Distribution of Chrysotalunin, a Major Soil Anthraquinone Pigment, in Various Surface Soils of Japan

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The contents of chrysotalunin (CLN) in Japanese surface soils were first measured by isolative determination using high performance liquid chromatography (HPLC). These soil samples (N=67) which consist of red soils, yellow soils, dry podzolic soils, brown forest soils, black soils and immature soils, were taken from various locations in Japan extending from the southern subtropical to the northern subarctic regions. All the soil samples (N=67) gave CLN contents ranging from 0.1 to 29.1 ppm. The average CLN content of the black soils which was 10.2 (±1.4, S. E.) ppm (N=36), was about two times as high as that of the brown forest soils (4.8±1.2 ppm, N=19). A significant difference was found in the CLN contents among black soils, brown forest soils and the soils belonging to other types (p<0.05). Although no relationship between the CLN contents and soil properties (cf. soil pH, organic carbon contents, Fe and Al contents, etc.) was observed, an obvious difference in the frequency distributions of log-transformed CLN contents was detected among the soil groups under different land uses, for example grasslands with bamboo grass (Sasa sp. or Neosasamorpha sp.) and/or eulalia (Miscanthus sinensis) (19.02.6 ppm, N=10), forests with bamboo grass and/or eulalia (9.91.4 ppm, N=15), paddy fields (1.80.1 ppm, N=5), etc.
社団法人日本土壌肥料学会の論文