| Nihonkai evergreen forests | |
|---|---|
 Mt. Sanbe, near Oda | |
 Ecoregion territory (in purple) | |
| Ecology | |
| Realm | Palearctic |
| Biome | Temperate broadleaf and mixed forests |
| Geography | |
| Area | 21,496 km2 (8,300 sq mi) |
| Country | Japan |
| Coordinates | 35°30′N133°00′E / 35.5°N 133°E /35.5; 133 |
TheNihonkai evergreen forestsecoregion (WWF ID: PA0427) covers a thin strip of land on the western coast (facing theSea of Japan) of the island ofHonshu in Japan. It is bounded on the east by theNihonkai montane deciduous forests ecoregion.[1][2]
The coastal strips extends for most of the length of the island, encompassing bays, inlets, rocky coasts and caves. Also represented in the ecoregion are theOki Islands andSado Island in the Sea of Japan about 40 km west of Honshu.[3]
The climate of the ecoregion isHumid continental climate, warm wet summer (Köppen climate classification(Cfa)). This climate is characterized by large seasonal temperature differentials. No month averages below 0 °C (32 °F), at least one month averages above 22 °C (72 °F), and four months average over 10 °C (50 °F). Precipitation is relatively even throughout the year.[4][5]
About 37% of the ecoregion is closed evergreen needle-leaf forest, 27% is closed deciduous forest, 11% cultivated, 10% urban/built-up, and the rest is other types of terrain.[3]
Media related toNihonkai Evergreen Forests Ecoregion at Wikimedia Commons