Beijing is not only dusty, but also rainy. The sky is yellow. What is the main cause of dusty weather?

A few days ago, there was a big sandstorm in our country, and I still remember it clearly, because before that sandstorm, my memory of sandstorm was more than ten years ago, and I have hardly encountered a decent sandstorm in these ten years. That when I saw the sandstorm, I thought, what's wrong with the weather? The color is dim, the sky is covered, the sun is not visible, and it is not foggy. Foggy days should be gray.

I didn't know it was a sandstorm until I read the relevant news on the Internet. But where did this sandstorm come from? I am also very concerned about the ecological environment management in China. There are two brushes for ecological environment management in China. China has been taking a series of measures to prevent the desert from expanding in the north of China where desertification is serious, not only to prevent the desert from expanding, but also to turn the desert into an oasis. For the sake of desert control, China has not only built the Three-North Shelterbelt, but also adopted the measures of returning farmland to forest and grassland.

This series of measures effectively prevented the expansion of the desert in China, the forest coverage rate in China increased by110, and the Mu Us Desert, one of the four sandy lands in China, almost disappeared and became an oasis. The Mu Us Desert covers an area of more than 40,000 square kilometers, which is two or three times that of Beijing. Even such a large area will be solved by our sand control workers.

The source of sandstorm comes from Mongolia. In recent years, due to the single economic structure and overgrazing in Mongolia, the soil has been unable to be fixed. Coupled with the continuous warming of the weather, the water in the soil has decreased. Coupled with the powerful cyclone in Mongolia, a particularly large sandstorm has been formed. The sandstorm at that time not only affected Mongolia's own national ecological environment, but also affected our national ecological environment, which had a great impact on our national ecological environment. From Inner Mongolia to Northeast, from Northeast to Northwest, and from Northwest to North China.

1. There is dust and rain in Beijing, and the sky is yellow;

This sandstorm has come again, which has affected the air and environment in Beijing. This is not the first time that Beijing has been hit by a sandstorm. Before Beijing, there was a spectacle of blue sun because of sandstorm, and the visibility was very low. This time, Beijing was still affected by sandstorms, not only sandstorms, but also rain, which caused the sky in Beijing to be yellow. This sandstorm not only affected Beijing, but also 14 provinces. The sandstorm area in this 14 province is close to 520,000 square kilometers. Up to this year, there have been six or seven sandstorms in China.

Second, the main causes of dust weather:

The source of this sandstorm comes from Mongolia and parts of Inner Mongolia in China. This time it was mainly caused by Mongolian cyclone and cold high pressure weather system. In the past two years, the surface conditions in Mongolia and some parts of China are poor, the precipitation is scarce, and the temperature is still rising, which leads to the dry surface and provides sufficient conditions for the sandstorm trip.

Third, summary:

Subsequently, with the arrival of the rainy season, the sandstorm weather in the north will gradually decrease, because sufficient rain and rising atmosphere can also promote the growth of vegetation. Conversely, sandstorm weather will also decrease.