Hazards and benefits of sandstorms

Hazards of sandstorms: When sandstorms occur, there are dust and floating dust wrapped in strong winds everywhere, and the number of people suffering from air turbidity, choking nose and eyes, respiratory tract and other diseases increases.

A lot of dust carried by sandstorm weather blocked the sun, and the weather was gloomy, which led to the decrease of solar radiation. A few hours to ten hours of poor visibility can easily make people feel depressed and reduce the efficiency of work and study.

Benefits of sandstorm: Sandstorm can effectively alleviate acid rain and dusty weather, and dust is rich in alkaline cations such as calcium, which can effectively neutralize acid rain.

Dust particles are beneficial to cloud formation and rainfall. The dust particles are not round and the surface is uneven, which is very conducive to the condensation of water vapor on them. In most parts of northwest China, although the annual rainfall is only about 50 mm, the annual evaporation is as high as about 2000 mm, and the climate is extremely dry, but there are a lot of clouds in the sky.

Extended data:

Preventive and control measures

1. Strengthen environmental protection and raise it to the height of legal system.

2. Restore vegetation, strengthen biological protection system and prevent sandstorms. Protect and restore forest and grass vegetation according to law, prevent further expansion of land desertification, and minimize dust sources.

3, according to the local conditions in different regions, formulate disaster prevention, disaster prevention and relief plans, actively promote various disaster reduction technologies, and build a model project, and gradually promote it from point to area to further improve the regional comprehensive defense system.