Table 4 Effect from ANOVA for average RD and MOE before and after thinning: analysis with tree height
From: Variation in black spruce (Picea mariana (Mill.) BSP) wood quality after thinning
Test | Source | DF | DFDen | F ratio | Prob. > F |
|---|---|---|---|---|---|
Ln(Average RD) | Height | 3 | 25.32 | 10.7301 | <0.0001a |
Thinning | 1 | 57.21 | 3.2067 | 0.0786 | |
Thinning × height | 3 | 42.07 | 0.6460 | 0.5899 | |
Time | 1 | 171.4 | 0.2792 | 0.5979 | |
Time × thinning | 1 | 171.4 | 0.8895 | 0.3469 | |
Time × height | 3 | 170.6 | 0.2030 | 0.8942 | |
Time × thinning × height | 3 | 170.6 | 0.1315 | 0.9412 | |
MOE | Height | 3 | 21.36 | 1.0684 | 0.3834 |
Thinning | 1 | 25.39 | 19.5306 | 0.0002a | |
Thinning × height | 3 | 23.48 | 0.6229 | 0.6073 | |
Time | 1 | 38.81 | 26.7639 | <0.0001a | |
Tiime × height | 1 | 38.81 | 2.7163 | 0.1074 | |
Time × thinning | 3 | 38.72 | 2.1729 | 0.1068 | |
Time × thinning × height | 3 | 38.72 | 0.7231 | 0.5443 |