the surface of the earth is easy to be blowing dust and sand, but due to lose move large particle size, is formed not easily movable (suspension movement, it is small particle material guarantee to lose the necessary conditions of long distance move), and therefore can not move long lost, this is far from the dust in the dust and rare only micrometeorology main reason. If the wind last time is very long, form the dust suspended loads can be transported to a very far place, through which areas will appear sandstorm; When the winds weaken to certain degree, floating dust will the landing, the dust weather will appear. If the precipitation, can form the so-called "NiYu".
The formation process from the four conditions look, the loess plateau and vast desert and by the destruction of the human factors in the process of desertification is in the land of the north, at the end of the spring farming land and in the construction process of infrastructure (such as high speed road, etc.) for the dust storm occurrence providing full source material; And the spring drought in the north, and the likelihood of the sandstorm strengthened; The winds generated is a complex phenomenon, mainly is the cold air activities or to the circulation of the regulatory role longitude results. This shows the generation of sandstorm is DuoZhong complex factors results of human activity on the natural world to disruption of the desertification intensifies, dust storms happen to have an important role, and in recent years the global drought (the cause isn't yet known) abnormal weather phenomenon also to the dust storm occurrence have played an important role. So that human activities for the generation of dust storms only play a role, and can't say dust storms are caused by human factors.
The formation process from the four conditions look, the loess plateau and vast desert and by the destruction of the human factors in the process of desertification is in the land of the north, at the end of the spring farming land and in the construction process of infrastructure (such as high speed road, etc.) for the dust storm occurrence providing full source material; And the spring drought in the north, and the likelihood of the sandstorm strengthened; The winds generated is a complex phenomenon, mainly is the cold air activities or to the circulation of the regulatory role longitude results. This shows the generation of sandstorm is DuoZhong complex factors results of human activity on the natural world to disruption of the desertification intensifies, dust storms happen to have an important role, and in recent years the global drought (the cause isn't yet known) abnormal weather phenomenon also to the dust storm occurrence have played an important role. So that human activities for the generation of dust storms only play a role, and can't say dust storms are caused by human factors.
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