Properties of humic acids of soil under different management regimes.

摘要

The aim of the work was to determine the elemental composition, hydrophilic and hydrophobic properties and polydispersity of humic acids of soils under different management regimes. The research involved forest and agricultural soil samples. Humic acids were exposed to the following analyses: elemental composition, division into hydrophilic and hydrophobic as well as low- and high-molecular fractions with chromatographic methods. The present results, confirmed by the cluster analysis, showed that the basic factor conditioning the properties of humic acids is the soil type, but also one can disregard neither the soil management method nor the agricultural practices applied.