Fig. 4. Examples of shrinkage (ShC) and water retention curves (WRC) measured simultaneously with the fitted VG equations, for Cambisols with (a) 17% and (b) 14% of clay, Vertisols with (c) 46% and (d) 51% of clay, and Fluvisols with (e) 8.5% and (f) 42% of clay. Abscissa: gravimetric water content W. Ordinates: specific bulk volume V (black solid line), fitted VG-modified equation (black dashed line), suction (gray solid line), and fitted VG equation (gray dashed line).