Fig. 8. (a) Log–log relationship of I/(_s – _i)^1/2 and the pore-size distribution index () for the 11 textural-class mean soils at 20 cm h^–1 rainfall intensity and an initial pressure head of –1500 kPa; (b) Log-log relationship of I/(_s– _i)^1/2 and the pore-size distribution index () for the 11 textural-class mean soils at 2.5 cm h^–1 rainfall intensity and an initial pressure head of –1500 kPa.