Fig. 1From: Phosphorus availability in relation to soil properties and forest productivity in Pinus sylvestris L. plantationsVariables plot for the first (Dim1) and second (Dim2) components of the principal component analysis performed to the P fractions (PAEM, available P; PtNaHCO3, highly labile P; PtNaOH, moderately labile P; PHCl1M, primary P; Prec, recalcitrant P)Back to article page