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Contemporary Problems of Ecology

2006 year, number 2

On Some Models of the Time Course of Forest Growth

L. V. Nedorezov, A. Yu. Karlyuk

Abstract

A modification of  M. D. Korzukhin's three-age model of time course of growth of a plant community is considered within whose framework the influence of illumination (solar radiation) conditions on the appearance of new saplings of the lower storey and  the non-linearity of the influence of death of trees of younger classes are taken into account. Dynamic regimes of the model are determined, and it is shown that at certain values of parameters, periodic oscillations, trigger regime (asymptotic stabilization at one of two stable levels depending on the initial values) or stabilization at the only (globally stable) level arise in the model.