Response variable Main factors Main factors Main factors Main factors Factor interactions Factor interactions Factor interactions Factor interactions Factor interactions Model p. Model p.
CO2
T
WT
LI
CO2 x T CO2 x WT CO2 x LI WT x T WT x LI
R2
df
D6S/D6R ratio
P
<0.001
0.004
<0.001
n.s.
n.s.
0.005
n.s.
n.s.
n.s.
0.77
4/31
F 19.0 9.8 64.5 9.4
Biomass production P n.s. <0.001 <0.001 0.003 n.s. n.s. n.s. 0.005 0.047 0.88 5/30
F 69.4 131.6 10.7 9.0 4.3
δ13C P <0.001 <0.001 <0.001 0.020 n.s. <0.001 n.s. n.s. n.s. 0.84 5/30
F 23.2 17.6 88.8 6.0 19.3
cc / ca P 0.046 0.035 <0.001 0.022 n.s. <0.001 n.s. n.s. n.s. 0.80 5/30
F 4.3 4.9 86.3 5.8 18.8
C/N ratio
P
0.003
0.083
<0.001
n.s.
0.074
0.022
n.s.
0.004
n.s.
0.68
6/29
F 10.9 3.2 27.5 3.4 5.9 9.5
N content P 0.013 n.s. <0.001 n.s. n.s. 0.070 n.s. 0.031 n.s. 0.58 7/28
F 7.1 19.6 3.5 5.1
Biomass density P n.s. n.s. <0.001 <0.001 n.s. n.s. n.s. 0.097 <0.001 0.93 6/29
F 180.5 137.6 2.9 54.9
Height increment
P
0.084
<0.001
n.s.
<0.001
0.020
n.s.
0.035
0.042
0.017
0.88
8/27
F 3.2 109.7 51.1 6.2 4.9 4.6 6.5