Introduced tree and shrub species for sustainable landscape compositions in the urban conditions

Russiаn Reseаrch Institute of Fruit Crоp Breeding (VNIISPK), Zhilino, 1, 302530, Orel district, Orel region, Russia

^* Corresponding author: ozherelieva@vniispk.ru

Abstract

Low temperature is оne оf the mоst significаnt limiting factоrs determining the distribution of tree species. Evaluation of the degree of freezing of tree and shrub species is of great importance for decorative gardening. Plants freeze a lot not only in harsh winters, but also during prolonged thaws with a subsequent drop in temperature, which negatively affects their ornamentation. In this regard, one of the main ways to preserve the ornamental and plant biodiversity of city parks in a temperate continental climate is to replenish existing plantings with frost-resistant tree species. It is the first study of the frost resistance of introduced trees and shrubs, which was made to isolate species adapted to the winter conditions of the temperate continental climate to form stable landscape compositions in urban parks. Based on the results of artificial freezing, species of woody plants with high frost resistance were selected: Betula kelleriana, Betula raddeana, Staphylea pinnata, Cotinus Coggygria and Pinus pallasiana. The above species of wood are recommended for sustainable landscape design in the city.