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Table I
Characteristics of forest stands in the two sample plots.
| (a) Plot 1. | ||||||
| Species | Density (ha−1) | Basal area (m2ha−1) | Volume (m3ha−1) | % of overall density | % of overall basal area | % of overall volume |
|---|---|---|---|---|---|---|
| Quercus robur | 40 | 11.6 | 195.7 | 7.0 | 40.0 | 48.2 |
| Robinia pseudoacacia | 167 | 10.8 | 144.5 | 29.3 | 37.4 | 35.6 |
| Other broadleaves | 363 | 6.5 | 65.5 | 63.7 | 22.6 | 16.2 |
| Total | 571 | 28.9 | 405.7 | 100.0 | 100.0 | 100.0 |
| (b) Plot 2. | ||||||
| Species | Density (ha−1) | Basal area (m2ha−1) | Volume (m3ha−1) | % of overall density | % of overall basal area | % of overall volume |
|---|---|---|---|---|---|---|
| Quercus robur | 40 | 12.4 | 219.5 | 6.8 | 35.1 | 42.8 |
| Robinia pseudoacacia | 334 | 18.0 | 227.2 | 56.7 | 51.1 | 44.3 |
| Other broadleaves | 215 | 4.9 | 66.0 | 36.5 | 13.8 | 12.9 |
| Total | 589 | 35.3 | 512.7 | 100.0 | 100.0 | 100.0 |