THE OVERGROWING OF RAIL-WAY EMBANKMENT IN THE "BOLSHAYA KOKSHAGA" RESERVE
The research on the overgrowing of the rail-way embankment on the territory of the «Bolshaya Kokshaga» reserve was performed in three sections. Three associations: Calamagrostis epigeios-Festuca rubra, Luzula pilosa-Salix and Fragaria vesca+Stellaria holostea were studied. Species structure is represented by 51, 34 and 47 species correspondingly. All the habitats are different in floristic composition: Jacuard's index of similarity varies from 30 to 39%. The associations do not differ in the correlation of plants' vital forms according to C. Raunkiaer and I.G. Serebryakov and also in the correlation of ecologo-coenotic groups. Among vital forms, according to C. Raunkiaer hemicryptophytes (61.6%), and according to I.G. Serebryakov - long-rhizomed (17.9%), arboreous (16.7%), and scape-rooted (14.1%) plants are predominant. Meadow group (41.6%), and also PineForest (20.0%) and nemoral (20.8%) groups are predominant among ecologo-coenotic groups.