Table 3.
Annual tree mortality and forest insect disturbance for different provinces (0: Ontario; 1: Quebec), different dominant tree species (4: balsam fir; 3: black spruce; 2: trembling aspen; 1: jack pine; 0: others), different proportions of hardwoods, different maturity classes (0: <80 years; 1: ≥80), diameter classes (0: <10 cm; 1: 10 to 15; 2: ≥15), latitude, and elevation
Tree mortality | Forest insect disturbance | ||||
---|---|---|---|---|---|
Variables | β | p | β | P | N |
Province | 0.6729 | <0.0001 | 16.5221 | <0.0001 | 226 |
Dominant tree species | 0.1926 | <0.0001 | 2.0980 | 0.0307 | 226 |
Proportion of hardwoods | −0.8508 | 0.0011 | −5.4959 | 0.0020 | 226 |
Mature or not | −0.2162 | 0.1026 | 0.0193 | 0.9586 | 226 |
Diameter class | 0.0064 | 0.9571 | 0.0277 | 0.6961 | 226 |
Latitude | −0.1114 | 0.0210 | −0.0522 | 0.6968 | 226 |
Elevation | 0.0004 | 0.9200 | 0.0014 | 0.1190 | 226 |