Chemistry Reference
In-Depth Information
Scale n β
4
β
4
´ R² k ± S.D. Gs
m
± S.D. VPD
m
± S.D.
Pot (Gs
V
) 225 -0,4015 0,4052 0,47 - 0,33 ± 0,19 a 1,32 ± 030
Plot (Gs
P
) 506 -0,0505 0,3075 0,07 - 0,30 ± 0,08 b 1,36 ± 0,51
Watershed (Gs
B
) 78 0,046 0,3092 0,52 - 0,30 ± 0,10 b 0,88 ± 0,41
Scaling up (Gs
VP
) 506 -0,4015 0,4052 1,00 3,85 ± 0,82 0,28 ± 0,01 c 1,36 ± 0,51
Scaling up (Gs
VB
) 78 -0,4015 0,4052 1,00 0,94 ± 0,69 0,30 ± 0,02 d 1,36 ± 0,51
Scaling up (Gs
PB
) 78 -0,0505 0,3075 1,00 0,93 ± 0,13 0,30 ± 0,02 e 0,88 ± 0,41
Means followed by the same small letter in columns do not differ by Tukey test at 5% probability. n = number of
measurements (mean of 4 measures).
Table 7.
Model coefficients of
Gs = f (VPD)
with observational data Gs
V
, Gs
P
, Gs
B
and adjustment to
simulate scaling up (Gs
P
´, Gs
B
´, Gs
B
´´),
coefficient of determination (R²), k, Gs and Qleaf mean ± mean
standard deviation (k and Gs
m
± S.D., mol m
-2
s
-1
; VPD
m
± S.D., kPa).
Figure 3.
Linear regression (with intercept forced to zero) between the simulated values of E in the plot
scale (E
P
´)
from the observed data in the pot scale (E
obs
) according to Qleaf (a) and VPD (d), simulated
values of E in the watershed scale (E
B
') from the observed data on the pot scale (E
obs
) according to Qleaf
(b) and VPD (e), simulated values of E in the watershed scale (E
B
'') from the observed data in the plot
scale (E
obs
) according to Qleaf (c) and VPD (f).
