In April of this year, our country suffered the most powerful sandstorm disaster in recent years, with a loss of 6 5 billion U S  dollars  The occurrence of sandstorm generally requires three conditions which are abundant sand and dust sources, strong winds and unstable atmospheric structure, namely, on sandy ground and bare ground without vegetation, the air is easily heated to blow up the dust
On the opposite side of Hulun Buir's degradation field, the grass height of Mongolian grassland is about 1 meter, and there are tens of thousands of yellow sheep moving there.
 This shows that the grassland degradation and desertification caused by climate drought will inevitably cause a natural disaster such as sandstorms