Modeling root water uptake when calculating unsaturated flow in the vadose zone and groundwater recharge |
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| Authors: | S O Grinevskii |
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| Institution: | (1) Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853-5701, USA;(2) Wageningen University and Research Centre, c.o. Paaskamp 16, Roden, 9301 KL, The Netherlands |
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| Abstract: | This paper considers models of the transpiration root water uptake and principles for substantiating their parameters when
calculating unsaturated flow in the vadose zone and estimating infiltration groundwater recharge. The possible use of generalized
parameters for different landscape and soil conditions is substantiated based on analyzing the natural patterns of water balance
formation in the vadose zone and the sensitivity of transpiration models. Recommendations are given for selecting the models
of transpiration water uptake and substantiating their parameters, which enables one to minimize the errors in estimating
infiltration groundwater recharge. |
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