THE STANDARDIZATION OF VEGETATION OF LIMESTONE OUTCROPS IN THE DRAINAGE BASIN OF THE INGULETS RIVER (UKRAINE)

The classification of petrophyte vegetation currently is based on Braun-Blanquet approach, but it is not practically elaborated for vegetation aggregations of limestones in the plain part of Ukraine. For standardization of phytocoenostructures of heliophyte-xerophyte series in the limestone outcrops in the Black Sea part of the drainage basin of Ingulets river, we propose to use “the principle of community complexity”. We distinguished 2 subtypes and 6 groups of phytocoenostructures.