METHOD FOR DETERMINING ANNUAL AMOUNT OF CARBON EMITTED BY SOILS OF FOREST-STEPPE ZONE Russian patent published in 2024 - IPC G01N33/24 

FIELD: environment.

SUBSTANCE: invention relates to rational use of natural resources and environmental protection. A method has been disclosed for determining the annual amount of carbon emission from soils in the forest-steppe zone by measuring the average values for the growing season of the velocity of soil CO₂ flows, in which measurements of CO₂ emission from the soil surface using the chamber method are carried out during May of the year under study, 2 measurements per each decade on days with clear weather in the period from 9.00 to 13.00 hours, the resulting rate is averaged for one day and extrapolated for 7 months from April to October inclusive, which allows to determine the annual carbon emission from soils of a given ecosystem, using the formula: C_{emit. soil} = V_{SE CO2}× 0.273× 10× 214, where C_{emit. soil} is the amount of carbon emitted by the soil into the atmosphere per year, kg ha^-1 ; V_{SE CO2} is the CO₂ soil emission, obtained by measurements during May of the year under study, 2 measurements in each ten-day period on days with clear weather in the period from 9:00 to 13:00, g m^-2 day^-1 ; 0.273 is the conversion factor of the molar mass of CO₂ into the molar mass of C, dimensionless coefficient; 10 is the conversion factor for the mass of emitted carbon per unit area of soil g m^-2 to kg ha^-1, dimensionless coefficient; 214 is the duration of the period accompanied by the process of soil respiration, days.

EFFECT: assessment of the annual amount of carbon emitted by the soils of a given ecosystem, using experimental data on measuring average values of soil CO₂ flow rates during the growing season with minimal time spent on the process of obtaining such data.

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