Table 2.

Correlations between the measured environmental variables and relative abundances of rhizosphere prokaryotic phyla.

Classification		TN	TK	TP	AN	AK	AP	M	T	P
Euryarchaeota	r	− 0.041	− 0.271	− 0.137	− 0.115	− 0.103	− 0.243	− 0.317	− 0.624**	− 0.055
Thaumarchaeota	r	− 0.274	0.177	− 0.091	0.134	0.360*	0.268	0.070	0.326	− 0.340*
Acidobacteria	r	0.077	− 0.084	− 0.126	0.018	0.033	− 0.212	− 0.545**	− 0.347*	− 0.084
Actinobacteria	r	− 0.327	0.196	0.176	0.001	0.280	0.486**	0.544**	0.732**	0.019
Armatimonadetes	r	− 0.035	− 0.365*	− 0.195	− 0.084	0.169	0.044	− 0.518**	− 0.368*	− 0.244
BRC1	r	0.042	− 0.028	− 0.094	− 0.005	− 0.227	− 0.146	0.450**	0.125	0.146
Bacteroidetes	r	− 0.112	0.133	− 0.171	− 0.109	− 0.127	− 0.159	0.003	− 0.242	− 0.127
Chlorobi	r	0.025	− 0.168	− 0.071	0.118	− 0.119	0.012	− 0.044	− 0.005	− 0.349*
Chloroflexi	r	− 0.227	0.288	0.157	0.160	0.344*	0.550**	0.478**	0.770**	− 0.022
Cyanobacteria	r	0.064	− 0.140	0.037	0.079	− 0.152	0.149	0.236	0.093	0.196
Deinococcus-Thermus	r	0.008	− 0.070	− 0.078	− 0.091	− 0.318	− 0.144	0.166	0.012	0.147
Elusimicrobia	r	0.108	− 0.123	0.105	− 0.052	0.089	0.147	− 0.217	− 0.108	0.058
FBP	r	− 0.090	0.372*	0.065	− 0.048	0.084	− 0.112	0.197	0.065	0.098
Fibrobacteres	r	0.230	0.025	0.215	0.300	− 0.108	− 0.064	− 0.125	− 0.402*	− 0.285
Firmicutes	r	0.116	0.138	0.509**	0.283	0.179	0.442**	0.153	0.146	− 0.172
GAL15	r	0.192	0.239	0.144	0.191	0.064	− 0.101	− 0.121	− 0.107	− 0.011
Gemmatimonadetes	r	0.046	− 0.169	− 0.053	− 0.265	− 0.319	− 0.140	0.126	− 0.091	0.373*
Latescibacteria	r	0.388*	− 0.242	0.172	0.213	0.102	0.051	− 0.528**	− 0.371*	− 0.239
Nitrospirae	r	0.303	− 0.013	0.215	0.252	0.259	0.069	− 0.309	− 0.232	− 0.062
Omnitrophica	r	0.448**	0.049	0.402*	0.376*	0.129	0.127	− 0.174	− 0.089	− 0.194
Parcubacteria	r	0.396*	− 0.289	− 0.148	− 0.005	− 0.267	− 0.428**	− 0.491**	− 0.646**	0.191
Planctomycetes	r	0.327	0.115	0.429**	0.271	0.282	0.216	0.371*	0.143	0.096
Proteobacteria	r	− 0.175	− 0.299	− 0.490**	− 0.380*	− 0.468**	− 0.492**	− 0.395*	− 0.464**	0.055
Saccharibacteria	r	− 0.149	0.090	− 0.090	− 0.195	− 0.216	− 0.216	0.412*	− 0.031	0.373*
Tectomicrobia	r	0.076	0.317	0.366*	0.389*	0.153	0.283	0.247	0.323	− 0.096
Verrucomicrobia	r	0.190	− 0.179	− 0.099	0.041	− 0.112	− 0.252	− 0.462**	− 0.672**	− 0.306
WS2	r	0.357*	0.083	− 0.017	0.307	− 0.027	− 0.138	− 0.288	− 0.246	− 0.213
WWE3	r	− 0.499**	− 0.120	− 0.500**	− 0.589**	− 0.215	− 0.331*	0.058	− 0.032	0.359*

The Spearman’s rank correlation coefficient (r) are shown. Correlations where p < 0.05 were considered to be significant.

TN total nitrogen, TK total potassium, TP total phosphorus, AN available nitrogen, AK available potassium, AP available phosphorus, M moisture, T temperature, P accumulated precipitation 30 days before sampling time.

*p < 0.05 and **p < 0.01.