CEC	Correlation	pH	OM	Free Fe₂O₃	Sand	Silt	Clay
Soil CEC	Pearson Correlation	0.016	0.089	0.332**	−0.383**	0.184	0.310**
	Sig. (2-tailed)	0.884	0.417	0.002	0.000	0.091	0.004
Clay CEC_m	Pearson Correlation	−0.033	−0.007	−0.160	−0.231*	0.397**	−0.066
	Sig. (2-tailed)	0.765	0.952	0.144	0.033	0.000	0.546
Clay CEC_c	Pearson Correlation	−0.028	0.416**	0.007	0.223*	0.313**	−0.554**
	Sig. (2-tailed)	0.797	0.000	0.949	0.040	0.004	0.000
Δ clay CEC significant positive correlation with clay CEC_c (p < 0.05)	Pearson Correlation	0.005	0.399**	0.068	0.472**	0.034	−0.615**
	Sig. (2-tailed)	0.962	0.000	0.537	0.000	0.756	0.000
Silt CEC	Pearson Correlation	−0.165	0.173	0.251*	0.121	0.084	−0.226*
	Sig. (2-tailed)	0.131	0.114	0.020	0.269	0.442	0.038