STUDIES ON THE HUMUS FORMS OF FOREST SOILS : III. Elementary Composition of Fractionated Horizons of Forest Soils

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概要

• 論文の詳細を見る

• The results of elementary analysis of each fraction separated physically from each horizon of five forest soils were described. The biggest fraction was Lf_1 (fresh litter) in L layers, Ff_1 (>2 mm) or Ff_2 (2-1 mm) is F layers and Hf_6 in H layers. Of all the changes in various parameters which accompanied decomposition and humification, the change in C/N ratio was the most obvious; the C/N ratio for plant remains easily decreased to 25 or 30 during decomposition, but any further decrease in this value occurred with difficulty. It was specifically pointed out that Hf_7 and Hf_8 were fairly different materials from the other fractions. As for A horizons, both carbon and nitrogen contents increased, and C/N ratios decreased in the order of sand, silt and clay fractions.

• 社団法人日本土壌肥料学会の論文

著者

• Ohta Seiichi

  Faculty Of Agriculture Nagoya University

• KUMADA Kyoichi

  Faculty of Agriculture, Nagoya University

• Kumada Kyoichi

  Faculty Of Agriculture And Water Research Institute Nagoya University

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