| P-chimiques | savane | foret | p ≥ F | E-T |
| pH | 5.8b | 5.1a | 0.0001 | 0.61 |
| CEC (cmol・kg−1) | 3.57a | 8.87b | 0.0001 | 4.89 |
| S (cmol・kg−1) | 1.22a | 1.62b | 0.004 | 0.56 |
| V (%) | 52.65b | 23.40a | 0.0001 | 28.14 |