Community Structure and Biodiversity of Soil Ciliates at Dongzhaigang Mangrove Forest in Hainan Island, China

Table 6

Correlation of ciliate abundance with soil physical/chemical properties in dried samples.

	Factors	Correlation	Formulas of stepwise regression	𝑅^2	𝑃 value
Physical factors	pH (pH)	−^a 2^b	Num=2825.583+94.947𝑊−779.06𝑝+19.107𝑆	0.966	.002
	Soil moisture (SM)	+1			.006
	Salinity (S)	+3			.048
Chemical factors	TP (TP)	+1	Num=−12599.7+25592.82𝑇𝑃	0.959	.001
	TN (TN)	+2	Num=−467.485+1063.69𝑇𝑁	0.937	.002
	SO4^2− (SO)	+3	Num=−279.373+770𝑆𝑂	0.893	.004
	OM (OM)	+4	Num=265.429+23.383𝑂𝑀	0.888	.005
	TK (TK)	−5	Num=24242.76−1841.423𝑇𝐾	0.710	.035

^a+ means positive correlation; − means negative correlation.
^bcorrelation degree (1 means the biggest effect on ciliates abundance, followed 2, 3, in sequence).