식생여과대 유사 저감 효율 산정을 위한 정규화 방안

초록

Vegetative Filter Strip (VFS) is the best management practice which has been widely used to mitigate water pollutants from agricultural fields byalleviating runoff and sediment. This study was conducted to improve an equation for estimating sediment trapping efficiency of VFS using severaldifferent regularization methods (i.e., ordinary least squares analysis, LASSO, ridge regression analysis and elastic net). The four different regularizationmethods were employed to develop the sediment trapping efficiency equation of VFS. Each regularization method indicated high accuracy in estimatingthe sediment trapping efficiency of VFS. Among the four regularization methods, the ridge method showed the most accurate results according to R2,RMSE and MAPE which were 0.94, 7.31% and 14.63%, respectively. The equation developed in this study can be applied in watershed-scalehydrological models in order to estimate the sediment trapping efficiency of VFS in agricultural fields for an effective watershed management in Korea.

키워드