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2020, N 1 (39) |
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ECOLOGY
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Minnikova T., Lubentsova D., Kolesnikov S., Kazeev K. |
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The influence of sanation by humic substances on the biological consistence of oil-contaminated chernozems |
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The effect of humic substances on the enzymatic activity, CO2 emission of chernozem of the Rostov region under pollution with various doses of oil was studied. It was observed that for 30 days at small doses of oil (1 and 5 %), the stimulation of the process of oil decomposition and the growth of biological activity in terms of enzyme activity and CO2 emission intensity is more intense than at a dose of 10% oil. The use of sodium humate can stimulate native soil biota by increasing the degree of decomposition of light oil fractions to CO2 and increasing the activity of dehydrogenases during the dehydration of organic oil substances. The introduction of sodium humate led to a greater restoration of the activity of soil enzymes than potassium humate due to the aliphatization of oil hydrocarbons in chernozem. It is advisable to use the activity of dehydrogenases and β-fructofuranosidase as enzymes involved in the natural carbon cycle in soils and CO2 emission as an indicator of the decomposition of oil hydrocarbons in the soil for bioindication of the restoration of the ecological state of oil contamination of chernozems after the influence of sodium humate.
Keywords: CHERNOZEMS, OIL CONTAMINATION, SANATION, POTASSIUM HUMATE, SODIUM HUMATE, CO2 EMISSION, Β-FRUCTOFURANOSIDASE ACTIVITY, DEHYDROGENASES ACTIVITY, BIODIAGNOSTIC |