DCA-ordination of the resulted vegetation units. Numbers in the centroids correspond to the unit number in the text. Environmental verctors of DES: Hd – moisture, fH – variability of damping, Rc – soil acidity, Sl – salt regime of a soil, Ca – carbonate content in a soil, Nt – nitrogen content in a soil, Ae – soil aeration, Tm – thermal regime, Om – humidity of climate (ombroregime), Kn – continentality of climate, Cr – cryoregime, Lc – light. Eigenvalues: 1st axis (DCA1) 0.6533, 2nd axis (DCA2) 0.2723.