Seasonal changes in the woody plants development in an urbanized environment

Abstract

The features of the phenological development of woody plants in green urban plantations in the dry steppe zone have been studied. The phenological phases of woody plants and shrubs are described and analysed: the beginning of bud swelling, the beginning of bud opening, the beginning of leaf opening, the beginning of flowering, the end of flowering, the beginning of fruit ripening, and mass loss of mature fruits. The onset of phenological seasons for the steppe zone has been determined. Formed groups of plants according to the terms of leafing and flowering. The calendar dates of the onset of phenological phases of trees and shrubs in an industrial urban environment are analysed. The sum of effective temperatures for the main phenological phases of woody plants in the steppe zone has been determined. Decorative dendrological groups have been developed for phenological phases of leafing and flowering of woody plants for urban landscaping in the dry steppe zone. Practical recommendations are given for grouping plants by flowering time for landscape construction.