Table 1.

Descriptive statistics for REEs, contents (in μg/g) and pH in topsoils.

Element	N	Min	Max	Mean	SD	V	A	E	MDA	GM	Md	K–S	CV
La	70	14.49	181.10	66.11	37.17	1381.42	1.28	1.37	29.02	57.40	53.45	0.001	56.22
Ce	70	18.10	235.70	87.98	42.68	1821.90	1.34	2.58	30.17	79.33	86.05	0.000	48.52
Pr	70	3.50	39.00	12.86	6.84	46.83	1.57	3.35	5.05	11.80	11.85	0.000	53.23
Nd	70	9.30	106.80	39.01	19.37	375.21	1.24	2.36	14.52	34.14	36.15	0.049	49.65
Sm	70	1.70	22.60	7.76	3.97	15.76	1.43	3.48	2.82	6.98	7.50	0.002	51.16
Eu	70	0.50	6.00	1.78	1.11	1.24	1.69	3.57	0.80	1.54	1.50	0.000	62.51
Gd	70	1.00	15.80	6.11	3.05	9.29	1.13	1.44	2.25	5.28	5.65	0.015	49.9
Tb	70	0.20	2.60	0.98	0.49	0.24	0.93	1.31	0.54	0.87	1.00	0.031	50.19
Dy	70	1.40	15.50	5.74	2.91	8.48	1.16	1.98	2.21	5.05	5.35	0.200*	50.76
Ho	70	0.30	2.80	0.96	0.53	0.28	1.07	1.35	0.41	0.83	0.90	0.003	54.82
Er	70	0.70	7.00	2.77	1.37	1.87	0.88	0.83	1.09	2.44	2.55	0.200*	49.41
Tm	70	0.10	1.50	0.46	0.23	0.05	1.54	4.82	0.17	0.40	0.40	0.001	50.73
Yb	70	0.50	7.30	2.86	1.27	1.60	0.85	1.27	0.98	2.58	2.70	0.015	44.24
Lu	70	0.10	0.90	0.35	0.16	0.03	0.94	1.32	0.69	0.32	0.30	0.000	44.48
Y	70	5.50	58.80	21.67	11.13	123.93	0.99	1.16	8.71	18.97	19.25	0.089	51.38
ΣREEs	70	52.59	579.20	235.76	111.10	12344.18	1.11	1.24	83.70	198.53	216.25	0.005	47.13
ΣLREEs	70	48.29	530.40	215.50	103.93	10800.66	1.14	1.22	78.09	194.55	203.00	0.004	48.23
ΣHREEs	70	4.30	53.20	20.23	9.53	90.80	1.07	1.80	7.33	18.12	18.10	0.088	47.1
pH	70	3.69	7.38	4.86	0.66	0.43	0.75	1.71		4.87	4.86	.200*	13.54

N - number of samples; Min – minimum; Max – maximum; SD – standard deviation; V – variance; A – skewness; E − Kurtosis; MAD – median absolute deviation; GM – geometric mean; Md – median; K–S - Kolmogorov - Smirnov normality test; CV – coefficient of variation.