SOME ASPECTS OF DYNAMICS OF FLORA IN THE VICINITIES OF THE SETT LEMENT PAVLOVSKAYA SLOBODA (MOSCOW REGION)

A change in the species composition of the local flora of an arbitrary contour of the environs of the Pavlovskaya Sloboda settlement of the Moscow Region over a 50-year period has been detected. It is established that 435 species have retained their presence, 139 species have not been recorded in the flora, and 111 species have recently become part of the flora. Changes in the spectrum of the leading families are shown. It was revealed that the decrease in the occurrence was the dominant trend in the flora dynamics that covered more than half of the species (59 %), 24 % retained its occurrence status, the occurrence in 17 % of the species increased. The increase in flora vulnerability is shown by the ratio of occurrence of rare and common species in its composition. In general, over a period of 50 years, changes affected one third of the species composition of the flora