Fig. 1

Parameter recovery method (PRM) of tree size variables from yield tables of P. sylvestris in Guadarrama sites (Spain). \(I\): site index. \(t\): stand age. N: stand density.\({D}_{\mathrm{g}}\): quadratic mean diameter. \({D}_{\mathrm{o}}\): dominant diameter (mean diameter of the 100 thickest trees ha⁻¹). \(S\): thinning regime. \(PRM\): parameter recovery method