EFFECT OF AEROTECHNOGENIC CONTAMINATION ON THE URBAN PLANTING INFESTATION WITH ROTTING OF STEM AND ROOT
The studies have shown that in an urban city environment near highways infestation of pine with rotting of stem and root rots was significantly higher than that at a distance of 500 to 800 meters from the highway (respectively, 67 and 33%). Near the road was well above the wood square by rotting of stem. In Forest Park «Nizhneisetsky» rotting of stem of pine, almost absent, (found only one quarter sporadically). The infestation of pine root rot ranged from 0 to 30%. A number of pine planting in the city had a low level of infestation rotting of stem and root rots. This is probably due to a lower average age of pine and appreciable distance from the highway, but also the presence of buildings and woody plants, are partially reduced level of migration aerotechnogenic emission vehicles. The main factors reducing the Pinus sylvestris sustainability to rotting of stem and root in an urban environment is not so much soil contamination with heavy metals (with an insignificant level of pollution), but the level of air environment aerotechnogenic contamination by formaldehyde, nitrogen oxides, sulfur and other substances.