Table 4.

Results of the two-way ANOVA showing the impacts of stand types and soil layers on phosphorus cycling microbial functional genes.

Indicator	Source of variation	Degree of freedom	F	P
P-starvation response regulation	Stand	2	9.856	0.001**
	Layer	2	9.299	0.002**
	Stand × Layer	4	0.965	0.451
P-uptake and transport	Stand	2	3.539	0.051
	Layer	2	0.407	0.671
	Stand × Layer	4	0.493	0.741
P-solubilization and mineralization	Stand	2	10.406	0.001**
	Layer	2	6.324	0.008**
	Stand × Layer	4	1.146	0.367
gcd	Stand	2	11.649	0.001**
	Layer	2	13.268	0.000***
	Stand × Layer	4	1.666	0.201
ugpQ	Stand	2	3.202	0.065
	Layer	2	12.367	0.000***
	Stand × Layer	4	0.984	0.441
phnW	Stand	2	4.945	0.019*
	Layer	2	7.032	0.006**
	Stand × Layer	4	0.668	0.623
phnX	Stand	2	6.891	0.006**
	Layer	2	0.662	0.528
	Stand × Layer	4	1.334	0.296
phoD	Stand	2	1.708	0.209
	Layer	2	12.021	0.000***
	Stand × Layer	4	2.826	0.056
phoR	Stand	2	11.008	0.001**
	Layer	2	6.807	0.006**
	Stand × Layer	4	0.436	0.781

*p < 0.05; **p < 0.01; and ***p < 0.001.