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为了定量评价净风吹蚀下植被覆盖地表的抗风蚀性能,利用移动式风蚀风洞对试验区地表进行原位测试。结果表明:不同风速下土壤风蚀量随植被盖度的增加呈指数规律减少,土壤防风蚀的植被盖度在30%以上较为显著;当风速为10m/s以上时,试验区的有效防风蚀植被盖度须达到40%以上,当风速为14～18m/s时,其有效植被盖度须达到60%～80%的水平。
In order to quantitatively evaluate the wind erosion resistance of the vegetation cover under net wind blown erosion, the surface of the experimental area was tested in situ by using the mobile wind erosion wind tunnel. The results showed that the amount of wind erosion under different wind speed decreased exponentially with the increase of vegetation coverage, and the coverage of soil wind erosion was more than 30%. When the wind speed was above 10m / s, the effective windbreak vegetation Coverage should be more than 40%, when the wind speed of 14 ~ 18m / s, the effective vegetation cover to reach 60% to 80% level.