Why is there frequent sandstorm and windy weather this year? Can dusty weather be cured?

Dust weather can be cured, but it needs our constant efforts. I still remember when we were very young, we could see yellow sand all over the sky almost every year. With the strong wind sweeping, the yellow sand covering the sky invades cities and villages, which has a serious impact on people's travel and human health. The cause of sandstorm weather lies in the invasion of desert and strong wind. The desert situation in China is improving year by year, mainly in the sand prevention and fixation projects. Compared with more than ten years ago, the frequency of sandstorm weather invasion has become very low, which has to be attributed to those people who have made efforts to prevent and control desertification.

First, the causes of dust weather

The reasons for the formation of dusty weather are: first, strong wind, which is the prerequisite for raising dust; The second is sand dust, a lot of sand on the ground, which is the basis for the formation of sand dust storms. Green vegetation is often difficult to produce sand. The unstable state of the atmosphere is also a factor that causes sandstorms. Usually, the impact of sandstorms in spring is the most severe, because the land is in a dry state during this period, there is little precipitation, and the wind force increases in spring, which leads to sandstorms.

Second, sand prevention and fixation

Sand prevention and sand fixation project is very important to control dust weather. We all know that dust weather mainly comes from desert, so desert control is imminent. At present, the main means to prevent desertification is to form grass squares in all directions with straw or straw, and then insert shovels into the sand. Some grass seeds and dry wheat straw fall off to form fertilizer and seeds, which can effectively promote the germination and growth of seeds in the grass grid after precipitation in the desert, and can also effectively prevent the wind-blown sand from advancing with the wind.

Three, a variety of trees, prohibit deforestation.

In the face of dusty weather, we should plant more trees, green the environment, prohibit illegal felling of trees, cause soil erosion and sand, and make full use of arbor day and other activities to plant a large number of trees to prevent frequent outbreaks of dusty weather.