Some Naturalized and Wilded Woody Plants in the Vcinity of Tbilisi

Abstract

The article deals with the contemporary condition of some naturalized and wilded woody plants in the vicinity of Tbilisi: Koelreuteria paniculata Laxm., Cercis siliquastrum L., Ailanthus altissima (Mill.) Swingle., Fraxinus ornus L.  and the nature of  their participation in phytocenoses.  The research took place in Tbilisi surrounding, approximately in 20 places. The study revealed that Koelreuteria paniculata Laxm.,  Cercis siliquastrum L. Ailanthus altissima (Mill.) Swingle, Fraxinus ornus L., are distinguished by aggression, and those who have a high coefficient of multiplication, propagate well by seeds and root shoots. Besides, they get well into natural and artificial phytocenoses, and win in competition with local and introduced plants and micro groupings, causing their transformation. It is necessary to limit the spread of these introduced plants, in order to avoid complete destruction of local phytcenoses and decorative plants.