Well drained meadows on left bank of Ob river (Tomsk region)

Abstract

Classification of well drained meadow communities occurring on the left-bank part of the Ob River, Tomsk region (southern boreal and hemiboreal subzones) is made according to the Braun-Blanquet approach. Polydominant grass meadows predominate on this territory (alliance Festucion pratensis, class Molinio-Arrhenatheretea). Steppe meadows are found in the southern part of the region. The overgrazing variants of plant communities belong to the association Trifolio pratensis—Festucetum valesiacae (alliance Trifolion montani). The Alliance Festucion valesiacae (class Festuco-Brometea) includes extrazonal steppe meadows on the southern slopes of ravines. The Class Mulgedio-Aconitetea represents the tall-forbs communities which are rare in the forest zone.