EMPIRICAL APPROACH FOR ASSESSMENT OF SOIL ORGANIC CARBON LOSSES BY WATER EROSION ON CALCIC CHERNOZEM

KUNCHEVA GERGANA SLAVOVA, DIMITROV PETAR DIMITROV

Abstract


Water erosion and loss of soil organic matter cause significant damages on the national economy of the Republic of Bulgaria. For development of sustainable agricultural systems, it is necessary to predict the development of these two degradation processes in order to effectively control them. Many models and methods have been created for this aim. Two of ways for assessment of soil organic carbon losses by water erosion are the parametric and the empiric approaches. The parameter sediment enrichment ratio (ER) was determined for two crops, grown by four tillage systems (in six years experiment. Except the parametric method, an empirical equation was developed for assessment of organic carbon losses by the amount of soil eroded.


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