Thermal stability of the humus system
1998
Rajchev, T. (Institut po Pochvoznanie i Agroekologiya "N. Pushkarov", Sofia (Bulgaria))
The possibility of thermal analysis to determine the relation between stability and humus structure through pyrolys of soil samples is used in the study. The investigated soils from the descending order as follows: leached smolnitzaleached chernozem; grey forest soillidht grey forest soil as a rezult of aromatic share in the soil organic matter. The thermal analysis of the soil samples in natural state comparativly well shows the correlation between stability and genetical features in the structure of the humic system. In the progress of the oxidazability in the thermal stability increases. Thermogravimetrical data and energetic parameters show a strong correlation in proportion between their alfatic and aromatic components. On this base the investigated soils form well distinguished evolutional order reflected the intramollecular differentiation of the organic components in the humus composition.
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