PARTICIPATION OF PINE IN THE FORMATION OF TIMBER STOCK IN THE CITY PARKS OF YEKATERINBURG
L. I. Atkina, A. M. Morozov
Ural State Forest Engineering University, Yekaterinburg, Russian Federation
Keywords: Scots pine, phytomass, urban park, transformation of the stands
Abstract
City parks are an integral part of the green infrastructure of Yekaterinburg, maintaining and regulating various ecosystem services. More than half of the city’s parks are created on the basis of natural plantings integrated into the urban environment during the construction of new districts. The purpose of the study is to identify the degree of Scots pine ( Pinus silvestris L.) participation in the formation of phytomass reserves of plantings of large parks in Yekaterinburg that arose during urbanization. The applied approach will reflect the level of anthropogenic transformation of the planting through the change in the stock of stem mass of Scots pine. The plantings of ten parks located in different parts of the city and created in different periods were studied: «Sem klyuchey» (Seven springs), «Zelenaya Roshcha» (Green grove), im. Chkalova (named after Chkalov), along the street of Chkalov, im. Agafonova (named after Agafonov), Kamvolny Kombinat (Worsted mill), Letniy «Uralmash» (Summer), Kompressorny Microrayon (Compressor microdistrict), plantings within the boundaries of the regional hospital and Park-stadion «Khimmash» (Park-stadium of chemical engineering plant). To assess the ecological efficiency of tree species, the indicator of the stem wood stock was chosen as the most accessible for working with growing trees. It is known that the stock closely correlates with the mass of the tree, which acts as an integrated indicator reflecting the participation of certain plant species in ecosystem services, primarily in carbon-depositing and oxygen-producing activities. In the course of the study, based on the tree inventory, the species composition, indicators of the sanitary condition of trees were determined, and the stock of stem mass was calculated. As a result of the study, it was established that there is a negative relationship between the share of introduced species in the massifs of large parks in Yekaterinburg, the stock of stem mass and the health condition of Scots pine.
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