Table 5.

The correlation between the environmental factors and soil bacterial community structure revealed by Monte Carlo permutation test.

Factor	RDA1	RDA2	r2	P value
Latitude	−0.5127	0.8586	0.7556	0.041
Longitude	−0.5574	0.8303	0.6697	0.076
Altitude /m	0.6115	−0.7912	0.7501	0.026
Soil pH	−0.9203	0.3913	0.1626	0.661
Soil TP /g kg−1 DW	−0.9855	−0.1699	0.4959	0.169
Soil WSP /mg kg−1 DW	−0.5561	0.8311	0.8258	0.024
Tree age /years	−0.5679	0.8231	0.7321	0.039

WSP, the water-soluble phosphorus content; TP, the total phosphorus content.