Species composition dynamics of woody plants by the example of gardens and squares of the historical center of St. Petersburg

Preserving the historical appearance of objects of landscape architecture is one of the most important tasks of protecting historical heritage. This task would not be feasible without studying the species composition and dynamics of the historical range of ornamental plants. A change in the species composition during the operation and restoration of such objects naturally leads to a serious change in their historical appearance. An analysis of the species composition of the vegetation in historical gardens, monitoring its state in harsh urban environment, and finding solutions to preserve the appearance of historical objects without violating historically defined features of the area are relevant today.