Etorofu/Iturup Island | 択捉島 ーー Kunashiri Island | 国後島
^{(亜)極地気候帯 | ツンドラ / Tundra | (Sub-)polar climate zone | (sub-)polaren Klimazone}

Hokkaidō | 北海道
^{北方針葉樹林 | タイガ / Taiga | Boreal Coniferous Forest | Borealer Nadelwald = in the northern regions of Hokkaidō
夏緑広葉樹林帯 | Summer-Green broad-leaved Forest Region | Sommergrüner Mischwald = in the southern regions of Hokkaidō}

Honshū | 本州
^{常緑広葉樹林帯 | Evergreen broad-leaved Forest Region | Immergrüne Laubwälder = in the central regions of Honshū
熱帯および亜熱帯の湿った広葉樹林 | Tropical and Subtropical moist broadleaf Forests | Tropische und Subtropische feuchte Laubwälder = in the southern regions of Honshū}

Kyūshū | 九州
^{常緑広葉樹林帯 | Evergreen broad-leaved Forest Region | Immergrüne Laubwälder = in the northern regions of Kyūshū
熱帯および亜熱帯の湿った広葉樹林 | Tropical and Subtropical moist broadleaf Forests | Tropische und Subtropische feuchte Laubwälder = in the southern Regions of Kyūshū}

Izu-Islands | 伊豆諸島 ーー Ryūkyū-Islands | 琉球諸島 ーー Volcanic Islands | 火山列島
^{熱帯および亜熱帯の湿った広葉樹林 | Tropical and Subtropical moist broadleaf Forests | Tropische und Subtropische feuchte Laubwälder}