How to prevent sandstorms?

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.

4. Control population growth, reduce the pressure of human factors on land and protect the environment.

5. Strengthen the popular science propaganda on the relationship between the occurrence and harm of sandstorms and human activities, and let people realize that once the living environment is destroyed, it will be difficult to recover, which will not only aggravate natural disasters such as sandstorms, but also form a vicious circle, and people should consciously protect their living environment.

6. Plant plants suitable for growing in desert arid areas, such as Hippophae rhamnoides, to form a ground cover plant layer, thus improving the ground cover environment, fixing the soil, reducing the wind speed, increasing the air humidity and improving the microclimate environment.

7. Plant local low shrubs and small trees on the edge of desert to improve vegetation distribution.

Extended data:

Causes of sandstorm weather in Beijing;

Beijing belongs to the piedmont alluvial fan. In the Quaternary geological period, the mountainous areas around Beijing were once covered with ice shells. Later, due to the warming of the atmosphere, the ice shell melted and cracked, and huge ice cubes slipped down the slope under the action of running water. This is how the Quaternary glacial scratches in Mosikou, Shijingshan District and the glacier boulders in badachu park were produced.

Glacier floods on the mountain push a lot of sediment and gravel down the mountain, forming an alluvial fan, which is located in the urban and suburban areas of Beijing. According to the principle of sedimentology, relatively large individual gravels are deposited first, and then coarse sand, medium sand, fine sand, silt and soil are deposited. Because of this, sand and gravel can often be seen at 8- 10 meters underground in Beijing.

In places close to the mountains, such as Shijingshan District, you can see the gravel by peeling off the thin topsoil. Because the underground sand in the urban area is deeply buried, it can only be seen when the infrastructure is dug. Sand will be exposed to the ground in major constructions such as repairing subways and building tall buildings.

The sand on the construction site will fly and spread under the action of strong wind. In recent years, Beijing has engaged in infrastructure construction with more than 1,000 construction sites, which is also one of the important reasons for the frequent sandstorms in Beijing in recent years. The windy or windy weather, drought and lack of rain and high temperature in northern China every spring are one of the necessary conditions for sandstorms.

In a sense, sandstorms in Beijing seem irresistible. In addition, cultivated land and garbage dumps in the suburbs of Beijing will also raise dust when the wind is strong in spring, which will become an important source of dust in Beijing. The number of cars in Beijing is increasing year by year. Automobile exhaust contains carbon particles that can't be completely burned, and it also increases inhalable particles in the air. Industrial boilers and domestic coal burning will also produce coal ash, which will become a source of dust.

Baidu encyclopedia-sandstorm

Baidu encyclopedia-? Beijing sandstorm