The relevance. The steady growth in the world of geochemical and ecological studies of mercury in local-regional-planetary plans is associated with the active circulation and omnipresence of its various forms in terrestrial and aquatic environments of bisophere, as well as with its supertoxicity and high biodestructivity. The relevance of this study determines the use of modern tools for highly sensitive analysis in the biogeochemical study of different types of components of the plant-bedding-soil system at three landfills of protected mining areas in the south of the Far East. 
The main aim of the research is to establish mercury content in the vegetation and soils of Primorsky Krai. 
Objects: soils, vegetation fallout, forest litter, plants of Primorsky Krai. 
Methods. Content of the mass fraction of total mercury was determined in International Research Centre «Uranium geology» (TPU) without preliminary chemical decomposition of samples by flame-free atomic absorption spectrometry. Mercury analyzer RA-915+ with pyrolytic prefix RP-91C (Lumex LLC, St. Petersburg) was used. 
Results. The obtained results characterize the mercury content of adjacent soils, vegetation fallout and vegetation in a combination of three naturally separate sections of the Sikhote-Alin ridge, which are located within the protected, potentially geochemical «primary» natural territories of the Primorsky Krai. The average mercury content for soils in the vicinity of the Vanchin-Ugolny stream, Shandui lakes and the tributary of the Bikin river was, respectively (mg/kg): 0,162 (range 0,046–0,298), 0,098 (range 0,015–0,264) and 0,117 (range 0,021–0,28). Differences in mercury content in the soils of the studied areas depend on the amount of organogenic component and landscape characteristics of the area. Mercury content in different types of vegetation was: lichen (0,135 mg/kg), fern (0,0383 mg/kg), labaznik (0,023 mg/kg), sedge (0,016 mg/kg), which is explained by the different ability of plants to physiologically and biologically fix water-soluble forms of mercury. Higher mercury content in soils compared to plant litter and vegetation itself is the evidence of long-term accumulation of reserves of this metal and binding of its main mass in organomineral form in soils.