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Table I
(a) Structural attributes of the two study plots and (b) the tree sampling according to the three basal area groups (trees with DBH < 7.5 cm excluded).
| (a) | Density | Basal | Mean | Cohort 1959 | Volume |
|---|---|---|---|---|---|
| area | height | stature | |||
| (stem ha−1) | (m2ha−1) | (m) | (m) | (m3ha−1) | |
| Upper plot | 794 | 29 | 14.7 | 18.4 | 230 |
| Lower plot | 891 | 30 | 14.5 | 18.2 | 231 |
| Stature = mean height of the 4 tallest trees. | |||||
| (b) | Basal area group sampling | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Group | % of total | % of group | Mean * | Mean † | Mean † | Cohorts present | ||||
| stems | stems sampled | diameter (cm) | Height (m) | Volume (m3) | (n stems) | |||||
| 1945 | 1959 | 1972 | ||||||||
| Upper plot | UP1 | 50 | 33 | 17.3 (10–21) | 13.9 ± 1.4 | 0.17 ± 0.06 | – | 3 | 7 | |
| (UP) | UP2 | 27 | 63 | 24.4 (22–26) | 16.4 ± 0.3 | 0.38 ± 0.04 | 1 | 6 | 3 | |
| UP3 | 17 | 100 | 31.0 (26–39) | 18.0 ± 0.9 | 0.69 ± 0.23 | – | 8 | 2 | ||
| Lower plot | LP1 | 41 | 40 | 18.5 (15–20) | 14.5 ± 0.6 | 0.19 ± 0.04 | – | 10 | – | |
| (LP) | LP2 | 30 | 56 | 22.5 (21–24) | 15.9 ± 0.3 | 0.31 ± 0.04 | – | 10 | – | |
| LP3 | 20 | 83 | 28.6 (25–32) | 17.2 ± 0.5 | 0.51 ± 0.09 | 3 | 7 | – | ||