Dynamics of the Content of Aromatic Acids in Biogeocenoses of Stationary Soil Lysimeters

Resumo

This is the first work devoted to the study of the content and dynamics of a number of benzeneand phenolcarboxylic acids in the debris–litter–soil system under conditions of stationary soil lysimeters. This study has shown that with the rise in humification, benzoic and 4-hydroxybenzoic acids begin to play the leading role, which is typical for coniferous and broad-leaved ecosystems. The similar transformation of aromatic carboxylic acids under significantly different phytocenoses can be explained by the considerable participation of leaf litter in coniferous ecosystems due to their close location. Low concentrations of benzene- and phenolcarboxylic acids in lysimetric waters (mainly 4-hydroxybenzoic and benzoic acids) are likely related to their considerable adsorption in the top humus horizons, accumulation in the mantle loam, and subsequent migration with lysimetric water.