The Chemical Composition of Soils of the Baikal'skii Biosphere Reserve as Related to the Degradation of Fir Forests

摘要

The brown mountain forest and soddy alluvial soils of Baikal'skii Biosphere Reserve were found to resemble the soils of the eastern and western Baikal lakesides by their content of the most important microelements. The mean total concentrations of themajority of heavy metals in the soils are at the elarke level with the exception of Zn and Cu. The content of mobile microelement compounds is characterized by their accumulation in the upper soil horizons and does not exceed 20% of their total content.The exceptions are Cd, Mn, and Zn, with the percentage of mobile compounds constituting 70 and 45% of their total content. No technogenic accumulation of heavy metals that might induce the degradation of the fir forests of the reserve was found in the studied soils.