Seasonal dynamics of biological productivity the main associations of the steppes of West Kazakhstan

The work presents the results of author's own research on study seasonal dynamics biological productivity main associations complex steppes Western Kazakhstan. In various ecological and microclimatic conditions, accumulation above-ground underground phytomass during season is considered, as well production destruction processes in plant communities are analyzed. Based research, recommendations were developed for preservation steppe ecosystems rational use pasture lands growing season, including years with different hydrothermal regimes. vegetation, combination climatic factors, has ensured fertility soils zone centuries, which granary agriculture animal husbandry. Practically frontal plowing Kazakhstan, more than 70%, contributed to transformation vegetation large areas.