THE FLORIDA STATE UNIVERSITY ARTS AND SCIENCES ...

R
dn
= 0.25 ∗Temperature
( ° C) - 0.04 ∗ WFP (%) - 0.93
+ 3.39 ∗ pH
- 18.18 (R
2
- 0.04*
= 0.
2)
Nitrate
Concentration
(
125
∗
OC (%)
-1
μ g N g soil) ----- Equation 4.7
Table 4.9 Texture 3, Linear multi-regression with all variables.
Coefficients Estimate Std.Error t-value Significance
Intercept -21.09 10.17 -2.07 *
Bulk Density (g cm -3 ) -13.94 7.17 -1.95 .
NO3 - Conc ( µg N g -1
soil) 0.00 0.01 0.38
OC (%) -1.24 0.47 -2.65 *
pH 5.53 1.37 4.04 ***
Soil Depth (cm) 0.13 0.16 0.79
Temp (ºC) 0.44 0.13 3.33 **
WFP (%) 0.01 0.03 -0.06
Signif.Codes Signif.Codes Signif.Codes
0 '***' 0.001 '**' 0.01
0.01 '*' 0.05 '.' 0.1
0.1 1
Table 4.10 Texture 3, linear multi-regression with selected variables (S)
Coefficients Estimate Std.Error t-value Significance
(Intercept) -18.18 7.49 -2.43 *
NO3 - Conc ( µg N g -1 soil) 0.01 0.01 0.57
OC (%) -0.93 0.46 -2.03 *
pH 3.39 1.14 2.96 **
Temp (ºC) 0.25 0.12 2.09 *
WFP (%) -0.04 0.03 -1.28
Signif.Codes Signif.Codes Signif.Codes
0 '***' 0.001 '**' 0.01
0.01 '*' 0.05 '.' 0.1
0.1 1