THE SYNTAXONOMY OF SUBTAIGA WATERSHED TRUE MEADOWS FROM WEST SIBERIAN PLANE
M.P. Tishchenko
Central Siberian Botanical Garden, SB RAS, 630090, Novosibirsk, Zolotodolinskaya str., 101 tishenko-1957@mail.ru
Keywords: subtaiga, watershed true meadows, classifi cation of vegetation
Abstract
Classifi cation of watershed meadow communities of Arrhenatheretalia order occurring on Tobol-Irtish and Ob-
Irtish watersheds (subtaiga subzone) was made according to the Braun-Blanquet approach. 3 associations and 4
subassociations of alliance Festucion pratensis were described. In this area meadow communities on abandoned
arable lands predominate. Meadow communities on zonal soils belong to the association Cirsio setosi-Phleetum
pratensis. It is represented with 3 subassociations. In the western part of studied area (Tobol-Irtish watershed) on
sandy weakly-acidic soils meadow communities of Loto corniculati-Agrostietum tenuis dianthetosum deltoidis
subassociation with Agrostis tenuis as dominate are common. Th e meadows of Aegopodio podagrariae-Phleetum
pratensis association occur in the eastern part of studied area (Vasyugan plane of Ob-Irtish watershed). Th ey are
situated in small depressions and at forest edges. Under anthropogenic pressure (haying) they replace forest meadow
(Geranio bifolii-Brachypodietum pinnati) association.
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