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- W1987068243 abstract "The growing interest in simulation of water and solute movement in soils is in response to the need for development of solutions for various agricultural and environmental management problems. In order to be able to adopt models for simulation of the effects of various soil management practices with confidence, it is important that the capabilities of these models and credibility of their results be tested. In this study, predicted soil-water contents by the simple LEACHW and comprehensive ecosys models are compared against field measurements using TDR during a selected period with heavy precipitation. A detailed examination of actual soil-water status, during and after intense precipitation events showed an underestimation of actual drainage fluxes by LEACHW. Such events contribute most in the production of drainage fluxes. Differences in algorithm adopted by the two models are presented and discussed. The algorithm of ecosys resulted in more dynamic water fluxes between layers, which has resulted in better-predicted results than LEACHW, especially at the soil surface. Overall, performance of the two models was found to be reasonable for prediction of soil-water. Copyright © 2003 John Wiley & Sons, Ltd. L'intérêt grandissant dans la simulation du mouvement de l'eau et des solutés dans les sols répond au besoin de développer des solutions de plusieurs problèmes de gestion agriculturelle et ecologique. Afin de pouvoir choisir avec confiance des modèles pour la simulation des effets de certaines pratiques de la gestion du sol, il est important que les capacités de ces modèles and la crédibilité de leurs résultats sont verifiées. Dans cet article, le contenu de l'eau dans le sol prévu par des modèles simples LEACHW et des modèles complets ecosys est comparé aux mesures sur le terrain en utilisant TDR pendant une période choisie de fortes précipitations intenses, a montré que LEACHW a sous-estimé les flux actuels de drainage. De tels évenements contribuent le plus dans la production de flux de drainage. Des différences d'algorithme adoptées par les deux modèles sont presentées et examinées. L'algorithme d'ecosys a mené à des flux d'eau plus dynamiques entre les couches, ce qui a fourni des résultats mieux prévus que LEACHW, surtout a la surface du sol. En général, on a trouvé la performance de deux modèles raisonnable pour la prévision de l'eau du sol. Copyright © 2003 John Wiley & Sons, Ltd." @default.
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- W1987068243 date "2003-01-01" @default.
- W1987068243 modified "2023-10-01" @default.
- W1987068243 title "Field evaluation and comparison of two models for simulation of soil-water dynamics" @default.
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- W1987068243 doi "https://doi.org/10.1002/ird.88" @default.
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