Studying of geochemical situation is one of the key moments of an overall picture of ecological stability of a landscape. The purpose of the study is investigating the background of geochemical indi-cators of typical tundra landscapes in the Yenisey Siberia as a part of the geosystem approach for the issue of studying the environmental potential of the area. The results of the field, chemical-analytical and office studies of ambient geochemical back-ground within the reviewed area of petroliferous site are summarized. The work tasks were field studies with collection of samples from different geosystem media, chemical and analytical studies of the spec-imens received, desktop processing and interpreta-tion of data. Field, laboratory and cameral works were carried out within background monitoring of environment on the Baikal field, Baikal, Sandy, Irkinsky, Muksunikhsky, Priozyorny, oil and gas license sites. The results of field, chemical analysis and cameral works on studying of geochemical background of environment within the studied terri-tory of oil-and-gas sites are presented. The local background on a soil cover, vegetation and water was established. The coefficient of biological ab-sorption and coefficient of migration of elements in system ‘the soil - ground deposits’ was defined. Some features of spatial formation of geochemical anomalies in environment were considered. The received results will be included into the general cycle of researches on an assessment of ecological potential of typical tundra landscapes of the Yenisey Siberia.