Background parameters of ecological and geochemical condition of waters of oligotrophic bogs in the taiga zone in the Russian Federation

Relevance. Definition of background physical, chemical and geochemical parameters of bog waters is a necessary stage in determining allowable anthropogenous loading on bogs, including allowable dumps of polluting substances. However, until recently similar data were absent that determines the relevance of this research. The aim of the research is to define the background parameters of ecological and geochemical condition of bog waters in taiga zone. Methods: landscape-geochemical and statistical methods, methods of determining chemical composition of bog waters. Results and conclusions. The authors have analyzed the data on chemical composition of oligotrophic bogs of taiga zone in the territory of the Russian Federation by the example of three typical and the most studied bogs - Lammine-Suo (Leningrad region, middle taiga subzone), Ilaskoye (Arkhangelsk region, northern taiga subzone) and Vasyuganskoye (east site, Tomsk region, southern taiga subzone). The characteristic parameters of condition of the researched bog waters (рН, the sum of the main ions, dichromate oxidability, concentration of phosphates, NH 4 + , Cl- , Fe, Al, Cu, Zn) were chosen and background values were determined. Considering these data, the background values of priority physical, chemical and geochemical parameters of oligotrophic bog waters were established on territories of the Russian Federation for normalization of anthropogenous influence on bogs. The background values in some cases are essentially higher than the established maximum permissible concentrations in water bodies for economic and drinking assignment and fish economy. Considering this fact, higher actual values and even rather appreciable fluctuations of these parameters may be the attribute of anthropogenous change of bog ecological system condition.