Influence of the cenotic environment on the condition of a tree in park communities

The article presents materials on the determination of a tree's vital state, taking into account the composition of the phytocenosis. The study object is the dendropark of the Botanical Garden of the St. Petersburg Forestry University. Five model trees were selected for scientific research – one Quercus robur L. and four Tilia cordata Mill. These tree species are present in almost all parks in St. Petersburg. The selected model specimens have comparable characteristics in terms of age and height. The height, trunk diameter, and age of the trees were measured. When visually assessing the condition of a tree, a scale was used that was recommended by the Rules for sanitary safety in forests, which were put into effect on January 1, 2021. Within a 6-meter radius around each model tree, the species composition and main characteristics of trees, undergrowth, understory, and living ground cover were determined. The survey was conducted in accordance with Russian Patent № 2852509. It has been established that the vital state of a tree correlates with the composition of the phytocenosis, and it depends on intensity of influence from neighboring trees.

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