Table 4.

Characteristics of bioaccumulaton (BAF) and translocation (TF) factors with characteristics of two correlations: amount of motor vehicles – concentration of REEs in soil and REEs concentration in soil to their content in plant, calculated based on all observations from all experimental areas (A1-A4)

Plant species	Factor/ correlation	HREEs				LREEs				REEs
		A1	A2	A3	A4	A1	A2	A3	A4	A1	A2	A3	A4
A. vulgaris	BCF	1.90	1.01	0.87	0.63	2.12	1.19	0.94	0.68	1.00	0.55	0.45	0.33
	TF	1.2	1.0	1.4	1.1	2.5	2.3	3.5	2.9	2.3	2.2	3.2	2.7
	Plant - soil	r = −0.245, p = 0.755				r = −0.408, p = 0.539				r = −0.415, p = 0.585
A. millefolium	BCF	2.39	1.40	0.98	1.02	2.66	1.66	1.05	1.11	1.26	0.76	0.51	0.53
	TF	1.6	1.8	0.5	0.8	4.1	4.5	1.0	1.3	3.7	4.1	1.0	1.2
	Plant - soil	r = 0.849, p = 0.151				r = −0.390, p = 0.610				r = −0.270, p = 0.730
T. inodorum	BCF	2.32	1.72	1.15	1.21	2.49	2.03	1.24	1.32	1.19	0.93	0.60	0.63
	TF	0.1	0.3	0.3	0.3	0.8	1.4	1.3	1.3	0.6	1.3	1.0	1.0
	Plant - soil	r = 0.275, p = 0.725				r = −0.612, p = 0.388				r = −0.525, p = 0.475
P. rhoeas	BCF	3.40	2.40	1.17	0.47	3.79	2.83	1.25	0.52	1.79	1.30	0.60	0.25
	TF	0.3	7.8	0.6	0.3	0.8	1.4	0.5	2.2	1.6	2.9	0.5	2.0
	Plant - soil	r = −0.889, p = 0.111				r = −0.056, p = 0.944				r = −0.348, p = 0.652
T. officinale	BCF	2.06	1.07	1.63	1.26	2.30	1.26	1.75	1.38	1.09	0.58	0.84	0.66
	TF	1.0	1.0	0.5	1.4	4.2	4.3	1.3	2.2	3.9	4.1	1.2	2.2
	Plant - soil	r = 0.898, p = 0.102				r = 0.753, p = 0.247				r = 0.774, p = 0.226
Motor vehicles amount - soil		r = 0.992, p = 0.008				r = 0.996, p = 0.004				r = 0.995, p = 0.005