Biogeochemical studies of plants from stream banks in Northern Sweden

摘要: Abstract This paper presents a study of the geochemistry organic matter occurring along stream banks. It was designed to assess relationship between element concentrations in different types vegetation (living and dead) root systems aerial parts plants. The variation eight heavy metals, typical for selected mineralization (Cu, Pb, Zn, Co, Ni, Cr, Mo, U) expressed as limonite (Fe2O3, MnO), is described. results show that metal roots mosses are, general, correlated with those bank material, indicating physiological barriers growth media are lacking. However, trace-element plant organs general less well medium at higher concentrations. degrees correlation vary considerably species element, presence organs. barrier effect seems be lacking which has high all investigated species. also been shown both respond closely chemical variations background levels related bedrock units. All showed seasonal annual For sedges Carex juncella, rostrata this content turn function precipitation. should therefore normalized against content. Plant have certain advantages over material former sample smaller. Of organs, none appeared useful multi-element geochemical surveys. Aerial two display gradual decrease contents during season. main conclusion aquatic give patterns reflect mineralizations. They suitable mapping ore prospecting.