Fig. 6. Shrinkage curves (SCs) and the corresponding micro and macropore volume (Vp^µ and Vp^m) of two clayey soils in Senegal: (a) vertisol, and (b) ferralitic soil. For the swelling soil case (Fig. 6a) Curve 1 is the modeled w_bs water pool contribution (K_bsw_bs + V_A) to the SC when K_st = 0.4 and Curve 2 when K_st = 0. (Points A, B, C, and D are the initial parameters determined by the exponential model (XP) with taking K_st = 0.4; Points C'', D'', E'', and F'' were obtained by CARHYS using the pedostructure (model for SCs) model with K_st = 0).