Table 1.
Soil parameters of the AS and the CS. CEC: cation exchange capacity; soil C:N: molar based soil C:N ratio; DOC: dissolved organic carbon; TDN: total dissolved nitrogen; Cmic: microbial biomass C; Nmic: microbial biomass N; and microbial C:N: molar based microbial C:N ratio. Samples collected in spring 2022 (n = 4, SE: standard error).
| AS | CS | P | |||
|---|---|---|---|---|---|
| Mean | SE | Mean | SE | ||
| pH | 8.50 | ± 0.02 | 6.12 | ± 0.09 | 0.028 |
| % CaCO3 | 12.0 | ± 0.56 | 0 | ± 0.0 | 0.021 |
| Iron (mg kg−1) | 65.5 | ± 2.75 | 480.5 | ± 17.69 | 0.028 |
| Manganese (mg kg−1) | 149.8 | ± 22.75 | 375.5 | ± 7.50 | < 0.001 |
| Copper (mg kg−1) | 6.0 | ± 0.31 | 4.7 | ± 0.04 | 0.026 |
| Zinc (mg kg−1) | 2.6 | ± 0.25 | 2.4 | ± 0.09 | 0.534 |
| CEC (cmolc kg−1) | 27 | ± 0.41 | 8.8 | ± 0.36 | 0.028 |
| Total C (mg g−1 dw soil) | 23.23 | ± 1.07 | 8.40 | ± 0.14 | 0.028 |
| Total N (mg g−1 dw soil) | 2.35 | ± 0.03 | 1.08 | ± 0.01 | 0.028 |
| Soil C:N | 11.54 | ± 0.44 | 9.06 | ± 0.09 | 0.009 |
| DOC (µg C g−1 dw soil) | 68.88 | ± 2.41 | 10.21 | ± 2.29 | 0.001 |
| TDN (µg N g−1 dw soil) | 20.26 | ± 0.80 | 14.96 | ± 3.03 | 0.142 |
| Cmic (µg C g−1 dw soil) | 179.33 | ± 9.35 | 133.91 | ± 4.70 | 0.005 |
| Nmic (µg N g−1 dw soil) | 41.83 | ± 3.58 | 17.09 | ± 2.40 | 0.003 |
| Microbial C:N | 5.13 | ± 0.54 | 9.53 | ± 1.65 | 0.034 |
| NH4+ (µg N g−1 dw soil) | 3.26 | ± 0.87 | 10.12 | ± 2.32 | 0.032 |
| NO3− (µg N g−1 dw soil) | 8.49 | ± 0.24 | 3.65 | ± 0.35 | < 0.001 |