Table 5 Fitted parameters and goodness of fit for two alternative models for live fuel moisture content (LFMC) for the oak species (Quercus ilex). The parameters for the LFMC model include the osmotic potential at full turgor \({\pi }_{0}\) (MPa), the modulus of elasticity of the symplasm (\({\varepsilon }_{Sym}\), MPa), the leaf dry matter content (LDMC, mg.g−1), and the leaf apoplasmic fraction (\({\alpha }_{f}\)). In the first alternative model (αf = 0), αf was held constant at 0, completely disregarding the apoplasmic compartment. In the second model (free αf), αf to be determined freely by the fitting algorithm. The performance metrics include the root-mean-square error (RMSE, %), the mean absolute error (MAE, %), and the coefficient of determination (R2)
Model | Parameters | Performance | |||||
|---|---|---|---|---|---|---|---|
\({\pi }_{0}\) | \({\varepsilon }_{Sym}\) | LDMC | \({a}_{f}\) | RMSE | MAE | R2 | |
\({a}_{f}=0\) | − 3.7 | 15.9 | 516 | 0 | 7.8 | 6.5 | 0.76 |
Free \({a}_{f}\) | − 3.0 | 15.7 | 520 | 0.22 | 9.4 | 7.5 | 0.78 |