Dynamics of aboveground phytomass in the communities of the Ob River forest-steppe and Northern Kulunda during protective regime

The formation of the herbage plant communities depends on natural and climatic features area modes their economic use. In 2013-2021, comparison dynamics aboveground phytomass in steppe meadow Western Siberia at an absolute protective regime was carried out. state vegetation studied territory Novosibirsk region example two (the right-bank part Ob River forest-steppe) solonetzic northern Kulunda steppe). cover described according to standard geobotanical techniques. It is shown that communities, along with weather conditions, considerable impact condition significantly affected by excessive accumulation litter, which reaches up 57-77 % total phytomass. This leads decrease density mass green shoots, while overgrowth weed species often observed. meteorological conditions separate years have main steppes. Both dry highly humid years, participation grasses decreases role salt-tolerant forbs, as well sagebrushs especially Halimione verrucifera, increases.