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

Table 5

β values.

	0 d	1 d	3 d	6 d
β0	1	1	1	1
β1	0.401	0.285	0.339	0.400
β2	5.521	4.152	4.034	6.450
β3	0.170	0.133	0.107	0.185

Note. β₀ represents the indirect contribution of the roots of Eleusine indica compared with itself; β₁ represents the indirect contribution of the roots of Carex leucochlora compared with the indirect contribution of the roots of Eleusine indica; β₂ represents the indirect contribution of the roots of Zoysia japonica compared with the indirect contribution of the roots of Eleusine indica; β₃ represents the indirect contribution of the roots of Setaria viridis compared with the indirect contribution of the roots of Eleusine indica.