Biogeochemical Carbon Cycles Numerical Modeling in Wetland Ecosystems.

Last decades have been characterized by increasing global climate change that is associated with an increase in the content of greenhouse gases in the Earth's atmosphere. The main greenhouse gases include water vapor, carbon dioxide, ozone, nitrogen oxides and freons. Carbon biogeochemical cycles researches are of particular relevance. Wetland ecosystems are one of the biogeochemical cycles significant reservoirs. It is known that wetland contain huge reserves of carbon in the form of weakly decomposed organic matter and they are active sources of methane and a sink of carbon dioxide from the atmosphere. A dynamic model of biogeochemical carbon cycles in swamp ecosystems proposed. Qualitative research of ordinary differential equations system was carried out, the types of singular points were investigated, integral curves and phase portraits were constructed. [ABSTRACT FROM AUTHOR]