| Parameters |
Mine spoil collected from different age series coal mine overburdens |
Native Forest soil (NF) |
| OB0 |
OB2 |
OB4 |
OB6 |
OB8 |
OB10 |
| Sand (%) |
86.8 ± 2.1 |
84.6 ± 1.5 |
81.4 ± 1.6 |
79.5 ± 1.1 |
77.8 ± 1.2 |
75.9 ± 1.8 |
74.1 ± 1.2 |
| Silt (%) |
7.8 ± 0.6 |
8.5 ± 0.6 |
9.9 ± 0.3 |
10.6 ± 0.8 |
11.5 ± 0.5 |
12.8 ± 1.2 |
13.8 ± 0.6 |
| Clay (%) |
5.4 ± 1.2 |
6.9 ± 0.7 |
8.7 ± 0.9 |
9.9 ± 0.6 |
10.7 ± 0.8 |
11.3 ± 1.3 |
12.1 ± 0.5 |
| Bulk Density
(g/cm3) |
1.752 ± 0.049 |
1.605 ± 0.021 |
1.364 ± 0.019 |
1.331 ± 0.028 |
1.294 ± 0.026 |
1.275 ± 0.014 |
1.252 ± 0.019 |
| WHC (%) |
27.5 ± 1.121 |
31.3 ± 1.005 |
36.1 ± 0.984 |
38.3 ± 0.833 |
41.2 ± 0.743 |
43.8 ± 1.413 |
46.348 ± 0.833 |
| Moisture (%) |
6.831 ± 0.103 |
7.138 ± 0.141 |
7.422 ± 0.097 |
7.541 ± 0.143 |
7.783 ± 0.121 |
7.955 ± 0.087 |
11.219 ± 0.132 |
| Soil pH |
6.11 ± 0.03 |
6.24 ± 0.04 |
6.38 ± 0.02 |
6.45 ± 0.05 |
6.62 ± 0.07 |
6.71 ± 0.06 |
6.87 ± 0.07 |
| Organic C
(mgC/g spoil) |
nd |
0.151± 0.024 |
0.779 ± 0.048 |
1.057 ± 0.127 |
1.533 ± 0.242 |
2.004 ± 0.249 |
3.625 ± 0.25 |
| Total N
(µgN/g spoil) |
nd |
8.514 ± 0.425 |
45.833 ± 2.248 |
72.896 ± 4.078 |
113.555± 3.901 |
169.830 ± 8.95 |
2510 ± 28.43 |
| Extractable P
(µgP/g spoil) |
nd |
nd |
4.254 ± 1.246 |
8.063 ± 1.636 |
11.061 ± 0.764 |
12.581 ± 1.411 |
275 ± 9.97 |
nd: Not detectable. Values are mean ± SD, calculated from seasonal (summer, rainy, winter) mean values. |
