Inhibition of wind erosion by SBR polymer and Bacillus pasteurii microorganism (Case study: Jabal Kandy region)

Wind erosion is one of the main causes of soil and environmental degradation, the transfer of suspended particles and its sediment in irrigation and drainage networks. Due to the monsoon winds of the region, the erosion of the agricultural lands will attack the agricultural lands of the East and West Azarbaijan provinces and will have devastating effects on environmental resources and economic facilities. The high cost of using mulch and its destructive effects on the environment has led to the use of new and more environmentally-friendly materials. In this research, the effect of SBR resin polymeric material and Bacillus pasteurii microorganism on the control of wind erosion and dust storms in Jabal Kandi region have been evaluated. To simulate soil erosion, a wind tunnel with a velosity range of 0 to 15 m/s at a height of 15 cm from the bottom of the tunnel has been used. According to the results, in samples, with increasing wind speed, the amount of soil erosion increases exponentially, so that in the control sample, up to 7 m/s, the amount of soil erosion is negligible, but the velocity rate of soil erosion from 5.51 to 240 Kg/m2/hr has increased from about 7 m/s to about 15 m/s. Also, the trend of increasing the amount of soil erosion in a sample stabilized by microorganisms is very slow and at a speed of 15 m/s, it is equal to 1.1 kg/m2/hr and in the polymer- stabilized sample is almost zero. To test the surface resistance of stabilizaed soil samples, an penetration resistance test was used which according to the results, the mean value of the penetration resistance in the samples treated with microorganism and polymer was 58 and 76 kPa, respectively, while the penetration resistance of the control sample is 15 kPa.