... (1.0) a Cation exchange capacity was determined as the sum of the extractable amounts of H+, Na+, K+, Ca+, Mg2+, Al3+, Fe3+ and Mn2+ from the BaCl2 extraction b Base saturation was calculated as the ... the major part of the variation in leaf nutrient concentrations For a given species at a particular site, the methods of soil analysis give only approximate estimates of actual nutrient availability, ... concentrations in leaves and wood biomass were analysed by analysis of the variances (ANOVA) with species and site as factors Only the main effects were analysed The Tukey – Kramer procedure (a variant...