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Discusses how different land cover types in Otindag Sandy Land and Bashang area of Hebei Province are linked to a material source of sand stormy weather in Beijing based on results of field vegetation and soil survey and laboratory works. How results of grain size analysis show that dust release potential in per unit area of moving sandy land is small, while lowland meadow and meadow steppe in stony hills have high potential of releasing dusts in per unit area during sand stormy weather occurrence; Reference to further consideration of the effects of vegetation in which it is inferred that the moving sandy land served as a material source of past dust storm and the possibility of dust release in per unit area is low in current time; Focus on how a typical steppe in stony hills is undergoing desertification and its dust release possibility in per unit area is high; Potential for farmland to release dusts when they are ploughed in spring; Growth of a large amount of therophytes which prevents dusts from release when cultivation was terminated; How the potential for dust release in per unit area in fixed sand dunes, stony mountain meadow steppe and lowland meadow are low due to high cover of perennials; Focus on sand dune reactivation and desiccation of lakes and lowlands.