Plant diversity of Absheron peninsula

In this article, we discuss the results ofstudying the flora of the Absheron Peninsula. Thedynamics of the species composition over the past70 years is considered. We were unable to find 206species in the habitats previously recorded by Karyaginin 1952. We included 678 species in the list of floraof the Absheron Peninsula, of which 599 specieswere classified as native flora. In accordance withthe direction of the dynamics of their habitats, wedistinguish five groups of native flora species: Extinct(not found on the territory of Absheron for more than50 years) – seven species, endangered (disappearedin several previously known localities) - 130 species,stable (found in previously known localities) – 209species, dynamic (disappeared in previously knownlocalities, but found in new localities) - 191 species,progressive (found in previously known localities andfound in new localities) - 47 species. It is well knownthat for any region the adventive element of the flora ismore dynamic than the native one. In total, we recorded97 adventive species for the Absheron peninsula, ofwhich 23 were new species for the flora of the region.We draw attention to the fact that since the beginningof the XIX century, the relative role of various sourcesof replenishment of the adventitious flora has changed.However, with the beginning of the new millennium, thecontribution of railways to the formation of the adventcomponent is noticeably decreasing.The number of newspecies entering the territory of the Absheron Peninsulaby rail is radically decreasing. During the periodcovering 9 years (from 2012 to 2020), we were not ableto find a single new adventive species that was intrudeby rail. On the other hands, the activity of cultivatedornamental trees, shrubs and herbaceous plants becamemore clearly visible. There is a significant increase inthe role landfills and wastelands in the formation of theadventive flora of the region