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Table I
Number of study trees growing with different neighboring species at study sites. The average basal area (m2/ha) and site index of each stand is also given.
| Silver birch | Scots pine | Siberian larch | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Basal area | Site | with | with | with | |||||||
| Site | (m2/ha) | index* | Birch | Pine | Larch | Birch | Pine | Larch | Birch | Pine | Larch |
| AH | 10 | 24 | 3 | 3 | – | 3 | 3 | – | – | – | – |
| KO | 15 | 22 | 3 | 3 | – | 3 | 3 | – | – | – | – |
| JO | 19 | 30 | 3 | 3 | – | 3 | 3 | – | – | – | – |
| KJ | 25 | 26 | 3 | 2 | – | 2 | 2 | – | – | – | – |
| PM | 12 | 22 | 3 | 3 | – | 3 | 3 | – | – | – | – |
| PO | 1.2 | 26 | 4 | 3 | 3 | 4 | 6 | 3 | 4 | 2 | 3 |
| PR | 0.5 | 24 | 6 | – | 1 | 6 | 4 | 1 | 3 | – | 3 |
| JK | 8 | 22 | 1 | 2 | 1 | – | 4 | 3 | 2 | 3 | 4 |
| SK | 19 | 22 | – | 2 | – | 2 | – | 2 | 1 | – | 2 |
| KP | 25 | 24 | 2 | – | 2 | 3 | 2 | – | 2 | 2 | 2 |
| KV | 18 | 22 | 1 | 1 | 1 | 1 | 3 | 3 | 1 | 1 | 3 |
| AK | 13 | 22 | 2 | 2 | 3 | 2 | 2 | 2 | 2 | 1 | 3 |
| Total | 31 | 24 | 11 | 32 | 35 | 14 | 15 | 9 | 20 | ||
*
Site index gives the estimated main height (mean height of 100 trees per ha with highest diameter-at-breast-height in the 50-year-old trees) for Betula pendula in southern Finland (taken from Lintunen and Kaitaniemi, 2010).