The influence of motor transport on phytotoxicity of snow cover of Krasnoyarsk vicinities

The purpose of the study was the determination of toxicity of the samples of the snow taken at dif-ferent distance from a roadbed of the route M-53 (the vicinity of Krasnoyarsk), a phytotesting meth-od. The researches were conducted in 2014-2015. The sampling of the snow was carried out during the maximum accumulation of moisture content in the snow till the period of intensive snowmelt - on March, 10-12. The tests were selected by means of the weight snow gage at different distances from a roadbed (in 10, 20, 30, 40, 50 and 100 m). The Monitoring of the intensity of traffic on the route M-53 showed its high load within a year (more than 37 thousand cars per day). In an hour from the cars passing on a highway 92.1-170 g of carbon mon-oxide, 16-29.4 g of hydrocarbons, 12.7-22.9 of dioxide of nitrogen come to the atmosphere. The greatest oppression of plants activity was observed when using for growing of seeds the samples of the snow taken in 10 m from a road edge. So, the en-ergy of germination and viability of seeds of barley decreased on 37.5 and 38.2 abs. % in comparison with control group with the seeds couched in the distilled water. Even more significant inhibition of vital processes was observed at garden cress seeds (the energy of germination decreased by 40.5 %, and the viability - for 42.8 %, p