Estimation of black earth fermentation activity of natural biocoenosis of steppe zone and forest-steppe zone of Central Caucasus

Fermentation activity (invertase, catalase, phosphatase) of blask soils of steppe zone and forest-steppe zone of Tersloy variant zone in Kabardino-Balkariyas is certain. The studied black earth show average fermentation activity. The integrated changes of enzymes activity among themselves with the maintenance of humus and moisture-retentive humidity are revealed.