Spatio-time analysis of the transformation of the cluster аrboretum park «VNIALMI» bioreresource collection

The article presents studies of spatiotemporal transformations of cluster bioresource collections of the “VNIALMI” arboretum park. Raster and vector multi-temporal maps of the spatial distribution of tree and shrub plantings of the arboretum have been developed. The localization of territories most frequently exposed to fires for the period from 2004 to 2023 has been identified. A cartographic basis for the geodatabase of the bioresource collection of the arboretum of the Federal Scientific Center for Agroecology of the Russian Academy of Sciences has been formed for the purpose of further restoration and management.
Introduction. Dendrology collections, including arboretums and arboretums, are significant elements of the natural and ecological framework of urbanized territories, performing the most important functional tasks: sanitary, hygienic, recreational, aesthetic, etc. Being involved in the process of providing ecosystem services as a natural resource, arboretum collections experience significant anthropogenic and techno genic impacts, which leads to inevitable qualitative and quantitative changes. The relevance of assessing the spatial and temporal transformations of tree and shrub plantations on the territory cluster arboretum park of the «VNIALMI» is due to the need to understand the current situation in order to plan measures to restore the resource potential and maintain the further sustainable development of the collection.
Object. The objects of study are arboretum collections on the territory of the Volgograd cluster arboretum park «VNIALMI», located in the southern part of the Sovetsky district of the city of Volgograd, with an area of 27.7 hectares (cadastral number 34:34:060061:10).
Materials and methods. The method of cartographic and aerospace monitoring was used in the work. A retrospective analysis of the spatial transformations of the arboretum collection was carried out using ultra-high resolution satellite images obtained from the Google Earth Pro service. Georeferencing of satellite images, their subsequent interpretation and calculations of quantitative indicators were carried out in the Quantum GIS 3.18 geoinformation system. For mapping tree and shrub plantations, the method of photo-evaluation was used.
Results and conclusions. As a result of the research, spatial and temporal transformations were revealed and the current spatial distribution of the bioresource collection on the territory of the arboretum was determined. In accordance with the phenological phases of plant communities and the climatic features of the study region, the optimal period was determined, from July to September, for obtaining initial satellite images for deciphering tree and shrub plantations. In the process of mapping, geocoding and photo standardization of data on the arboretum collection, raster and vector multitemporal maps of the spatial distribution of tree and shrub plantations of the arboretum were developed. Quantitative indicators of the spatial transformation of the collection are determined. A decrease in the area of the territory occupied by tree and shrub plantations was established from 15.08 to 6.83 hectares for the period from 2004 to 2023. The lowest area indicator was revealed - 4.75 hectares (17% of the total area of the arboretum) – in 2015. The localization of the areas that were most often exposed to fires during the studied period was determined. The localization of the areas that were most often exposed to fires during the studied period was determined. The cartographic basis of the geodatabase of the bioresource collection of the cluster arboretum park «VNIALMI» (FSC Agroecology RAS) for further restoration and management has been formed.

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