Table 2. Variables responsible for the changes in the abundance, richness, and composition of various bacterial groups.

Index	Group	Results	r2	F	P
	Acidobacteria	y = 0.166–0.320 (water content)	0.318	10.278	0.004
	Proteobacteria	y = −0.510+0.103 (soil pH)	0.508	22.706	<0.001
abundance	Rubrobacteridae	y = 0.190–0.248 (water content)	0.197	5.411	0.030
	Betaproteobacteria	y = 0.015+0.136 (water content)	0.441	17.361	<0.001
	Deltaproteobacteria	y = 0.049–0.116 (water content)	0.234	6.730	0.017
	Gammaproteobacteria	y = 0.007+0.117 (water content)	0.567	28.763	<0.001
	Acidobacteria	y = 60.525+6.677 (soil temperature)	0.239	6.902	0.015
richness	Bacteroidetes	y = 24.184+18.237 (water content)	0.192	5.218	0.032
	Gammaproteobacteria	y = 14.768+44.975 (water content)	0.462	18.878	<0.001
	Bacteria	y = 0.878–357.383 (TN content)	0.415	15.612	0.001
		y = 0.914–297.430 (TN content) –2.213 (water content)	0.648	19.349	<0.001
	Acidobacteria	y = 0.326–3.938 (water content)	0.671	44.860	<0.001
composition		y = 1.700–3.130 (water content) –0.199 (soil pH)	0.746	30.838	<0.001
	Bacteroidetes	y = 0.273–3.298 (water content)	0.298	9.330	0.006
	Proteobacteria	y = −2.268+0.313 (soil pH)	0.261	7.757	0.011
	Deltaproteobacteria	y = −2.191+0.146 (soil temperature)	0.233	6.689	0.017