Table 3 Two-way ANOVA of the effect of forest type (natural versus planted), precipitation (Humid, Medium and Arid) and their interaction term on overstory stand parameters
From: Vegetation structure of planted versus natural Aleppo pine stands along a climatic gradient in Spain
Stand parameter | R 2 | Variable | SS | df | F | P |
|---|---|---|---|---|---|---|
Density | 81.6 | Forest type | 715 327.0 | 1 | 101.9 | **** |
Precipitation | 48 374.0 | 2 | 3.4 | n.s. | ||
Forest type × precipitation | 17 442.0 | 2 | 1.2 | n.s. | ||
Basal area | 85.7 | Forest type | 83.1 | 1 | 22.0 | **** |
Precipitation | 468.0 | 2 | 62.0 | **** | ||
Forest type × precipitation | 71.7 | 2 | 1.2 | n.s. | ||
Canopy cover | 73.4 | Forest type | 117.3 | 1 | 2.0 | n.s. |
Precipitation | 3 351.2 | 2 | 28.8 | **** | ||
Forest type × precipitation | 663.5 | 2 | 5.7 | * |