Table 1.

The impacts of environmental factors on the soil bacterial diversity of sequences obtained using the 338f/806r primer set targeting the V3–V4 region.

V3–V4 (Shannon Diversity)	Estimate	t	p	RI
(Intercept)	6.727	14.906	<0.0001
MAP	0.005	5.803	<0.0001	0.7029
NH4N	0.111	2.431	0.0246	0.1461
SOC	−0.063	−3.344	0.0032	0.1510

MAP, mean annual precipitation; NH4N, ammonia nitrogen; SOC, soil organic carbon; RI, relative importance calculated from the multiple regression models.