The main reasons for sandstorm weather in northern China are.

Over-exploitation of the environment by human beings is the main cause of sandstorms. The ecological environment in Hexi Corridor and Alashan Plateau has deteriorated seriously. In the 50 years since the founding of the People's Republic of China, the dried-up lakes have exceeded 500 km 2. 1.982 East Giant Rock Sea. 18m, Swan Lake 15m.

Now it has dried up, and the center and periphery of the lake have been covered with quicksand. Did the wetland around the dry lake form a semi-bare shrub sand pile? 6? 000? Haloxylon ammodendron forest in sandy land around the dry lake basin of km2 died in a large area, such as around Guaizi Lake and Gulinai Lake. 1982 The survival rate of Haloxylon ammodendron forest was 12%- 17%, and now it is on the verge of all death. 1982 there is still a large area of wetland in Ejina delta in the lower reaches of Heihe river basin. Now, due to the dry river, Populus euphratica and willow trees are dying in pieces.

Sandstorms in China mainly occur in northern areas. Since 1950s, sandstorms have occurred more and more frequently in northern China. After 2000, sandstorms occurred more than 10 times a year on average, with increasing frequency and expanding scope.