小根山国有林落葉広葉樹林土壤の化学的性質並びに腐植形態に関する研究

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This study was designed to get some information on the chemical properties and the humus forms of the deciduous forest soils. Another object of this study was to throw light on the differences of the above soil properties produced by different forest types under the same site conditions.The rapid decomposition of leaf litter in both forests were confirmed by field observation and chemical analyses. The high pH values for Japanese forest soils, low acidities, narrow C-N ratios and high percentages of replaceable calcium to base enchange capacity of the both forests showed that they were fertile and highly productive.The decomposition of leaf litter seemed to be better in the mixed forest of C. crenata and Q. serrata (2) than the pure forest of Z. serrata (1), but the pH value of (1) was higher than (2). The same horizon of (1) showed higher pH value and lower acidity than (2), but the differences were not remarkable. The percentage of replaceable calcium to base exchangeable capacity of (1) was greater than (2) in A_1 horizon. The differences of another chemical properties were not remarkable between the two forests.The humus forms of these forests showed the same tendency and the differences was not remarkable. F layers showed low humification and stability against oxidation. In A horizons, their humus substances were conbined with calcium and magnesium, and they showed relativiely high humification but low stability against oxidation.
一般社団法人日本森林学会の論文
1954-11-25

小根山国有林落葉広葉樹林土壤の化学的性質並びに腐植形態に関する研究

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