ABSORPTION AND ACCUMULATION OF IRON, MANGANESE AND COPPER IN PLANTS IN THE TEMPERATE FOREST OF CENTRAL JAPAN

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Plants (60 species in 37 genera, 27 families) grown on granite weathered soils of temperate natural forest in central Japan were sampled and analyzed for Fe, Mn and Cu. Soil samples collected from the site of plant stands were also analyzed. Results showed that considerable difference exisited among plant species with less variations among plant samples of the same plant species. Similar responses were frequently found among plant species in the same genus and sometimes in the same family. Variations due to soil also occurred but to a lesser degree. Fe, Mn and Cu were generally low in coniferous trees. On the other hand Acanthopanax sciadophylloides accumulated higher amount of Mn in the leaves (4.6×10^3 ppm, dry matter basis) which is about 180 times more than that of low content species. Other Mn accumulating species were found in Anacardiaceae and Aceraceae. Cryptomeria japonica was the lowest in Mn content (26 ppm). Mean concentration ratio for Mn was 113. Cu was found to be slightly rich in scattering species including Lastrea japonica, Magnolia salicifolia, Acer mono var. connivens and Callicarpa japonica. Mean concentration ratio for Cu was 17.
社団法人日本土壌肥料学会の論文