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Table IV
Changes in the tree condition classes between two inventories (1981 and 2003) in the Oranienbaum Park. For both inventories, the percentage is based on the total number of living trees only.
| Species | % trees in condition classes 1 and 2 | p | ||
|---|---|---|---|---|
| 1981 | 2003 | |||
| Ash | 96.2 | 93.4 | 0.010 | |
| Alder | 94.1 | 96.6 | 0.027 | |
| Birch | 94.3 | 94.2 | 0.943 | |
| Linden | 99.0 | 96.9 | < 0.001 | |
| Maple | 95.6 | 92.8 | < 0.001 | |
| Oak | 98.1 | 96.2 | 0.002 | |
| Spruce | 97.0 | 99.0 | 0.001 | |