عنوان مقاله [English]
نویسنده [English]چکیده [English]
Although solutions of transient water flow can be obtained by numerical modeling, their application may be limited in part as root water uptake is generally considered to be one-dimensional only. The objective of this study was to evaluation accuracy of two-dimensional root water uptake model by Hydrus-2D in the Lysimeter. The root water uptake model was incorporated into a two-dimensional flow model, and parameters of governing equation were optimized based on minimizing the residuals between measured and simulated water content data. Water content was measured at different points and layers. To calibrate the flow, a genetic algorithm was used. With the optimized parameters of model, simulated and measured water contents during the 30 days period were in excellent agreement. Based on results, R2 values generally ranging between 0.92 and 0.94 and a root mean squared error (RMSE) of 0.0236 m3m-3. In this Paper effect of soil hydraulic properties on Hydrus simulation was evaluated by several predict of neural network. Finally, Result illustrated that Hydrus-2D is extremely flexible in simulation of soil water content pattern.