DISTRIBUTION OF ZINC AND CADMIUM IN THE TEMPERATE FOREST TAXA OF CENTRAL JAPAN

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概要

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• The Zn and Cd contents of leaves belonging to 60 plant species of 37 genera and 27 families growing in the natural forest of central Japan were analyzed by atomic absorption spectrophotometry.Associated soils were also analyzed.The results showed considerable variations among the plant species but no great differences were observed among samples from the same plant species growing at 9 different sites.A very high Zn content(732 ppm, D.W.basis)was detected in the leaves of Ilex crenata : this was 94 times greater than the low Zn content of the plant species Tsuga Sieboldii.The Zn concentration ratio(content in plant/content in A horizon soil)for Ilex crenata was found to be 177.All plant species examined in the genera Ilex, Clethra, and Viburnum were rich in zinc. The genera rich in Zn were also found to have high contents of Cd.The value for Ilex crenata(5.4 ppm, D.W.basis)was followed by those of Clethra barbinervis(2 ppm, D.W.basis), Viburnum erosum(2 ppm, D.W.basis)and Ilex macropoda(1.6 ppm, D.W.basis).The concentration ratios(content in plant/content in A horizon soil)for these species were 258,96,94,and 76,respectively. A highly significant positive correlation coefficient(r=0.96)was calculated for the Zn and Cd concentrations in the plant leaves.Similar distribution patterns of Zn and Cd in the leaves of different plant species suggested that some common absorption mechanism may exist for both elements in the plants.

• 社団法人日本土壌肥料学会の論文

著者

• Memon Abdul

  Faculty Of Agriculture Nagoya University

• Ito Seigo

  Faculty Of Agriculture Nagoya University

• YATAZAWA Michihiko

  Faculty of Agriculture, Nagoya University

• Yatazawa Michihiko

  Faculty Of Agriculture Nagoya University

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