Адвентивный элемент в различных типах растительных сообществ Алтайского края

Abstract

Forest steppe territory of the Altai Territory is 80 % composed of anthropogenically altered communities: agrophytocenoses, pastures, hayfields, deposits and ruderal habitats. From the mid-20th century, large-scale movements of people and various seed material occurred in connection with the rise of virgin and fallow lands in 1954–1960. The basis of this work includes about 320 geobotanical descriptions performed in the Altai Territory. The obtained data were used as a basis for creating a database (Turboveg) for the propagation of the studied adventitious species and their role in the formation of plant communities. To isolate the proportion of adventitious plant species in the communities, processing was carried out using the Juice 7.0 program. The greatest species diversity is characteristic of meadows (555), the minimum number of species for agrophytocenoses (64). The largest share of the Adventists' participation is characteristic of agrophytocenosis (35,9 %). The minimum number of Advent and the share of participation in the flora is observed in forests (1,7 %). Chenopodium album was found in all types of vegetation, the maximum occurrence ratio reached in agrophytocenoses (67 %). Berteroa incana, Nonea rossica, Convolvulus arvensis were found in three types of vegetation out of four.Amaranthus albus, A. retroflexus, Chenopodium album, Convolvulus arvensis, Lactuca tatarica, Medicago falcata, Setaria viridis in some types of vegetation (meadows and agrophytocenoses) had a high occurrence rate from 50 to 93 %.