Fig. 3

Effect of different number of freeze–thaw cycles and water content on soil cohesion. (a) Shows the change of cohesion of loessial soil under different numbers of freeze–thaw cycles and water content; (b) shows the change of cohesion of sierozem under different numbers of freeze–thaw cycles and water content; (c) shows the change of cohesion of chernozem under different numbers of freeze–thaw cycles and water content.