Table 4 Results of the two-way (species, planting density, and their interaction) and one-way (planting density) ANOVAs for traits measured during the 2009–2010 (A) and 2011–2012 (B) periods: *P ≤ 0.05, **P ≤ 0.01, ***P ≤ 0.001; ns, non-significant
Two-way ANOVA | One-way ANOVA | ||||
|---|---|---|---|---|---|
Species | Planting density | S × D | Black locust | Poplar | |
A | |||||
Growth | |||||
Height 2009 | ns | ns | ns | ns | ns |
Height 2010 | ns | ns | ns | ns | ns |
Circ. 2010 | ** | ns | ns | * | ns |
dHt/dt | ns | ns | ns | ns | ns |
dnl/d t | ** | * | ns | ns | ** |
Phenology | |||||
Bud burst | ns | ns | ns | ns | ns |
Bud set | * | ns | ns | ns | * |
GSL | ns | ns | ns | ns | ns |
Leaf traits | |||||
LA | *** | ns | ns | ns | ns |
SLA | *** | ns | ns | ns | * |
Nleaf | *** | ns | ns | ns | ** |
C/N | *** | ** | *** | ns | * |
Δ13C leaf | *** | ns | ns | ns | ns |
Branchiness | |||||
Sylleptic number | *** | ns | * | ns | * |
B | |||||
Growth | |||||
Height 2011 | ns | *** | * | ** | * |
Height 2012 | ns | *** | * | * | * |
Circ. 2012 | ns | *** | * | *** | *** |
Leaf traits | |||||
LA | *** | ns | ns | ns | ns |
SLA | *** | * | ns | ns | *** |
Nleaf | ** | ns | ns | ns | * |
C/N | ** | ns | * | ns | * |
Δ13C leaf | * | ns | ns | ns | ns |