Floristic structure and structure of pine forests of water safety zone at cheboksary water basin in the territory of Mari El Republic

Studied pine cenosis in water safety zone of Cheboksary water basin in the territory of Mari El Republic are carried to two groups of forest types: Pineta sylvestris fruticuloso-hylocomiosa and Pineta sylvestris hylocomioso-cladinosa which differ from each other by specific structure, dominants and a projective covering of grass-fruticulose layer. Data about vertical structure and phytodiversity of the studied communities are cited.