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2023, № 6 (60) |
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ECOLOGY
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Kumacheva V.D. |
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Restoration of vegetation cover during ecogenetic succession on the technogenic territory in the conditions of the Lower Don |
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The article presents an analysis of the dynamics of the formation of vegetation cover on a technogenic territory. 48 species of flowering plants from 14 families were identified in an abandoned sand quarry. The species composition is dominated over all the years of observations by the families characteristic of the steppes – Asteraceae and Poaceae.
The share of the Asteraceae family is on average 34.0% of the total number of species, that is, the main share in the herbage. There is a decrease in the proportion of Asteraceae during the study period from 35.4 to 32.2%. The Poaceae family makes up an average of 23.4% of the total number of species in terms of the number of specimens. At the same time, it is important to note the absence of buckets. There is an increase in the proportion of Poaceae during the study period from 20.9 to 26.4%.
Legumes play a significant role in the formation of vegetation cover: Medicago lupulina, Melilotus officinalis, etc.
It is noted that a large proportion is mixed grasses – 71.2%, followed by cereals – 23.4% and legumes – 5.4% on average over the years of the study.
Herbaceous plants – perennials dominate among the life forms (53.4%), annuals make up 26.8%, biennials – 19.8% on average over the years of the study.
In general, the floral composition of the quarry indicates that it is at the weedy stage of demutation succession. Currently, overgrowth occurs mainly with weeds and weeds, but the introduction of steppe species has also been noted.
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