Abstract
Scots pine (Pinus sylvestris L.) bark was tested as a material for long-term analysis of forest growth changes. Material representing about 20 yr before 1912 as well as the 20 yr before 1980 detached from trees grown in the same area was analyzed by the PIXE method. The concentrations of ten elements (Si, S, Cl, K, Ca, Mn, Fe, Ni, Cu, and Zn) were determined. No clear long-term trends were seen in ‘old’ bark samples (before 1912), while in ‘new’ samples (before 1980) increasing trends were detected for Ca and Fe. Pine bark seems to be a promising source of data for a time series analysis, also because it is inert after its formation, readily available in coniferous forests and easy to handle as a sample material.
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Raunemaa, T., Hart, P., Kukkonen, J. et al. Analysis of the bark of scots pine as a method of studying environmental changes. Water Air Soil Pollut 32, 445–453 (1987). https://doi.org/10.1007/BF00225128
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DOI: https://doi.org/10.1007/BF00225128