Table 5.

Factor analysis (Varimax rotation) of the centered log ratio (Clr) transformed data set.

Variables	Factors
	F1	F2	F3	Communality
Al	0.89	0.27	0.15	0.908
As	− 0.81	0.37	− 0.24	0.860
Ca	− 0.52	0.40	0.33	0.611
Cd	− 0.70	− 0.41	− 0.13	0.844
Co	0.17	0.10	0.71	0.918
Cr	0.19	0.92	− 0.07	0.916
Cu	− 0.01	0.80	0.27	0.821
Fe	0.43	− 0.71	− 0.18	0.891
K	0.75	0.54	− 0.01	0.925
Mg	− 0.13	0.04	0.77	0.870
Mn	0.80	− 0.37	0.06	0.861
Ni	0.12	0.20	0.81	0.879
P	0.61	0.00	− 0.44	0.738
Si	0.14	− 0.55	0.38	0.902
Sr	0.12	0.78	0.38	0.880
Ti	0.68	− 0.31	− 0.19	0.930
V	− 0.06	0.84	0.15	0.945
Zn	− 0.57	− 0.51	− 0.52	0.933
Zr	− 0.70	− 0.08	− 0.33	0.726
Eigen value	5.84	5.15	2.37	–
% of total explained Variance	30.76	27.11	12.45	–
% of cumulative Variance	30.76	57.87	70.32	–