Table 5 Means and standard deviations (in brackets) and percentage of variables considered for the tree-quality assessment by species
Species | N plots | N trees | dbh | H1Abranch | H1Dbranch | Crown H | % SG | % Pruned |
|---|---|---|---|---|---|---|---|---|
P. sylvestris | 1624 | 7169 | 30.1 (9.9) | 6.7 (4.0) | 3.3 (2.6) | 7.6 (4.0) | 0.2 | 16.9 |
P. nigra | 535 | 2224 | 26.1 (7.3) | 5.4 (2.8) | 2.6 (1.5) | 6.0 (2.9) | 0 | 32.0 |
P. pinaster | 2021 | 8058 | 33.7 (10.1) | 6.7 (3.2) | 3.9 (2.3) | 7.2 (3.3) | 0 | 18.5 |
P. radiata | 64 | 279 | 33.8 (12.8) | 6.5 (3.6) | 2.3 (2.1) | 8.3 (4.1) | 0 | 30.1 |
Q. robur | 20 | 63 | 37.4 (17.8) | 4.3 (1.9) | 4.3 (2.2) | 6.2 (2.2) | 0 | 0 |
Q. petraea | 147 | 569 | 32.6 (14.5) | 4.9 (2.8) | 4.2 (2.3) | 6.9 (2.8) | 0.4 | 0.4 |
F. sylvatica | 298 | 1210 | 30.8 (13.0) | 4.1 (2.7) | 4.4 (2.6) | 6.0 (3.0) | 0 | 0.1 |
C. sativa | 74 | 227 | 30.4 (14.4) | 4.4 (3.2) | 3.2 (1.8) | 7.1 (3.1) | 0.4 | 7.0 |