1. Tree planting , and forestation can effectively prevent sandstorms.

2. There are also dust storms and sandstorms.

3. Sandstorms occur with much less frequency than dust storms.

4. Sandstorms and high level jet stream always occurred together.

5. The shamal, a northwesterly wind common during June and July, causes dramatic sandstorms.

6. Sandstorms and Dust storms both affect Mecca almost every month but especially during summer months.

7. Sandstorms, common during February and May, damage vegetation and prevent grazing.

8. The big - range and strong sandstorms are mostly accompanied with strong Mongolian cyclone and cold front.

9. We should reinforce our efforts in tree planting , and forestation making to prevent and cure sandstorms.

10. Spring in the city is dry and windy, occasionally seeing sandstorms blowing in from the Gobi Desert, capable of lasting for several days.

11. For example, the magazine China Today says that sandstorms, along with other factors such as deforestation and overgrazing, “have accelerated the expansion” of desert areas.

12. Natural hazards in Mali include: Desert sandstorms in the north Dust-laden harmattan wind is common during dry seasons, bringing a dust haze which may ground aircraft and damage computers and sensitive electronics and machines, as well as aggravating respiratory diseases.