Wind Tunnel Experimental Study on Soil Wind Erosion Control with PAM

Soil wind erosion is one of the most serious land degradation problems in the arid and semi-arid regions.Wind tunnel experiments were conducted to Research the change process of soil wind erosion with the change of PAM controlling the soil wind erosion under the condition of the constant wind velocity of 14 s/m and the constant blown angle of 5°.Two soils were used in the process of experiments,the clay content of which is 28.0% and 15.2%, respectively.The study results indicated that using PAM on the soil surface could enhance the capability of soil avoiding the wind erosion,at the same time,the effect of controlling wind soil erosion with 4 g/m2 PAM was better than with 2 g/m2 PAM.The prophase PAM used in the soil could not increase the capability of soil avoiding the wind erosion much more.Soil with higher clay content has the higher capability preventing soil from wind erosion than one with less clay content under the together action of PAM and water.