Located in the Xilingol League, the Hunshandake Sandland is one of the major sand-dust sources in China. Xilingol is not only a natural barrier of the Beijing-Tianjin-Hebei region, but it is also located in the border area between China and Mongolia. With the increase of sandstorm occurrences in the Xilingol region in recent years, research that tracks the sand storms that have an influence on this area is of great importance. For this research, the author selects three weather stations in Xilingol, the Naran-Bulag, East Ujimqin Banner, and Erenhot. First, the distribution characteristics of the dust storms occurring between 1980 and 2015 are analyzed. Then, the back-trajectories of the storms occurring between 2006 and 2015 are analyzed using the HYSPLIT model. The results show that the storms are concentrated across the three stations during the months of March, April, and May, followed by the months of June, July, and August. The majority of dust storms occur in the month of April, accounting for 56%, 49%, and 41% of all the storms recorded by each station respectively. After the Naran-Bulag and East Ujimqin Banner regions, the Erenhot region, which lacks rainfall and canopy vegetation, has the most storms. Of all the storms in Xilingol, 82% follow a path from northwestern Mongolia to southeastern Mongolia towards the Xilingol Inner Mongolia and originate in the desert regions of southeastern Mongolia and the desert areas in southern Kazakhstan. In Erenhot, 92% of all the storms originate in Mongolia. The results of this research aim to provide evidence for ecological construction and environment protection in Xilingol.
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