Department of Forest Site Environment
Forestry and Forest Products Research Institute
Soil profiles in the research sites.
      Soil profiles in Japanese forests. (Soil type and prefecture in parenthesis)
       Classification of Forest Soil in Japan (pdf file 1Mb)

[Podozolic soil group]
dry podozolic soil wet iron podozolic soil wet iron podozolic soil
Dry podozolic soil (Nagano)

 Wet iron podozolic soil (Niigata)

 Wet iron podozolic soil (Akita)
[Brown forest soil group]
dry brown forest soil (Ibaraki) moderately moist brown forest soil (Hyogo) moderately moist yellowish brown forest soil (Fukuoka)
Dry brown forest soil (Ibaraki)

 Moderately moist brown forest soil (Hyogo)

 Moderately moist yellowish brown forest soil (Fukuoka)
Moderately moist dark brown forest soil (Gunma)

Moderately moist dark brown forest soil (Gunma)

[Red and yellow soil group]
Strongly bleached red and yellow soil (Okinawa) Red soil (Kagawa Moderately moist yellow soil (Okinawa)
Strongly bleached red and yellow soil (Okinawa)

 Red soil (Kagawa)

 Moderately moist yellow soil (Okinawa)
[Black soil group]
Moderately moist black soil (Iwate) Moderately moist black soil (Gunma) Moderately moist black soil (Kanagawa)
Moderately moist black soil (Iwate)

 Moderately moist black soil (Gunma)

 Moderately moist black soil (Kanagawa)
[Dark red soil group]
Dark red soil (Kyoto)

Dark red soil (Kyoto)

[Immature soil group]
Immature soil; volcanic ash deposit Immature soil; pumice deposit Eroded soil β type (Gunma)
Immature soil; volcanic ash deposit,Mt.Unzen eruption in 1991 (Nagasaki) Immature soil; pumice deposit from Mt.Tarumae's eruption in 1667 (Hokkaido) Eroded soil β type (Gunma)

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