Table 2 Properties of grassland soil samples collected from covering and surrounding the opencast coal mine
Sample namea | NH4+–N (mg/g) | NO3−–N (mg/g) | Moisture content (%) | TOC (g/kg) | pH |
|---|---|---|---|---|---|
CS1 | 0.029586 | 0.021268 | 4.83 | 8.25 | 7.9 |
CS2 | 0.024797 | 0.020909 | 4.45 | 8.28 | 7.9 |
CS3 | 0.023653 | 0.025826 | 4.65 | 9.33 | 8.1 |
SS1 | 0.022169 | 0.019433 | 4.57 | 7.67 | 7.8 |
SS2 | 0.021367 | 0.018375 | 4.73 | 7.82 | 7.9 |
SS3 | 0.021092 | 0.020548 | 4.69 | 7.37 | 7.8 |