The article is devoted to the assessment of atmospheric air pollution in Rostov-on-Don for the period from 2019 to 2023. The assessment was carried out using a comprehensive indicator of atmospheric pollution for 5 pollutants (suspended solids, nitrogen dioxide, formaldehyde, sulfur dioxide and carbon monoxide). The main materials for the work were data obtained from the Environmental Bulletin of the Don and Yearbooks on the state of the atmosphere in cities in Russia. The dynamics of the city's atmospheric pollution over the specified period has been determined, as well as the territorial features of pollution and possible factors contributing to the current situation (the number of green spaces, the presence of enterprises, traffic flows). It has been established that the highest rates of atmospheric pollution are typical for the central part of the city, the most favorable environmental situation is in the east, and the western and northern parts are characterized by average pollution rates. A tendency of increasing atmospheric pollution has been established for the northern, central and western parts of the city, while the eastern part of the city is characterized by a gradual decrease in the content of pollutants in the atmosphere. The result of the work was the compilation of a map-scheme of atmospheric pollution in various parts of Rostov-on-Don.The main factors that determined the current environmental situation include: the volume of traffic load, the proximity of industrial zones and the level of landscaping of the territory.

Keywords: atmospheric air pollution, the state of the atmosphere, content of pollutants, environmental situation, the dynamics of pollution, state of the environment

The species diversity was studied and the ecological state of the tree and shrub vegetation on the territory of one of the oldest and largest parks in Rostov-on-Don - Maxim Gorky Park of Culture and Recreation was assessed. An area of 33,000 m2, located in the north-eastern part of the park, was allocated for study. 17 species of woody and shrubby plants were identified in the study area, among which the park-forming species are European linden (Tiliaeuropaea), Evergreen cypress (Cupressussempervirens L.), Common pine (the vital state of plants,the nature of the herbage closability, woody and shrubby plants, grassy lawn covering, urban park landscapes, the Park of Culture and Recreation named after Maxim Gorkiyabsence of signs of weakening (55%), and dead wood is only 1%. The quality of the lawn covering is quite low, and the soil under it is characterized by high compaction. Basically, the nature of the closure of the herbage is mosaic–group, and the projective coverage reaches maximum values (80%) for the entire study area in the early spring. Measures to preserve and optimize the park area are proposed.

Keywords: the vital state of plants,the nature of the herbage closability, woody and shrubby plants, grassy lawn covering, urban park landscapes, the Park of Culture and Recreation named after Maxim Gorkiy