Table 4.

The mean ± standard deviation of soil variable and diversity indices. Significant values in bold.

Variable	VGI	VGII	VGIII	VGIV	Total mean	F-value
Diversity indices
Species richness	12.75 ± 9.8	13.70 ± 44.8	14.40 ± 43.2	13.66 ± 21.1	13.68	0.07
Species cover	54.27 ± 76.5	43.72 ± 81.3	110.1 ± 58.2	97.70 ± 6.0	68.08	3.29⁎
Conc. of dominance (C)	0.35 ± 78.6	0.13 ± 65.1	0.25 ± 30.9	0.48 ± 64.2	0.24	4.15⁎
Relative evenness (Ĥ)	0.69 ± 36.	0.92 ± 17.9	0.75 ± 12.7	0.76 ± 20.9	0.82	2.24
Soil
pH	7.9 ± 0.0	8.12 ± 1.8	8.06 ± 5.3	7.93 ± 6.9	8.04	0.70
EC (mS/cm)	0.44 ± 65.0	0.52 ± 66.6	0.34 ± 65.0	0.43 ± 62.7	0.46	0.39
Bulk soil (%)
O.M.	1.66 ± 16.6	1.57 ± 23.9	0.76 ± 58.6	0.32 ± 53.7	1.23	13.9⁎⁎⁎
Sand	60.3 ± 1.64	65.2 ± 7.7	83.00 ± 11.8	86.69 ± 1.2	71.30	21.7⁎⁎⁎
Clay	12.16 ± 18.9	13.66 ± 45.8	10.56 ± 25.5	9.49 ± 6.0	12.11	0.85
Silt	27.54 ± 4.9	21.12 ± 40.9	6.43 ± 3.3	3.81 ± 39.3	16.59	11.3⁎⁎⁎
Mineral soil (ppm)
Ca	57.93 ± 23.8	31.73 ± 51.6	20.87 ± 84.4	8.26 ± 13.9	30.83	6.62⁎⁎⁎
Fe	2.24 ± 1.4	1.40 ± 31.6	1.53 ± 31.1	1.05 ± ± 22.1	1.53	6.2⁎⁎⁎
K	0.36 ± 11.9	0.41 ± 1.2	0.14 ± 35.6	0.11 ± 15.7	0.30	0.93
Mg	1.46 ± 2.7	0.54 ± 56.4	0.45 ± 26.4	0.21 ± 90.8	0.64	21.5⁎⁎⁎
Na	0.01 ± 7.9	0.01 ± 23.2	0.009 ± 15.1	0.01 ± 34.3	0.0098	3.91⁎
P	3.52 ± 4.1	0.64 ± 16.5	0.51 ± 29.1	0.48 ± 36.9	1.11	16.36⁎⁎⁎
N	0.01 ± 7.0	0.01 ± 3.2	0.008 ± 15.1	0.01±34.3	0.008	3.91⁎

^⁎p ⩽ 0.05.

^⁎⁎⁎p ⩽ 0.001.