Analysis of model anthropogenically transformed floras in the south-west of Middle Russian upland

The research of model anthropogenically transformed floras in the south-west of Middle Russian Upland allowed to carry out a comparative analysis of their structures. It is established that the increase of anthropogenic influence on the structures lead to reduction of the number of therophytes, hamephytes and geophytes. The value of monocarpic life forms in the studied floras is increasing. It reflects the processes of the total depletion of their floristic composition, vulgarization, and cosmopolitanization of floras. At the strengthening of anthropogenic factors action there is a tendency of reduction of the species proportion with narrow ecological amplitude: marsh ( from 4.5 to 0.2 %), water ( from 1.4 to 0.2%), steppe ( from 21.5 up to 7.3 %), forest (from 14.2 to 0.5 %), with an overall increase of sinanthropic species. The studied floras with a high degree of anthropogenic transformation are characterized by high content of common weed and invasive species.