A NON-STANDARD BEHAVIOR OF THE MINIMAL MODEL OF CARBON CYCLE
The global minimal model of long-term dynamics of carbon in biosphere is considered given the absence anthropogenous carbon emissions in atmosphere. Qualitative analysis of the model shows that a set of model parameters from ranges of their estimations for current biosphere conditions exists, such that the system becomes unstable. Thus the changes observed in the carbon content in atmosphere, plant biomass and humus, and also the global temperature change, could be connected not only with human activity but also with natural changes in biosphere.