Biological mineralization of organic matter in the modern virgin and plowed chernozems, buried chernozems, and fossil chernozems

The phenomenon of mineralization (biological mineralization) of organic matter in chernozems has been studied. A decrease in the content of C org with time can be considered an index of the organic matter mineralization. It is suggested that the humus horizons of modern chernozems contain the pools...

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Bibliographic Details
Published in:Eurasian soil science 2009-10, Vol.42 (10), p.1109-1119
Main Authors: Ivanov, I. V., Pesochina, L. S., Semenov, V. M.
Format: Article
Language:English
Subjects:
Amino acids
Analysis
Biosphere
Chemical composition
Closed systems
Decomposing organic matter
Decomposition
Earth and Environmental Science
Earth Sciences
Geological time
Geotechnical Engineering & Applied Earth Sciences
Humic acid
Humic acids
Humification
Humus
Mesozoic
Mineralization
Paleopedology
Paleozoic
Sediments (Geology)
Soil Chemistry
Soil microorganisms
Soil sciences
Soils
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Summary:The phenomenon of mineralization (biological mineralization) of organic matter in chernozems has been studied. A decrease in the content of C org with time can be considered an index of the organic matter mineralization. It is suggested that the humus horizons of modern chernozems contain the pools of organic matter of different ages: easily decomposable organic matter, labile biologically active humus, stable biologically active humus, and relatively inert humus. The composition and mean residence times of these pools and their contribution to the total organic matter content have been estimated. The particular types of the biological mineralization have been determined on the basis of the comparison between the velocities of mineralization (M) and humification (H) processes: total unidirectional mineralization (M ≫ H), equilibrium mineralization (M ∼ H), nonequilibrium mineralization (M>
ISSN:1064-2293
1556-195X
DOI:10.1134/S1064229309100056