Specific Features of Polymorphism of the Minusinsk Climatype of Pine in the Cultures of the Shira Dry Steppe
I. V. Tikhonova
Abstract
Higher stability of the Minusinsk climatype of pine in the cultures of the Shira dry steppe in comparison with other climatypes from the forest and forest-steppe zones of Siberia is based on two morphological forms of pine which are most suitable for the new conditions. The characteristics of these forms are similar with those of a part of the trees of the local Shira climatype. However, in comparison with it, the Minusinsk climatype under more severe conditions is distinguished by lower polymorphism and the absence of pine forms which are most widespread in the local natural population.
