Schools in Baotou, Inner Mongolia, were suspended due to sandstorms. Why are sandstorms in the north so severe?

Speaking of sandstorms, most northerners are familiar with this term. In the past, northern cities were prone to sandstorms every spring and autumn. Large-scale sand and dust blew into the city with strong winds, seriously affecting people's lives. The yellow sand in the sky not only reduces visibility and greatly affects people's field of vision, but the sand and dust flying everywhere with the wind can also make people feel depressed when they breathe, and they will feel like they are covered in sand when they go out. Therefore, many northerners were often troubled by sand and dust weather in the past. Afforestation can quickly improve sand and dust weather

The emergence of sand and dust storms is ultimately due to the destruction of vegetation and the inability to fix the sand in the soil. At the same time, the reduction of vegetation has also caused more and more deserts to appear. For these reasons, every spring and autumn, once there is strong wind, the sand will be blown up by the wind and fly to the places where people live, forming sand and dust weather. Later, with the rise and popularization of returning farmland to forest and afforestation, people's awareness of protecting tree vegetation became stronger and stronger, and sand and dust weather gradually improved, and sand and dust weather rarely occurred in many northern areas. Strong sand and dust weather occurred in Inner Mongolia

On the evening of March 14, a large-scale strong sand and dust storm occurred in Baotou City, Inner Mongolia. The Baotou City Meteorological Observatory issued a yellow sand and dust storm warning signal at 21:00 on March 14, and issued a sand and dust storm warning signal at 23:50. Orange warning signal, sandstorm weather is still continuing in Baotou City, with a minimum visibility of 100 meters and a maximum wind speed of 22.3 meters/second.

After research by the Party Committee of the Baotou Municipal Education Bureau, it has been decided that all kindergartens, primary schools, and junior high schools in the city will have a one-day holiday on March 15, and high schools will have a half-day holiday on the morning of March 15, subject to further decisions. I hope all parents will be aware of this. All parents who have not received notification have sent their students to school and asked the school to make appropriate arrangements to ensure the safety of teachers and students in the school. Students who live on campus are asked to arrange self-study arrangements and cancel all outdoor activities.

The sandstorms in Inner Mongolia are very serious and have affected people's normal life. Not just Inner Mongolia, many northern regions, such as Beijing, Hebei, Northwest China, etc., have experienced widespread sand and dust weather. In some areas, strong sand and dust weather occurred with visibility below 500 meters. The reappearance of sand and dust weather is also a manifestation of climate and environmental changes. It also reminds us that we must pay more attention to protecting the environment. Only by planting more trees and protecting vegetation can we reduce the occurrence of sand and dust weather.