Heavy metals in soil, deposition, soil water and pine needles in a Scots pine forest at Svanhovd, Norway

Theme 1. Environmental protection
Session Name 1.10 Biogeochemical cycles in Arctic forests
Datetime Sep 07, 2018 02:22 PM - 02:37 PM (UTC +3)
Location Room 14
Presentation Type Oral
Presenter Nicholas Clarke
Author(s) Nicholas Clarke (Norwegian Institute of Bioeconomy Research, Norway), Volkmar Timmermann (Norwegian Institute of Bioeconomy Research, Norway), Kjell Andreassen (Norwegian Institute of Bioeconomy Research, Norway), Jørn-Frode Nordbakken (Norwegian Institute of Bioeconomy Research, Norway)
Abstract text

Forests along the Norwegian-Russian border are affected by emission sources on the Kola Peninsula. We studied effects of these emissions on concentrations of heavy metals in deposition, the soil organic layer, soil solution at 5, 15 and 40 cm depth and pine needles at an ICP Forests Level II site in Scots pine (Pinus sylvestris L.) forest close to the emission sources from 1987 to 2003 at Svanhovd (69.5° N and 30° E). The site was stocked by 845 stems/ha, a tree volume of 122 m3/ha, a mean tree height of 13 m and a mean tree age of 90 years in 2004. Five percent of the trees were birch (Betula pubescens), and the annual tree growth was 3 m3/ha. Heavy metal deposition varied greatly, likely depending on wind direction, and with no clear trend. No clear trend was visible in soil solution either. Soil acidification has been counteracted by the presence of weakly basic underlying sediments, but there were high concentrations of heavy metals in the soil organic layer. High concentrations of nickel and copper were measured in pine needles during the period 1995–2003.

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