title: Broad-leaved forests in the North-Western Caucasus. I. Order Carpinetalia betuli P. Fukarek 1968
abstract: Braun-Blanquet classification of the piedmont and mountain broad-leaved forests (formed by Carpinus betulus, Quercus petraea/hartwissiana/robur, Fraxinus excelsior) was done basing on 224 relevés collected in 2014–2018 in the North-Western Caucasus (N 43,5–44,8°, E 38,5–41,5°; Fig. 2). DCA-ordination of the data corresponds to their correlation with environment variables (absolute elevation, geographical coordinates, tree canopy density) in Landolt’s ecological scales was carried out. Suballianc
journal: Vegetation of Russia