Laboratoryjne badania zatrzymywania wody w poziomach organicznych i mineralnych gleb wybranych dolnoreglowych drzewostanow swierkowych w Beskidzie Slaskim. Czesc II. Relacje miedzy zdolnoscia zatrzymywania wody a gestoscia objetosciowa probki

The regression formulas indicate a significant relationship between the initial moisture content and the density of soils with different content of organic matter. Differences in soil density can also explain the variability in the amount of water stored after a single rainfall episode Statistical tests indicated, that soil density explains 77% of the variability in the optimal initial moisture content and 69% of the variability of the largest increases in the amount of water stored in the sample. For the experiments with longer breaks between two consecutive rainfall episodes the error of estimation was smaller than for experiments with shorter breaks: this suggest, that the time of absorption of water by the organic matter in forest soils is also an important factor.