Summary: It is explored the peculiarities of influence environmental conditions (temperature vegetation, spring frosts, the accumulation amount of active temperatures) on the growth and development of leguminous perennial grasses (phases’ beginning  and biting ripeness) of the second and next years of vegetation.

Key words: bean grasses, environmental conditions, growth and development.

Summary: The article considers the dynamics of the level of air pollution in Krasnoyarsk 25 years. Analysis of the received information indicates a decrease in the level of contamination, since 1992, 8 times. Installed substances that make the greatest contribution to environmental pollution (50% of nitrogen dioxide, 25% - fluoride), have a significant technological impact on the natural complex of the city and causing a modification of its biotic components.

Keywords: man-made impacts, the maximum allowable concentration, urban environment, green spaces.