Fig. 5. Normalized range of the Pareto optimal parameter values for the unirrigated Pumice soil type shown in Fig. 2 (thetaS = saturated volumetric water content; alpha and n are shape parameters; Ks = saturated hydraulic conductivity; d = rooting depth; 1, 2, and 3 = A, B, and C horizons). Extreme optimal Pareto parameter sets are indicated by bold and dashed lines.