The article presents the results of studying the species structure, abundance and quality of seed material of shrubs in the floodplain of the Ural River. The most frequently encountered species was Rosa majalis and Lonisera tatarica (the frequency of occurrence for both species is 63%), which remain viable after more or less prolonged flooding with flood waters and withstand their alluvial sleep. Rhamnus cathartica (53.6%) and Prunus spinosa (51.2%) can also be attributed to the number of commonly seen speciesThe least encountered species were Elaeagnus angustifolia, Euonymus verrucosa, Cotoneaster melanocarpus, Corylus avellana, Crataegus ambigua, which were found in only one type of forest. At the same time, germination, viability and high quality met standard quality indicators. Cerasus fruticosa seeds were characterized by the highest sowing qualities, the least - by Ribes nigrum.

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The article presents the results of a study of the state of forest ecosystems growing in the zone of the Orenburg gas-chemical complex. The authors established a taxation characteristic depending on the degree of remoteness from the source of pollution, the degree of accumulation and the accumulation series of heavy metals in the forest litter, and the horizontal crown density was calculated. All obtained data were analyzed using statistical analysis methods. The data obtained can be used for practical purposes.

With extremely low forest cover in the Orenburg region (4.6 %), where the environmental stress factor is particularly acute, forests have exceptional climate control, soil protection, and sanitary and hygiene. The priority area of practice and science is the preservation and growth of the forests of the region, which serves as a kind of framework in stabilizing the environmental situation in the region. The presented work shows the state of forest stands under conditions of anthropogenic impact. The culmination of the current radial growth has been established and the so-called “surge” of the current growth of tree stands has been detected with the accumulation of threshold levels of toxicants in a polluted environment, which subsequently leads to loss of stability and destruction of plantations.

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