Table 4. Pearson's correlation analysis showing correlations (R values) between environmental variables and AMF root colonization.

Variable	pH	Salinity	OC	ON	P	CaCO3	SCC	SSC	SMC	AAR	M	m	Z	MC	Arb	Ves
pH	1
Salinity	0.00	1
OC	-0.41*	0.37*	1
ON	-0.25	0.23	0.43*	1
P	-0.02	-0.19	0.01	0.21	1
CaCO3	-0.18	0.25	0.41*	0.44*	-0.23	1
SCC	-0.10	0.00	0.05	-0.28	-0.15	-0.05	1
SSC	0.06	-0.07	-0.31(.)	-0.11	0.07	-0.40*	-0.65***	1
SMC	-0.30	-0.01	0.34(.)	0.13	0.01	0.38*	-0.15	-0.38*	1
AAR	-0.39*	0.01	0.39*	0.33.	0.27	0.40*	0.06	-0.41*	0.45*	1
M	0.23	0.06	-0.13	-0.33.	-0.14	-0.40*	0.13	0.06	-0.22	-0.69***	1
m	0.31(.)	-0.27	-0.39*	-0.71***	-0.24	-0.58***	0.17	0.19	-0.23	-0.75***	0.52***	1
Z	-0.35(.)	0.17	0.25	0.71***	0.17	0.45**	-0.32(.)	-0.06	0.25	0.69***	-0.65***	-0.87***	1
MC	0.32(.)	0.07	-0.13	-0.39*	-0.30(.)	-0.07	-0.15	0.24(.)	-0.19	-0.56***	0.45*	0.45*	-0.49***	1
Arb	0.30(.)	0.06	-0.11	-0.39*	-0.29(.)	-0.07	-0.14	0.26	-0.22	-0.56***	0.45*	0.44*	-0.50***	0.99***	1
Ves	0.20	-0.05	-0.08	0.01	0.13	-0.10	-0.38*	0.25	0.00	-0.10	0.06	0.00	-0.01	0.45*	0.41*	1

Salinity, soil salinity; OC, soil organic carbon; ON, soil organic nitrogen; P, available P; CaCO₃, total calcium carbonates content; SCC, soil clay content; SSC, soil sand content; SMC, soil moisture content; AAR, average annual rainfall; M, maximum temperature of the warmest month; m, minimum temperature of the coldest month; Z, altitude; MC, total Mycorrhizal colonization, Arb, Arbuscular colonization; Ves, Vesicle colonization. Significant R values are written in bold font. Significance level: ‘.’correlation is significant at P < 0.1.

‘*’correlation is significant at P < 0.05.

‘**’correlation is significant at P < 0.01.

‘***’correlation is significant at P < 0.001.