Table 3.
The basic wood density (g cm−3) of the main species of the watershed
| Trees species | The present study | Previous studies ρ (g cm−3) |
|||||
|---|---|---|---|---|---|---|---|
| n | Basic wood density | Mean (SE) | DBH (cm) | ||||
| Min. | Max. | Min. | Max. | ||||
| T. macroptera | 19 | 0.740 | 0.893 | 0.821 (0.010) | 9.3 | 40.7 | 0.768a; 0.870b |
| A. seyal | 16 | 0.669 | 0.909 | 0.751 (0.015) | 7.6 | 34.4 | – |
| C. glutinosum | 11 | 0.827 | 0.962 | 0.877 (0.013) | 7.9 | 31.9 | 0.900b |
| P. erinaceus | 21 | 0.671 | 0.973 | 0.826 (0.015) | 6.9 | 44.7 | 0.740a |
| A. leiocarpus | 16 | 0.813 | 0.977 | 0.889 (0.012) | 6.9 | 32.4 | – |
| M. inermis | 18 | 0.579 | 0.687 | 0.631 (0.008) | 7.0 | 34.5 | – |
| L. microcrapa | 22 | 0.472 | 0.648 | 0.546 (0.011) | 7.0 | 50.6 | – |
| L. acida | 06 | 0.504 | 0.676 | 0.573 (0.027) | 10.8 | 35.9 | – |
| Ficus sp. | 21 | 0.440 | 0.607 | 0.528 (0.010) | 8.6 | 52.7 | – |
| C. febrifuga | 18 | 0.518 | 0.778 | 0.704 (0.016) | 5.6 | 30.5 | – |
| E. africana | 15 | 0.556 | 0.688 | 0.631 (0.010) | 8.4 | 27.6 | – |
| P. biglobosa | 23 | 0.566 | 0.689 | 0.630 (0.006) | 8.6 | 62.4 | 0.525c |
| V. paradoxa | 23 | 0.608 | 0.950 | 0.838 (0.016) | 8.0 | 53.8 | – |
| A. indica | 16 | 0.619 | 0.886 | 0.763 (0.018) | 8.8 | 50.5 | 0.660d; 0.620e |
| A. occidentale | 25 | 0.512 | 0.625 | 0.569 (0.006) | 9.2 | 57.9 | 0.431c; 0.500e |
n = Number of tree selected. The stem wood samples of selected trees were extracted at 1.3 m of the ground. DBH range = range of diameter at breast height of sampled tree species. Figures in bracket represent the standard error (SE) of the mean
Authors of previous studies: a Sallenave [57, 58], b Von Maydell [59], c Carsan et al. [60], d Oey et al. [61], e Little et al. [62]