Оценка биоиндикационных свойств бетулина и суберина в бересте березы повислой

Content of extraneous substance s of betulin and suberin in birchbark of weeping birch (Betula pendula) growing in different environments is studied. A gradual rise of betulin and suberin content in the birchbark of Betula pendula at the increase of intensity of industrial pollution is revealed. Mathematic model describing the laws of betulin and suberin content change in the plantation trees of industrial and residential town areas of Yoshkar-Ola and forest parks of Mari El depending on the diameter of the tree is suggested.