Assessment of the Mobility and Time of Renewal of the Densimetric Fractions of Organic Matter in Chestnut Soils from the Ratio of Stable Carbon Isotopes
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The results of experimental studying of the organic matter status in soils using methods of granulodensimetric fractionation and the geochemistry of the stable carbon and nitrogen isotopes are presented. The organic and organomineral matter in chestnut soils representing a chronoseries-stages of natural changes in the vegetation with different carbon isotope compositions-were investigated. The organomineral fractions and fractions of free organic matter were distinguished, the changes in their proportion due to the changes in the vegetation were analyzed, and the residence time of the carbon in the organic matter of the fractions was assessed. 2010 Pleiades Publishing, Ltd.