Chemistry Reference
In-Depth Information
Scale n β
1
β
1
´ R²
k ± S.D.
E
m
± S.D. Qleaf
m
± S.D.
Pot (E
V
) 199 -0,000001 0,007 0,69 - 5,41 ± 2,07 a 1027 ± 517
Plot (E
P
) 516 -0,000002 0,0094 0,64 - 5,60 ± 2,27 ab 802 ± 465
Watershed (E
B
) 78 -0,000003 0,0106 0,83
-
3,96 ± 2,66 c 505 ± 508
Scaling up (E
P
´) 516 -0,000001 0,007 1,00 1,25 ± 0,06 5,65 ± 2,62 b 802 ± 465
Scaling up (E
B
´) 78 -0,000001 0,007 1,00 1,38 ± 0,14 3,56 ± 2,66 c 505 ± 508
Scaling up (E
B
´´) 78 -0,000002 0,0094
1,00
- 3,58 ± 3,12 c 505 ± 508
Means followed by same small letter in columns do not differ by Tukey test at 5% probability. n = number of
measurements (mean of 4 measures).
Table 4.
Model coefficients of
E = f (Qleaf)
with observed data from E
v
, E
P
, E
B
, and adjustment to
simulate the scaling up (E
P
',E
B
', E
B
''), coefficient of determination (R²), k, E and Qleaf mean ± mean
standard deviation (k and E
m
± S.D., mmol m
-2
s
-1
; Qleaf
m
± S.D.,
μmol m
-2
s
-1
).
Scale n β
2
β
2
´ R²
k ± S.D.
Gs
m
± S.D. Qleaf
m
± S.D.
Pot (Gs
v
) 199 -0,00000009 0,004 0,64 - 0,34 ± 0,16 a 1027 ± 517
Plot (Gs
p
) 516 -0,0000002 0,0006 0,59 - 0,28 ± 0,09 b 802 ± 465
Watershed (Gs
B
) 78 -0,0000005 0,0011 -0,17
0,30 ± 0,09 bc 505 ± 508
Scaling up (Gs
P
´) 516 -0,00000007 0,004 1,00 1,31 ± 0,12 0,26 ± 0,10 b 802 ± 465
Scaling up (Gs
B
´) 78 -0,00000007 0,004 1,00 2,26 ± 0,53 0,26 ± 0,19 b 505 ± 508
Scaling up (Gs
B
´´) 78 -0,0000002 0,0006
1,00
1,43 ± 0,41 0,18 ± 0,11 d 505 ± 508
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 5.
Model coefficients of
Gs = f (Qleaf)
with observational data Gs
V
, Gs
P
, Gs
B
and adjustment to
simulate scaling up (Gs
P
´, Gs
B
´, Gs
B
´´), coefficient of determination (R ²), k, Gs and Qleaf mean ± mean
standard deviation(k and Gs
m
± S.D., mol m
-2
s
-1
; Qleaf
m
± S.D., μmol m
-2
s
-1
).
Scale n β
3
β
3
´ R²
k ± S.D.
E
m
± S.D. VPD
m
± S.D.
Pot (E
V
) 225 -0,4519 10,311 0,06 - 5,07 ± 1,87 a 1,23 ± 0,35
Plot (E
P
) 506 -1,0627 6,0481 0,44 - 5,75 ± 2,32 b 1,33 ± 0,49
Watershed (E
B
) 78 -0,927 5,6528 0,38
-
3,96 ± 2,62 c 0,88 ± 0,41
Scaling up (E
P
´) 506 -0,4519 10,311 1,00 1,02 ± 1,24 5,79 ± 1,49 b 1,33 ± 0,49
Scaling up (E
B
´) 78 -0,4519 10,311 1,00 0,57 ± 1,26 3,99 ± 1,47 c 0,88 ± 0,41
Scaling up (E
B
´´) 78 -1,0627 6,0481 1,00 - 4,19 ± 1,51 c 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 6.
Model coefficients of
E = f (VPD)
with observed data from E
V
, E
P
, E
B
and adjustment to
simulate scaling up (E
P
´, E
B
´, E
B
´´), coefficient of determination (R²), k, E and VPD mean ± mean
standard deviation (k and E
m
± S.D., mmol m
-2
s
-1
; VPD
m
± S.D., kPa).
The scaling up with the involvement of the Qleaf in
E
B
'
and
E
B
'
' generated values so similar
that it is not possible to distinguish between these two models in Figures 3b and 3c.
Similarly when using the variable VPD (Figure 3e, 3f).
