Особенности распределения микроэлементов в хвое ели обыкновенной в условиях придорожной зоны

The peculiarities of seasonal and age dynamics of microelements content in the needles of undergrowth plants of different age and common spruce trees growing in the roadside shelter belt have been studied. The data obtained have been compared with the metals content in the soil and tree needles of the basic territories of the Mari-El Republic.