FIG. 6. Sink-term profile for Collar Boundary Condition 1 (left) and 2 (right). Line colors refer to different root or soil parameterization: reference (black), xylem conductivity multiplied by 10 (blue), radial conductivity multiplied by 10 (green), and soil hydraulic conductivity multiplied by 10 (red). For clarity, the dashed line represents the normalized root length density (RLD) profile multiplied by 10.