REVIEW

Applicability of the Wind Erosion Prediction System for prediction of soil loss by wind in arable land

Kyo-Suk Lee1   Il-Hwan Seo1   Sang-Phil Lee2   Chul-Soon Lim1   Dong-Sung Lee3   Se-Won Min Seo1   Hyun-Gyu Jung1   Jae-Eui  Yang2,*   Doug-Young Chung1,*   

1Department of Bio-environmental Chemistry, College of Agriculture and Life Science, Chungnam National University, Daejeon 34134, Korea
2Department Kangwon Institute of Inclusive Technology, Kangwon National University, Chuncheon 24341, Korea
3Manager, National Agricultural Cooperative Federation, Seoul 04517, Korea
4Department of Biological environment, College of Agriculture and Life Science, Kangwon National University, Chuncheon 24341, Korea

Abstract

The precise estimation of accelerated soil wind erosion that can cause severe economic and environmental impacts still has not been achieved to date. The objectives of this investigation were to verify the applicability of a Wind Erosion Prediction System (WEPS) that expressed the soil loss as mass per area for specific areas of interest on a daily basis for a single event in arable lands. To this end, we selected and evaluated the results published by Hagen in 2004 and the soil depth converted from the mass of soil losses obtained by using the WEPS. Hagen’s results obtained from the WEPS model followed the 1 : 1 line between predicted and measured value for soil losses with only less than 2 kg·m-2 whereas the values between the measured and predicted loss did not show any correlation for the given field conditions due to the initial field surface condition although the model provided reasonable estimates of soil loss. Calculated soil depths of the soil loss by wind for both the observed and predicted ones ranged from 0.004 to 3.113 cm·10 a-1 and from 0 to 2.013 cm·10 a-1, respectively. Comparison of the soil depths between the observed and predicted ones did not show any good relationship, and there was no soil loss in the predicted one while slight soil loss was measured in the observed one. Therefore, varying the essential model inputs and factors related to wind speed and soil properties are needed to accurately estimate soil loss for a given field in arable land.

Figures & Tables

Fig. 1. Simulation geometries of Wind Erosion Prediction System (WEPS) model to figure out soil loss by wind in field base.