution. For example, Freon in refrigerators, pesticides used in daily life, etc., all cause air pollution.

The dangers of poor urban air quality:

When the concentration of pollutants in the atmosphere is very high, it will cause harm to the human body. When the concentration of pollutants is very high, it will cause acute harm to plants, causing lesions on the surface of plant leaves, causing branches and leaves to wither and fall off.

Air pollution will reduce the amount of solar radiation that reaches the ground, increase atmospheric precipitation, and also increase the probability of acid rain. Acid rain can destroy large areas of forests and crops, and can damage paper products, textiles, Corrosion and fragmentation of leather products, etc. can cause the anti-rust coating of metal to deteriorate and reduce the protective effect. It can also corrode and pollute buildings.