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Soil Hydraulic Parameter Upscaling for Steady-State Flow with Root Water Uptake

Dep. of Biological and Agricultural Engineering, 301B Scoates Hall, Texas A&M Univ., College Station, TX 77843-2117

View larger version (18K): [in a new window]   Fig. 1. Two different root water uptake distribution functions.

View larger version (25K): [in a new window]   Fig. 2. Influence of dimensionless root zone depth, *, on the dimensionless flux, qL*, when * = 1.0: (a) L* = 0.2; (b) L* = 5.2.

View larger version (23K): [in a new window]   Fig. 3. Influence of dimensionless transpiration rate, *, on the dimensionless flux, qL*, when * = 0.3: (a) L* = 0.2; (b) L* = 5.2.

View larger version (19K): [in a new window]   Fig. 4. Influence of * on the dimensionless flux, qL*, when * = 0.3: (a) L* = 0.2; (b) L* = 5.2.

View larger version (38K): [in a new window]   Fig. 5. Influence of dimensionless root zone depth * on the effective coefficient for the * field when * = 1.0 and CV = 1.0: (a) = 1.0, (b) = 6.0, and (c) = 10.0.

View larger version (38K): [in a new window]   Fig. 6. Influence of dimensionless transpiration rate * on the effective coefficient for the * field when * = 0.3 and CV = 1.0: (a) = 1.0, (b) = 6.0, and (c) = 10.0.

View larger version (30K): [in a new window]   Fig. 7. Influence of on the effective coefficient for the * field when * = 1.0 and * = 0.3: (a) CV = 0.5 and (b) CV = 1.0.

View larger version (32K): [in a new window]   Fig. 8. Influence of coefficient of variation of the * field on the effective coefficient for the * field when * = 1.0 and * = 0.3: (a) = 1.0, (b) = 6.0, and (c) = 10.0.