Table 2.

The result of Spearman correlation coefficient test between alpha diversity indices, relative abundance of trophic modes and soil properties in (A) Carpinus cordata and (B) Fraxinus rhynchophylla forests.

A
		pH	TOC	TN	NH4	TP	Water	TK	C/N
Alpha diversity	Number of OTU	−0.147	−0.538	−0.28	0.371	0.035	0.648*	0.72*	−0.245
	Chao1	−0.111	−0.594*	−0.266	0.273	0.203	0.634*	0.832*	−0.364
	Diversity	−0.011	0.007	0.007	0.021	0.070	0.224	0.49*	−0.014
	Equitability	−0.011	0.077	0.063	−0.084	0.126	0.091	0.420	−0.084
Trophic Mode (relative abundance)	Sym	0.132	0.462	−0.161	−0.063	−0.238	−0.119	0.042	0.727*
	Sap	0.200	−0.364	0.224	−0.063	0.329	0.067	0.336	−0.664
	Sap-Sym	−0.429	−0.21	−0.294	0.021	−0.105	0.305	0.014	0.189
	Pat	0.347	−0.056	0.490	−0.154	0.497	−0.207	0.000	−0.643
	Pat-Sym	−0.261	−0.811	−0.629	0.490	−0.231	0.364	0.371	−0.196
	Pat-Sap	−0.197	−0.182	−0.028	−0.308	0.070	−0.165	0.273	−0.357
	Pat-Sap-Sym	0.143	−0.483	−0.014	0.399	0.371	0.298	−0.035	−0.545*
B
		pH	TOC	TN	NH4	TP	Water	TK	C/N
Alpha diversity	Number of OTU	0.300	−0.34	−0.399*	0.308	−0.455	0.263	0.629*	−0.049
	Chao1	0.536	−0.62*	−0.608*	0.606	−0.231	0.585	0.692*	−0.245
	Diversity	0.427	−0.273	−0.175	0.256	−0.294	0.175	0.706*	−0.07
	Equitability	0.406	−0.287	−0.182	0.266	−0.287	0.182	0.741*	−0.084
Trophic Mode (relative abundance)	Sym	−0.423	0.025	−0.161	−0.179	−0.427	−0.2	−0.112	0.308
	Sap	0.250	−0.298	−0.182	0.186	−0.147	0.256	0.252	−0.224
	Sap-Sym	−0.215	0.417*	0.608*	−0.399	0.399	−0.469	−0.238	−0.175
	Pat	0.134	−0.179	0.077	0.025	0.049	0.053	0.028	−0.35
	Pat-Sym	0.490	−0.413*	−0.378	0.578	0.392	0.599	0.497*	−0.455
	Pat-Sap	−0.279	0.483	0.406	−0.41	−0.147	−0.431	−0.559	0.413
	Pat-Sap-Sym	0.511*	−0.375	0.014	0.525*	0.657	0.494*	0.280	−0.72*

^*Indicate significant correlation (p < 0.05).

TOC, total organic carbon; TN, total nitrogen; NH₄⁺, Ammonium ion; TP, total phosphorus; TK, total potassium; C/N, carbon to nitrogen ratio (TOC/TN); Sap, saprotroph; Sym, symbiotroph; Pat, pathotroph.