Table 1.

Model evaluation

Modelps-R2, %RMSPECP, %
  • Shown are the pseudo-R2 (ps-R2), RMSPE, and CP statistics for all nine models, for each of the three traits. The entries in boldface type correspond to the model producing highest ps-R2, lowest RMSPE, or CP closest to 0.95. The categorical PFT-free model (Cf) produces a constant estimate and hence ps-R2 is not defined. Each model is indicated by a two-letter abbreviation: C, categorical (no regression); L, linear (linear regression); and S, spatial (linear regression with spatial term) and the accompanying PFT resolution: f, PFT-free (no PFT information); b, broad (4-PFT); and n, narrow (14-PFT).