Monitoring carbon dioxide fluxes during fallow land conversion in the Subtaiga zone

Abstract

The work is devoted to the study of the temporal variability of CO2 fluxes on fallow lands during their introduction into agricultural turnover. The aim was to determine the CO2 emissions of soil from fallow lands during their introduction into agricultural turnover by different technologies under the conditions of the subtaiga natural-climatic zone of the southern part of western Siberia. In 2022, scientific research was carried out on key plots of fallow lands in the subtaiga zone of the Omsk region. The soil of the fallow land plot is thick grey forest loamy (Luvic Greyzemic Phaeozems). It was established that technologies of fallow lands introduction into turnover have a significant impact on CO2 emission. Compared to the control, it has increased by 1.44 times in the subtaiga zone under agrotechnological technology (soil treatment) and by 1.27 times under combined technology (soil treatment + herbicide treatment). The materials are the basis for information-methodological support for greenhouse gas monitoring in the fallow lands of the territories of the south of western Siberia of Russia.