EN
The article describes the results of field studies carried out in the period from April 2013 to May 2014. The study concerned the assessment of the magnitude of CO₂ emissions from marsh soils in the area of Czerwone Bagno (Red Swamp), which is a part of the largest complex of marsh in Poland. The authors used the closed chamber method to measure seasonal variability of net ecosystem CO₂ emission and drew attention to the impact of environmental factors (air temperature, air pressure and soil moisture) on it. The highest values of average daily CO₂ emission (over 630 mg(CO₂)×m⁻²×h⁻¹) were recorded in late spring and summer. Lowest values were obtained in late autumn and winter (in the range of 178-212 mg(CO₂)×m⁻²×h⁻¹). The need for monitoring of wetlands in temperate latitudes is stressed due to the progressive process of wetlands drying which enables the release of large quantities of greenhouse gases – CO₂, CH₄ – into the atmosphere.