Nihonkai montane deciduous forests
Nihonkai montane deciduous forests
The Nihonkai montane deciduous forests cover the Sea of Japan (Nihonkai) facing mountain slopes of Honshu, Japan's largest island, stretching some 800 kilometres up its western side from Wakasa Bay, and reach the forested lowland hills at the southern tip of Hokkaido. Deciduous broadleaf woodland dominates, built around Japanese beech (Fagus crenata) alongside katsura, Japanese hornbeam, maple, and lower-elevation oaks such as Mongolian and jolcham oak, with a dense understorey of dwarf bamboo. The climate is strongly seasonal and temperate, with summer highs near 30 degrees Celsius and cold, snowy winters whose daily averages fall to around 3 degrees Celsius. Protected areas blanket nearly a third of the ecoregion, and the UNESCO World Heritage Site of Shirakami-Sanchi safeguards some of East Asia's largest remaining virgin beech forests, home to Japanese serow, Japanese macaque, and Asiatic black bear. For gardeners, several signature ornamentals are native here, including Japanese cherry (Prunus), celebrated in the hanami flower-viewing tradition, as well as maples and the beeches themselves.
RESOLVE 671
Palearctic
31,789 sq mi
Temperate Broadleaf & Mixed Forests
Landscape type
Temperate Broadleaf & Mixed Forests
Plant region
Palearctic
Region footprint
31,789 sq mi
Habitat pressure
Nature Could Reach Half Protected (Dinerstein NNH 2)
Source & care
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Use this as the broad planting pattern for the region: Four-season forests of deciduous hardwoods - oak, maple, beech - often mixed with conifers, shaped by warm summers and cold winters. Trees leaf out in spring and color in autumn; the generally fertile soils have made these forests heavily settled and farmed. For garden decisions, pair that context with the plant list below, then narrow by your site's light, water, soil, and mature-size constraints.
Plants that can handle this region
A climate-fit shortlist from Plotwright's catalog. Start with the reliable fits, then use each plant page to check light, water, soil, mature size, and local availability.
Showing 568 of 568 climate-fit plants for this region.
Planting collections
Finished planting recipes where every member can handle this region's climate range. The fit badge uses the collection's most sensitive plant, so a resilient collection is a safer starting point than any single standout.
Starter kits for this region
Generated from catalog plants that already pass this region's climate fit gate, with native matches sorted first when the catalog has enough coverage.
Sunny pollinator border
A sunny, wildlife-forward planting assembled from plants that pass this region fit gate.
Native fit: 0/6
Climate resilient: 6/6
Wildlife links: 15
Host/specialist links: 4
Forage/pollination links: 16
Shelter links: 1
Shade-edge planting
A softer edge kit for woodland margins, porches, and mixed-light garden edges.
Native fit: 0/6
Climate resilient: 6/6
Wildlife links: 14
Host/specialist links: 4
Forage/pollination links: 16
Shelter links: 1
Resilient shrub layer
A woody structure layer led by plants that fit both current and projected regional conditions.
Native fit: 0/6
Climate resilient: 6/6
Wildlife links: 13
Host/specialist links: 4
Forage/pollination links: 17
Shelter links: 1
Similar planting regions
Browse other regions in the same biome. Their plant lists can suggest species and combinations worth comparing.
Where this ecoregion reaches
The countries, US states, and Canadian provinces this ecoregion touches, from a spatial join of its RESOLVE polygon against Natural Earth boundaries.
Countries
Educator packet
Region packet
Nihonkai montane deciduous forests educator packet
The Nihonkai montane deciduous forests cover the Sea of Japan (Nihonkai) facing mountain slopes of Honshu, Japan's largest island, stretching some 800 kilometres up its western side from Wakasa Bay, and reach the forested lowland hills at the southern tip of Hokkaido. Deciduous broadleaf woodland dominates, built around Japanese beech (Fagus crenata) alongside katsura, Japanese hornbeam, maple, and lower-elevation oaks such as Mongolian and jolcham oak, with a dense understorey of dwarf bamboo. The climate is strongly seasonal and temperate, with summer highs near 30 degrees Celsius and cold, snowy winters whose daily averages fall to around 3 degrees Celsius. Protected areas blanket nearly a third of the ecoregion, and the UNESCO World Heritage Site of Shirakami-Sanchi safeguards some of East Asia's largest remaining virgin beech forests, home to Japanese serow, Japanese macaque, and Asiatic black bear. For gardeners, several signature ornamentals are native here, including Japanese cherry (Prunus), celebrated in the hanami flower-viewing tradition, as well as maples and the beeches themselves.
Realm
Palearctic
Dominant biome
Temperate Broadleaf & Mixed Forests
Approximate area
31,789 square miles
States / provinces
Not recorded
Climate descriptor
Not recorded
Classroom prompts
- Which climate and biome facts explain why this region supports its characteristic plants?
- How do native-plant and wildlife-support claims differ from a species-presence claim?
- Which source-backed facts would you cite before using this region in a classroom map activity?
Use the Sources & citations section below for page citation styles and region source links.
Sources & citations
Cite this page
For lesson plans, articles, or regional planting notes that use this Plotwright page. To cite the underlying ecoregion framework or a specific editorial profile, use the source cards below.
Plotwright. (n.d.). Nihonkai montane deciduous forests (Nihonkai montane deciduous forests). Retrieved 2026, August 20, from https://plotwright.com/regions/resolve-671
Sources for this region
This page cites Plotwright first for the compiled view, then lists the upstream framework, climate, and editorial source pages so readers can cite the original material directly.
RESOLVE 2017 Terrestrial Ecoregions (Dinerstein et al.)
Primary ecoregion framework











































