Application of RUSLE and MUSLE for Prediction of Soil Loss in Small Mountainous Basin

Abstract

Abstracts: This study aims to predict the amount of soil loss from Mt. Palgong's small basin, by using influence factors derived from related models, including RUSLE and MUSLE models, and verify the validity of the model through a comparative analysis of the predicted values and measured values, and the results are as follows: The amount of soil loss were greatly affected by LS factor. In comparison with the measured value of the amount of total soil loss, the predicted values by the two models (RUSLE and MUSLE), appeared to be higher than those of the measured soil loss. Predicted values by RUSLE were closer to values of measured soil loss than those of MUSLE. However, coefficient of variation of MUSLE were lower, but two model's coefficient of variation in similar partial patterns in the prediction of soil loss. RUSLE and MUSLE, prediction soil loss models, proved to be appropriate for use in small mountainous basin. To improve accuracy of prediction of soil loss models, more effort should be directed to collect more data on rainfall-runoff interaction and continuous studies to find more detailed influence factors to be used in soil loss model such as RUSLE and MUSLE.

Estimation of Sediment Yield Using Total Sediment Yield Formulas and RUSLE

“…Mitas and Mitasova (1998), using Geographic Information System (GIS), conducted a multi-dimensional simulation for soil loss and sediment. Jung et al (2014) applied RUSLE and Modified Universal Soil Loss Equation (MUSLE) for prediction of soil loss in small mountainous basin. The study showed RUSLE and MUSLE proved to be appropriate for use in small mountainous basin.…”

Characteristics of Sediment Discharge Based on GIS Spatial Analysis of Area Damaged by Debris Flow

“…국내 산림유역에서 토사유출량 예측에 관한 연구는 범용 토양유실예측공식(USLE, Universal Soil Loss Equation, Wischmeier and Smith, 1978), 수정범용토양유실예측공식 (RUSLE, Revised Universal Soil Loss Equation, Renard et al, 1991)을 이용한 연구가 대부분이다 (Lee, 1994;Son, 2001;Youn et al, 2007). 일부에서는 MUSLE, WEPP 등을 이용하 여 토사유출량에 관한 연구를 수행하기도 하였다 (Kim et al, 2007;Jung et al, 2014). 그러나 이러한 연구들은 단순히 해당 지점⋅지역의 강우로 인한 평시 토사유출량을 계산하 기 위한 경험적 산정기법 또는 물리적 모델로써 산사태⋅토 석류 피해 규모를 고려한 것은 아니다.…”