Table 1.
Table summarizing the main features of the study plots: BA (Basal area), Number of trees per hectare, Altitude, Slope, pH, CN ratio and P (Phosphorus). Ps: P. sylvestris, Pn: P. nigra, Ph: P. halepensis, Ps-Pn: P. sylvestris-nigra, Pn-Ph: P. nigra-halepensis.
| Forest Type | Range | BA, m2 ha−1 | N. of Tree Per Hectare | Altitude, m a.s.l | Slope, % | pH | CN Ratio |
P |
|---|---|---|---|---|---|---|---|---|
| Ps | Min. | 18.0 | 681 | 854 | 4 | 4.8 | 6.9 | 2 |
| (14) | Mean | 29.8 | 1362 | 1197 | 22 | 7.2 | 12.4 | 5.8 |
| Max. | 41.5 | 1517 | 1615 | 37 | 8.3 | 19.5 | 9 | |
| Pn | Min. | 16.1 | 638 | 397 | 5 | 8.0 | 4.0 | 3 |
| (14) | Mean | 27.7 | 1692 | 763 | 16 | 8.2 | 14.4 | 5.0 |
| Max. | 39.1 | 2838 | 1040 | 32 | 8.4 | 21.3 | 9 | |
| Ph | Min. | 24.0 | 1006 | 520 | 10 | 8.2 | 12.5 | 3 |
| (4) | Mean | 28.8 | 2093 | 612 | 16 | 8.3 | 13.6 | 4.8 |
| Max. | 33.6 | 3088 | 661 | 34 | 8.4 | 14.8 | 6 | |
| Ps–Pn | Min. | 11.5 | 477 | 1030 | 8 | 6.6 | 12.1 | 2 |
| (7) | Mean | 23.5 | 1161 | 1085 | 24 | 7.7 | 14.5 | 3.3 |
| Max. | 31.8 | 2870 | 1148 | 31 | 8.3 | 19.8 | 5 | |
| Pn–Ph | Min. | 17.6 | 1229 | 390 | 9 | 8.2 | 11.1 | 2 |
| (3) | Mean | 19.7 | 1806 | 469 | 12 | 8.3 | 13.2 | 4.0 |
| Max. | 20.9 | 2761 | 577 | 13 | 8.4 | 15.4 | 5 |