Considerations on the organic matter and humus division in the soils from Maramureş Mountains
Keywords:organic matter, humic fractions, soils, Maramureş
In this paper some appreciations are made regarding the total organic matter and humic fractions in a few soils which are representative for Maramureş Mountains. Representative subtypes of soils from the Cambisoils class have been analyzed: typical eutricambosoil, typical prepodzol, skeletal prepodzol and lithic prepodzol. Comparing the data from the analyzed profiles, there is a difference in terms of organic accumulation: typical eutricambosoil has the best mineralization of organic matter; typical and skeletal prepodzol have high and similar values, organic material mineralization is decelerating and lithic prepodzol subtype has the highest organic accumulation. Qualitatively, there are some differences in the degree of humification of organic matter, the main distribution of humic fractions (fulvic acids, humic acids, humins) on soil horizons, and the emergence of accumulations horizons of fractions.