Table 1.
Physical and chemical properties in soil
| Depth (cm) | Horizon | Clay (%) | pH | TOC (g kg−1) | TN (g kg−1) | TOC/TN | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| H2O | KCl | Spring | Autumn | Spring | Autumn | Spring | Autumn | |||
| Control | ||||||||||
| 0–20 | A | 9 | 5.71 | 5.11 | 12.09 | 22.36 | 0.871 | 1.431 | 13.9 | 15.6 |
| 20–50 | ABv | 5 | 5.71 | 5.13 | 4.16 | 5.616 | 0.312 | 0.390 | 13.4 | 14.4 |
| 50–100 | BvC | 5 | 5.09 | 4.25 | 0.754 | 0.702 | 0.071 | 0.052 | 10.8 | 14.0 |
| 100–130 | C | 1 | 5.10 | 4.31 | 0.624 | 0.507 | 0.065 | 0.042 | 10.4 | 12.7 |
| Profile I | ||||||||||
| 0–15 | A | 1 | 5.34 | 4.46 | 11.44 | 10.61 | 0.981 | 0.821 | 11.7 | 12.9 |
| 15–72 | Bv | 1 | 5.59 | 4.99 | 1.040 | 1.989 | 0.913 | 0.203 | 1.10 | 9.90 |
| 72–100 | C | 1 | 5.61 | 4.09 | 0.416 | 0.440 | 0.042 | 0.065 | 10.4 | 7.40 |
| Profile II | ||||||||||
| 0–15 | A | 3 | 5.43 | 4.72 | 8.879 | 19.66 | 0.922 | 1.511 | 9.7 | 13.0 |
| 15–39 | ABv | 1 | 5.66 | 4.98 | 4.888 | 5.252 | 0.530 | 0.515 | 9.2 | 10.3 |
| 39–87 | C1 | 4 | 5.73 | 4.98 | 0.507 | 0.455 | 0.064 | 0.052 | 8.5 | 9.10 |
| 87–100 | C2 | 3 | 5.85 | 4.97 | 0.195 | 0.338 | 0.021 | 0.044 | 9.8 | 8.50 |
| Profile III | ||||||||||
| 0–4 | A | 7 | 5.35 | 4.39 | 5.850 | 24.99 | 0.390 | 1.510 | 15.0 | 16.6 |
| 4–18 | ABv | 1 | 5.60 | 4.93 | 1.976 | 7.878 | 0.144 | 0.670 | 14.1 | 11.8 |
| 18–60 | Bv | 2 | 6.04 | 5.17 | 1.963 | 2.756 | 0.153 | 0.234 | 13.1 | 12.0 |
| 60–150 | C | 1 | 6.61 | 5.41 | 0.650 | 0.468 | 0.061 | 0.051 | 10.8 | 9.40 |
TOC total organic carbon, TN total nitrogen