CHARACTERIZATION OF RED AND/OR YELLOW COLORED SOIL MATERIALS IN THE SOUTHWESTERN PART OF JAPAN IN TERMS OF LITHOLOGY AND DEGREE OF WEATHERING
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概要
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Based on chemical and mechanical compositions and quartz content of red and/or yellow colored soil materials in the southwestern part of Japan, lithology index 'LI) and weathering index (WI) were derived using a multivariate statistical method (factor analysis). The variables used for factor analysis are Fe_2O_3/Al_2O_3, TiO_2/Al_2O_3, Fe_2O_3+Al_2O_3+Quartz, Si(non-quartz)/(Fe_2O_3+Al_2O_3), CaO+MgO+K_2O, MgO/K_2O, and Quartz/Sand, all of which represent certain different aspects of weathering and/or lithological characteristics. Since LI and WI are mutually independent, it is possible to evaluate the effect of the degree of weathering on the characteristics of red and/or yellow colored soil materials independently from that of lithology.
- 社団法人日本土壌肥料学会の論文
著者
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Kyuma Kazutake
Faculty Of Agriculture Kyoto University
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Araki Shigeru
Faculty Of Agriculture And The Center For African Area Studies Kyoto University
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Kyuma Kazutake
Faculty Of Agriculture Kinki University
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