Ecological and genetic classification and analysis of pasture modifications of steppe-meadows in the oka river floodplain

摘要

Ecological and genetic classification of pasture modifications includes: their distribution according to ecological meadow types and determination of pasture syntaxa within each ecological type according to the stages of pasture degradation (PD). The analysis of PD genetic series for each of the six types of shortfloodplain steppe meadows is given. The efficient PD stages (based on the component palatability), and the stability thresholds to grazing of initial (without grazing) specific phytocoenotic composition are revealed.