Basal zone
Altitudes
less than 500 m
Climates
Subarctic (east Hokkaido)
Cool-temperate (west Hokkaido, north Honshu)
Warm-temperate (south Honshu)
Subtropical (Nansei islands)
Overview
Low lands such as plain.
Flora
- Subarctic evergreen coniferous forests (east Hokkaido)
 - Cool-temperate deciduous broad-leaved forests (Japan sea type) (west Hokkaido, north Honshu)
 - Cool-temperate deciduous broad-leaved forests (Pacific ocean type) (north Honshu)
 - Warm-temperate evergreen broad-leaved forests (south Honshu)
 - Warm-temperate deciduous broad-leaved forests (south Honshu)
 - Subtropical evergreen broad-leaved forests (Nansei islands)
 
Climate (Lateral)
- Tropical
 - Subtropical
 - Warm-temperate
 - Intermediate-temperate
 - Cool-temperate
 - Boundary of cool-temperate and subarctic
 - Subarctic
 - Polar