Table 3 Descriptive statistics (minimum (min), maximum (max), and mean ± standard error (mean ± SE)) of stand characteristics (N: density (trees ha−1), G: basal area (m2 ha−1), Ho: dominant height (m), dq: quadratic mean diameter (cm), and age: normal age (years)) of three types of stands
Scots pine monospecific stands | Mixed stands | Maritime pine monospecific stands | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Min | Max | Mean ± SE | Min | Max | Mean ± SE | Min | Max | Mean ± SE | ||
N (trees ha−1) | Total | 509.3 | 821.0 | 684.0 ± 48.9 | 523.0 | 1330.0 | 745.0 ± 120.9 | 538.0 | 1429.0 | 775.9 ± 137.1 |
Scots | 495.1 | 806.0 | 660.2 ± 48.0 | 241.0 | 764.0 | 429.2 ± 75.1 | 0.0 | 283.0 | 59.0 ± | |
Maritime | 0.0 | 56.6 | 23.5 ± 8.7 | 198.0 | 566.0 | 316.0 ± 56.3 | 509.0 | 1146.0 | 716.9 ± 96.6 | |
G (m2 ha−1) | Total | 33.3 | 54.9 | 48.1 ± 3.2 | 33.3 | 68.2 | 55.3 ± 4.9 | 37.5 | 70.3 | 62.2 ± 5.2 |
Scots | 30.8 | 54.9 | 44.9 ± 3.4 | 13.0 | 45.9 | 25.7 ± 4.8 | 0.0 | 3.3 | 0.8 ± 0.5 | |
Maritime | 0.0 | 8.2 | 3.2 ± 1.1 | 20.2 | 38.9 | 29.5 ± 2.9 | 37.5 | 70.3 | 61.4 ± 5.1 | |
dq (cm) | Total | 22.5 | 34.4 | 29.2 ± 1.7 | 20.2 | 39.4 | 30.0 ± 2.8 | 22.6 | 39.6 | 32.3 ± 2.5 |
Scots | 22.2 | 32.4 | 28.5 ± 1.6 | 16.6 | 40.3 | 27.2 ± 3.5 | 0.0 | 15.8 | 5.8 ± 2.8 | |
Maritime | 0.0 | 56.7 | 36.6 ± 8.2 | 25.0 | 43.5 | 35.4 ± 2.8 | 26.0 | 39.6 | 33.3 ± 2.2 | |
Ho (m) | Total | 16.8 | 22.1 | 19.3 ± 0.9 | 13.1 | 24.6 | 18.0 ± 1.7 | 12.4 | 20.5 | 16.9 ± 1.2 |
Scots | 16.6 | 22.1 | 19.2 ± 0.9 | 12.3 | 24.3 | 17.1 ± 1.8 | 0.0 | 10.8 | 4.2 ± 1.9 | |
Maritime | 0.0 | 24.5 | 17.1 ± 3.6 | 14.2 | 25.0 | 19.2 ± 1.7 | 13.6 | 20.5 | 17.3 ± 1.0 | |
Age (years) | Scots | 44 | 151 | 99.8 ± 14.9 | 44 | 118 | 94.3 ± 11.7 | 0 | 0 | 0 ± 0 |
Maritime | 0 | 0 | 0 ± 0 | 49 | 118 | 91.2 ± 10.2 | 49 | 118 | 90.8 ± 10.9 | |