What are the dangers of sandstorm weather?
Sandstorms in my country are highly disastrous weather that occurs in the northwest and northern parts of North China. They can cause house collapse, traffic and power supply obstruction or interruption, fires, casualties of humans and animals, etc., pollute the natural environment, and damage crop growth. Sandstorms cause serious losses and great harm to the national economic construction and the safety of people's lives and property. The main hazards of sandstorms are in the following aspects:
(1) Deterioration of the ecological environment
When sandstorms occur, sand, stones and floating dust wrapped in strong winds spread everywhere, making the air in areas passing through turbid and choking. The number of people suffering from eye problems, respiratory diseases and other diseases is increasing. For example, during the severe sandstorm that occurred in Jinchang City on May 5, 1993, the measured dust content in the outdoor air was 1016 mg/cm3, and the indoor dust content was 80 mg/cm3, exceeding the national dust content in living areas. 40 times the standard.
(2) Impact on production and life
Sandstorm weather carries a large amount of sand and dust that blocks the sun and light, and the weather is gloomy, resulting in reduced solar radiation and poor visibility for several hours to more than ten hours. , it is easy to make people feel depressed and reduce the efficiency of work and study. In mild cases, a large number of livestock can be infected with respiratory and gastrointestinal diseases. In severe cases, it can lead to the death of a large number of "spring fatigue" livestock and scrape away fertile farmland, seeds and seedlings. Sandstorms will also intensify wind erosion and desertification of surface soil, covering plant leaves with thick dust, affecting normal photosynthesis and causing crop yield reductions.
(3) Loss of life and property
On May 5, 1993, a severe sandstorm occurred in Jinchang, Weiwu, Minqin, Baiyin and other cities in Gansu Province. 253 farmland areas were affected. ．550,000 acres, 42,800 trees were lost, causing direct economic losses of 236 million yuan, 50 deaths, and 153 serious injuries. On April 12, 2000, severe sandstorms occurred in Yongchang, Jinchang, Weiwu, Minqin and other cities. According to incomplete statistics, only Jinchang and Weiwu suffered direct economic losses of 15.34 million yuan.
(4) Traffic safety (traffic accidents such as airplanes and cars)
Sandstorms often affect traffic safety, causing planes to be unable to take off or land normally, causing damage to the glass of cars and train carriages, Outage or derailment.