风蚀作用是指风力对地表岩土的破坏作用。它包括风直接的吹蚀作用和风沙的磨蚀作用，这两种作用彼此相辅相成。风蚀作用的强度取决于风速和地表物质结构及地形状况。风蚀作用以近地面23厘米高度内最强烈，许多风蚀微地貌（ 如石蘑菇） 都表现了这个特点。
此外，风的类型对土体的风蚀作用也不同。
Moreover, different type of wind affected soil samples in various ways.
植被盖度对风沙土风蚀作用的影响可划分为3种程度类型：大于60％为轻度风蚀和无风蚀；
According to its influences on wind erosion intensity, vegetation coverage falls into 3 intensity categories:> 60% is nonerodible to slightly erodible;
实验表明：净风对土表的风蚀作用微弱，即使在遭到大风吹刮时，土表的结壳仍不易受到破坏。
The experiment indicates that wind itself is of weak effect on ground surface erosion, so that the soil crust may not be destroyed even under great wind velocity.
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