Abstract

The results of studies are presented in the framework of an extended dynamic model that describes the interaction of the biomass of the ecological system and resources in a situation of cyclically changing levels of negative impact (seasonal changes), which are an integral feature of the existence of phytocenoses. At the heart of this model is the perception that an environmental system is capable of accumulating the resources necessary for its own existence in the area of space in which the system is located. It is shown that in the conditions of cyclically repetitive changes in living conditions (seasonal changes), when the increase in biomass density occurs in the springsummer period and is limited, and the increase in resource density occurs in the autumn-winter period due to the humification of the fall, this model is able to qualitatively display some typical cases of the evolution of phytocenoses.