Research on the Strength Variation of Root-Clay Systems under Freeze-Thaw Action

Table 1

Parameters of the roots.

Root type	Root density; (%)	Average diameter (mm)	Average length; (mm)	Longitudinal elongation gradient (%)
Zoysia japonica	0.46%	0.379	68	0.334%
Carex leucochlora	0.23%	0.505	112	0.175%
Eleusine indica	0.20%	0.742	95	0.295%
Setaria viridis	0.17%	0.983	81	0.790%