Abstract <p>Soil respiration (Rs) was studied in mid-taiga herb-blueberry and sphagnum spruce forests. The dynamics of Rs from May to October is shown. Soil temperature had a positive effect on Rs, while soil moisture had a negative effect. A reliable relationship was observed between Rs and air temperature, while there was no relationship with precipitation. The amount of carbon entering the atmosphere with Rs (C–CO₂) was calculated based on the dynamics of soil temperature of the studied phytocenoses and air temperature at the weather station. Using air temperature as a predictor in a mathematical model describing the time-dependent change in respiration led to an overestimation of the C–CO₂ flux. A conclusion is made about the applicability of data sets obtained at the weather station for assessing soil respiration in the warm period of the year.</p>