Home – Home – Jornals – Contemporary Problems of Ecology 2005 number 1

Adaptation of the larch Larix gmelinii at the levels of a single tree, a stand, and the species in the northern taiga of Central Siberia is considered. It is established that the species is characterized by a low fire resistance of single trees and stands and the species as a whole has a high fire resistance, thanks to which it retains its area. It is demonstrated that at early stages of post-fire successions the larch displays the properties of pyrogenic explerent, wherein r-selection takes place. When the forest restitution period is mainly completed, the explerent state is replaced by the patient one including all the properties characteristic of K-selection. The notion of adaptive reactions to the pyrogenic factor at a single tree, plantation and forest stand levels have been united into a whole adaptive complex, which is the determinant condition of the species viability.