Table 2.

Descriptive statistics of element concentrations (μg g⁻¹) in moss, tree leaves and soil.

Sample	Value (μg g−1)	Ag	As	Cd	Co	Cr	Cu	Mn	Mo	Ni	Pb	V	Zn
H. angustifolium	Minimum	0.074	3.04	0.433	1.85	6.37	19.9	127	277	2.99	17.3	15.3	86.4
	Maximum	0.258	6.69	1.20	5.22	27.0	44.9	700	491	6.17	61.3	32.2	169
	Mean	0.127	4.20	0.660	4.14	13.3	25.6	300	338	4.97	28.0	24.8	114
	SD	0.073	1.33	0.27	1.17	6.67	8.94	189	79.2	1.05	16.6	6.39	31.1
	Diff	a	a	a	a	a	a	a	a	a	a	a	a
C. bodinieri	Minimum	0.004	0.156	0.025	0.047	0.277	3.54	39.3	17.7	0.326	1.179	0.306	8.47
	Maximum	0.021	0.871	0.092	0.345	1.29	7.41	393	75.7	0.864	3.738	2.553	16.9
	Mean	0.008	0.317	0.050	0.108	0.579	5.23	120	41.1	0.549	2.361	0.735	13.4
	SD	0.006	0.222	0.023	0.091	0.339	1.35	122	17.9	0.185	0.940	0.695	3.32
	Diff	b	b	b	b	b	b	b	b	b	b	b	b
O. fragrans	Minimum	0.002	0.111	0.090	0.120	0.357	3.96	13.5	42.9	0.316	1.52	0.369	17.5
	Maximum	0.018	0.318	0.358	0.330	0.759	7.17	223	251	0.976	10.6	0.830	40.9
	Mean	0.009	0.196	0.182	0.224	0.538	5.14	107	144	0.562	3.59	0.575	27.1
	SD	0.005	0.079	0.101	0.057	0.130	1.04	75.0	71.4	0.202	3.09	0.137	7.57
	Diff	b	b	c	b	b	b	b	c	b	b	b	b
Soil	Minimum	0.064	21.5	0.113	12.5	42.4	25.1	386	329	16.4	28.0	102	55.9
	Maximum	0.217	23.8	0.301	19.0	54.7	32.0	1035	549	21.2	41.4	138	81.6
	Mean	0.107	22.7	0.185	16.4	49.3	28.0	667	387	18.4	32.7	124	67.8
	SD	0.047	0.876	0.056	2.14	3.56	2.54	190	74	1.43	4.51	10.9	9.69
	Diff	a	c	c	c	c	a	c	a	c	a	c	c

Note: SD: standard deviation; Different letters of a, b and c in Diff in the same column indicate significant differences at p < 0.05 among materials.