Abstract
To evaluate fertilization effect of the Mekong River flood and inundation, we modeled phosphorus transport. Using this model, fertilization effect and effect of inundation on agriculture were evaluated. We obtained the following conclusions; 1) Settling velocity of phosphorus was calibrated to 0.25m/day. 2) Considering wind effect for settling velocity of phosphorus improve the model especially at the edge of flood plain. 3) Fertilization effect was evaluated spatially and quantitatively. Except for some edge areas of flood plain there are fertilization effect. 4) Effect of inundation on agriculture was evaluated spatially and quantitatively. Some areas need application of fertilizer for current production.
