Valuable forest territories of Petrozavodsk municipal district

The value of plant associations, which is based on 182 geobotanical descriptions of natural forest associations was estimated in Petrozavodsk municipal district using the methods of GIS-technology and component analysis. 3 types of associations were defined: minimally, moderately and strongly disturbed ones. It was shown that the contribution of the remaining intact plant associations into the plant covering of Petrozavodsk is from 5 to 13 %. It is suggested using these data for the planning of urban area development and for the ecological framework of the city.