Table 2.
Soil properties at different depths and different sample plots.
| Sample Plots | Depth (cm) | pH | SOM (g·kg−1) |
TN (g·kg−1) |
AN (mg·kg−1) |
AP (mg·kg−1) |
AK (mg·kg−1) |
|---|---|---|---|---|---|---|---|
| CA1 | 0–20 | 8.18 ± 0.11aA | 11.08 ± 5.55aA | 0.42 ± 0.01aC | 62.71 ± 5.22aA | 5.76 ± 0.23aB | 186.58 ± 1.65aB |
| CA2 | 20–40 | 8.22 ± 0.04aB | 9.23 ± 3.31aA | 0.22 ± 0.01bC | 17.10 ± 0.00cB | 0.34 ± 0.30bC | 50.61 ± 0.38cC |
| CA3 | 40–60 | 8.19 ± 0.02aC | 7.02 ± 1.47aA | 0.20 ± 0.00cC | 26.22 ± 3.95bB | 0.40 ± 0.20bB | 54.21 ± 0.77bC |
| NSA1 | 0–20 | 8.30 ± 0.04abA | 15.33 ± 2.42aA | 0.62 ± 0.01aB | 71.83 ± 12.33aA | 8.18 ± 0.30bA | 192.55 ± 1.30aA |
| NSA2 | 20–40 | 8.25 ± 0.02bB | 9.78 ± 3.37bA | 0.45 ± 0.01cA | 33.06 ± 3.95bA | 4.45 ± 0.12cA | 127.11 ± 0.98cA |
| NSA3 | 40–60 | 8.35 ± 0.07aB | 7.19 ± 0.84bA | 0.51 ± 0.01bA | 30.78 ± 0.00bB | 13.80 ± 0.12aA | 150.86 ± 0.21bA |
| OSA1 | 0–20 | 8.30 ± 0.05cA | 9.60 ± 3.13aA | 0.87 ± 0.01aA | 68.41 ± 3.42aA | 1.97 ± 0.20aC | 119.83 ± 1.03aC |
| OSA2 | 20–40 | 8.38 ± 0.02bA | 6.65 ± 1.76aA | 0.33 ± 0.01bB | 34.21 ± 3.43cA | 0.93 ± 0.30bB | 68.52 ± 0.08bB |
| OSA3 | 40–60 | 8.48 ± 0.01aA | 8.31 ± 2.22aA | 0.27 ± 0.00cB | 41.19 ± 3.95bA | 0.47 ± 0.30bB | 63.79 ± 0.44cB |
Note: lowercase letters represent the significance of differences between soil layers within a sample plot; where the letters are different, there is a significant difference (p < 0.05). Uppercase letters represent the significance of differences between sample plots for the same soil layer; where the letters are different, there is a significant difference (p < 0.05).