Taking the wind-break and sand-fixing forests in the Bashang area of northern Hebei as the research object

the effects of three artificial shrublands (Hippophae rhamnoides Linn. Caragana korshinskii and Salix pasmmophia) on wind erosion prevention were compared and analyzed by observing wind speed

surface roughness

critical sand-blown wind speed

sand transporting quantity and wind-sand flow structure. The results showed that artificial shrubland could increase the surface roughness

change the near-surface wind field and wind-sand flow structure

reduce the wind speed

reduce the sand transporting quantity

and consequently effectively control soil wind erosion. The effects of different artificial shrublands on wind erosion prevention were quite different. From the main observation indicators

roughness and critical sand-blown wind speed:Caragana korshinskii > Hippophae rhamnoides Linn. > Salix pasmmophia; sand transporting quantity:Caragana korshinskii < Hippophae rhamnoides Linn. < Salix pasmmophia; windbreak effect:Hippophae rhamnoides Linn. > Salix pasmmophia > Caragana korshinskii; sand fixation effect:Caragana korshinskii > Hippophae rhamnoides Linn. > Salix pasmmophia. The characteristics of windbreak

sand fixation and soil and water conservation of trees should be fully utilized. The biological desertification control technology and measures should be used for ecological construction in Bashang area of northern Hebei

and ultimately for controlling soil wind erosion and improving the ecological environment.