Table 4.

Pearson correlation coefficients between metal concentrations in the aboveground and underground tissues and water factors.

Tissues	Season	Metals	Water factors
			DO	SAL	TDS	SPC	ORP	PH	T
Aboveground	Spring	Cu	NS	NS	NS	NS	NS	NS	NS
		Zn	NS	NS	0.701∗	0.699∗	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	NS	NS	NS	NS	NS	NS	NS
	Summer	Cu	NS	−0.750∗	−0.675∗	−0.672∗	NS	NS	NS
		Zn	NS	−0.767∗	−0.680∗	−0.679∗	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	NS	NS	NS	NS	NS	NS	NS
	Autumn	Cu	NS	−0.778∗	NS	NS	NS	NS	NS
		Zn	NS	−0.787∗	NS	NS	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	−0.831∗∗	NS	0.835∗∗	0.836∗∗	0.744∗	−0.720∗	NS
	Winter	Cu	NS	−0.751∗	NS	NS	NS	NS	NS
		Zn	NS	−0.442	NS	NS	NS	NS	NS
		Pb	NS	−0.684∗	NS	NS	NS	NS	NS
		Cr	NS	0.668∗	NS	NS	NS	NS	NS
Underground	Spring	Cu	NS	NS	NS	NS	NS	NS	NS
		Zn	NS	NS	NS	NS	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	NS	NS	NS	NS	NS	NS	NS
	Summer	Cu	NS	NS	NS	NS	NS	NS	NS
		Zn	NS	NS	NS	NS	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	NS	NS	NS	NS	NS	NS	NS
	Autumn	Cu	NS	NS	NS	NS	NS	NS	NS
		Zn	NS	NS	NS	NS	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	0.534∗	NS	NS	NS	NS	NS	NS
	Winter	Cu	NS	NS	NS	NS	NS	NS	NS
		Zn	NS	NS	NS	NS	NS	NS	NS
		Pb	NS	NS	NS	NS	NS	NS	NS
		Cr	NS	NS	NS	NS	NS	NS	NS

NS: no significant correlation. ^∗Correlation is significant at the 0.05 level. ^∗∗Correlation is significant at the 0.01 level.