| Title |
Application of a Non-Point Source Model for the Prediction of Land Use Impact on Water Qualities |
| Authors |
최경식(Kyoung Sik Choi),나은혜(Eun Hye Na),박석순(Seok Soon Park) |
| Abstract |
This paper describes the application of a distributed non-point source model called AGNPS(Agricultural Non-Point Sources) to Bulno Cheon watershed. Deagu, Korea. All the required databases (soils, land use and topography) were assembled at 1: 250.000 scale. The study watershed was discretized into 85 grids, of which size is 500m x 500m. The model was calibrated and verified with the measured data. including the runoff flow, chemical oxygen demand, and total nitrogen. The model results displayed a good agreement with the field measurements for both calibration and verification. The validated model was utilized to predict an impact of urbanization on the runoff flow and pollution loads. The predicted results indicated that an urbanization would cause the runoff flow to increase significantly, but the pollution loads to somewhat decrease if all the livestock feedlots are eliminated from the study watershed with urbanization. |