Carbon dioxide emission from the surface of podzolic soils

The regularities of the seasonal dynamics of the CO₂ emission from the surface of a podzolic soil under a bilberry pine forest of the middle taiga were revealed. In mid-May, after the snow melt, the CO₂ emission was 0.10–0.20 g of CO₂/m² per h. Then, the intensity of the CO₂ emission increased, reached its maximum (1.0 to 1.5 g of CO₂/m² per h) in July–August, and decreased down to 0.04–0.10 g of CO₂ g/m² per h in mid-October. The correlation between the rate of the CO₂ emission and the temperature and moisture of the soil was positive and negative: r = 0.34 to 0.91 and ?0.44 to ?0.86, respectively. According to the empirical model, 2.26–2.69 t of C-CO₂/ha were emitted during the warm time of the year.