Fig. 7. Equivalent pore diameter at -100 cm H₂O of soil water matric head (d₁₀₀) for six soils (L1–L6) sampled along a soil texture gradient. Pore diameter was calculated from measured gas diffusivities and air permeabilities, Eq. [11]. The structurally disturbed soil is repacked soil that has been allowed to develop soil structure for 17 mo. Data from Schjønning et al. (1999) and present study