Особенности формирования химического состава годичного прироста в елово-пихтовых фитоценозах Республики Марий Эл

The quantitative evaluation of annual increment of organic mass in fir forests of Mari-EL Republic has been carried out. The peculiarities of macro and microelements accumulation in the annual organic mass increment are considered. A number of indices connected with common biological cycle of macroand microelements are presented in the article.