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Filters: Tags: Soil?water model (X) > partyWithName: Caldwell, Martyn M (X) > partyWithName: Orr, Douglas V (X) > partyWithName: Leffler, A Joshua (X) > partyWithName: Yoder, Carolyn (X) > partyWithName: Ryel, Ronald J (X)

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The significance of soil water redistribution facilitated by roots (an extension of "hydraulic lift", here termed hydraulic redistribution) was assessed for a stand of Artemisia tridentata using measurements and a simulation model. The model incorporated water movement within the soil via unsaturated flow and hydraulic redistribution and soil water loss from transpiration. The model used Buckingham-Darcy's law for unsaturated flow while hydraulic redistribution was developed as a function of the distribution of active roots, root conductance for water, and relative soil-root (rhizosphere) conductance for water. Simulations were conducted to compare model predictions with time courses of soil water potential at several...