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Table 4 Model errors calculated through Eqs. 7 to 12

From: Stand-level biomass models for predicting C stock for the main Spanish pine species

sp Model ME MAE RMSE MPE MAPE RMSPE
Ps Basic −0.026 11.280 14.592 −2.903 10.641 15.843
Basic M −0.010 11.183 14.477 −2.847 10.583 15.774
vm −0.039 8.711 11.444 −1.930 7.935 11.626
Total −0.046 8.679 11.384 −1.955 7.930 11.631
Pp Basic 0.198 7.950 11.198 −2.173 10.916 15.593
Basic M 0.198 7.950 11.198 −2.173 10.916 15.593
vm 0.199 7.468 10.794 −1.894 10.135 14.625
Total −0.013 5.629 7.520 −1.919 7.695 11.066
Ph Basic 0.064 3.899 5.922 −0.640 7.244 10.206
Basic M 0.077 3.845 5.836 −0.517 7.208 10.118
vm 0.095 3.609 5.082 −0.383 7.182 9.865
Total 0.059 3.246 4.327 −0.374 6.456 8.388
Pn Basic −0.166 7.564 10.430 −2.108 7.964 10.803
Basic M −0.173 7.511 10.364 −2.108 7.892 10.670
vm −0.037 3.956 5.820 −0.783 4.249 6.254
Total −0.078 3.867 5.615 −0.949 4.224 6.110
Pt Basic −0.018 4.993 7.240 −1.002 5.244 7.278
Basic M −0.018 4.993 7.240 −1.002 5.244 7.278
vm −0.018 4.993 7.240 −1.002 5.244 7.278
Total −0.012 4.988 7.210 −0.965 5.224 7.219
  1. sp, species as in Table 3. Model, names of models, Basic, Basic M, vm and Total correspond to Eqs. 4, 5, 6 and 8 respectively. ME mean error (Mg·ha− 1), MAE mean absolute error (Mg·ha− 1), RMSE Root mean square error (Mg·ha− 1), MPE mean percentage error (%), MAPE mean absolute percentage error (%), RMSE Root mean square percentage error (%)