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Comparing the performance of root-water-uptake models

Abstract:

We used the soil water budget model SWATRE to study the performance of four root-water-uptake models. The models were run with simplified initial and boundary conditions and showed agreement with regard to the cumulative water loss over a period of 20 d, if the input data and parameter values were adjusted. They resulted, however, in significantly different daily water extraction depth patterns. The most sophisticated model appears to contain a number of redundant terms, and the least complicated model could not be applied when a water table was present. © 1985 The Williams & Wilkins Co.