STRUCTURE, CONDITION AND STABILITY OF ROADSIDE PLANTINGS IN CITIES OF BELARUS
On the basis of investigations of trees in roadside plantings in some cities of Belarus (Minsk, Vitebsk, Grodno, Polotsk, Borisov and Svetlogorsk) the estimation of structure of plantings, their conditions and stability has been done. It has been revealed that in these cities in roadside plantings the share of small resistant to air pollution species (Tilia cordata and Aesculus hippocastanum) is high (accordingly 32,7-51,5 % and 7,3-27,5 %). The greatest damage has been noted on the trees of early young and old age groups. The determination factor between categories of streets in Minsk (on intensity of emissions) and indexes of condition of plantings has been calculated. Its value (R 2= 0,8) testify about high influence of air pollution by motor transport on a condition of plantings. Influence of the soils salinization (from anti-icing mixes) on the trees has been estimated by comparison of values electric conductivity of soil solutions under trees and categories of condition of trees (the determination factor R 2= 0,43).