The Taiheiyo evergreen forests is a temperate broadleaf forest

ecoregion An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of ...

of Japan.

Geography

The ecoregion covers an area of on the

Pacific The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contine ...

''(Taiheiyo)'' side of the islands of

Honshu , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island se ...

Shikoku is the smallest of the four main islands of Japan. It is long and between wide. It has a population of 3.8 million (, 3.1%). It is south of Honshu and northeast of Kyushu. Shikoku's ancient names include ''Iyo-no-futana-shima'' (), '' ...

, and Kyushu. It also includes

Tsushima Island is an island of the Japanese archipelago situated in-between the Tsushima Strait and Korea Strait, approximately halfway between Kyushu and the Korean Peninsula. The main island of Tsushima, once a single island, was divided into two in 1671 by ...

in the

Korea Strait The Korea Strait is a sea passage in East Asia between Korea and Japan, connecting the East China Sea, the Yellow Sea and the Sea of Japan in the northwest Pacific Ocean. The strait is split by the Tsushima Island into the Western Channel and ...

between Kyushu and Korea, and the volcanic Izu Islands off Honshu's southern coast. The ecoregion is home to Japan's largest cities, including

Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and List of cities in Japan, largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, ...

Yokohama is the second-largest city in Japan by population and the most populous municipality of Japan. It is the capital city and the most populous city in Kanagawa Prefecture, with a 2020 population of 3.8 million. It lies on Tokyo Bay, south of T ...

Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of ...

, and

Nagoya is the largest city in the Chūbu region, the fourth-most populous city and third most populous urban area in Japan, with a population of 2.3million in 2020. Located on the Pacific coast in central Honshu, it is the capital and the most po ...

Climate

The ecoregion has a humid subtropical climate. The influence of the Japan Current creates a humid climate with mild winters and a long growing season, which nurtured evergreen broadleaf forests.

Flora

Laurel forests grew near the coast, and

oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...

forests were predominant inland. At higher elevations, the Taiheiyo evergreen forests yielded to the Taiheiyo montane deciduous forests of the interior. The forests include a mix of species with origins in temperate and tropical Asia. Species with tropical origins include two species of the conifer ''

Podocarpus ''Podocarpus'' () is a genus of conifers, the most numerous and widely distributed of the podocarp family, the Podocarpaceae. The name comes from Greek πούς (poús, “foot”) + καρπός (karpós, “fruit”). ''Podocarpus'' species ...

'', two species of ''

Pittosporum ''Pittosporum'' ( or ) is a genus of about 200 species of flowering plants in the family Pittosporaceae. The genus is probably Gondwanan in origin; its present range extends from Australasia, Oceania, eastern Asia and some parts of Africa. ''Cit ...

'', several species in the

laurel family Lauraceae, or the laurels, is a plant family that includes the true laurel and its closest relatives. This family comprises about 2850 known species in about 45 genera worldwide (Christenhusz & Byng 2016 ). They are dicotyledons, and occur m ...

''(

Machilus ''Machilus'' is a genus of flowering plants in the family Lauraceae. It is found in temperate, subtropical, and tropical forest, occurring in China, Korea, Japan, Taiwan, Indochina, the Indian subcontinent, Malaysia, Indonesia, and the Philip ...

Neolitsea ''Neolitsea'' is a genus of about 85 species of evergreen shrubs and small trees in the laurel family Lauraceae. They range from Indo-Malaysia to East Asia to Australia. The leaves are alternate, clustered, or verticillate, rarely subopposite. Sp ...

,'' and ''

Cinnamomum ''Cinnamomum'' is a genus of evergreen aromatic trees and shrubs belonging to the laurel family, Lauraceae. The species of ''Cinnamomum'' have aromatic oils in their leaves and bark. The genus contains approximately 250 species, distributed in ...

)'', and the

Cycad Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male o ...

Cycas revoluta ''Cycas revoluta'' (Sotetsu apanese ソテツ sago palm, king sago, sago cycad, Japanese sago palm) is a species of gymnosperm in the family Cycadaceae, native to southern Japan including the Ryukyu Islands. It is one of several species used f ...

''. Trees with origins in temperate Eurasia include species of evergreen

s and ''

Castanopsis ''Castanopsis'', commonly called chinquapin or chinkapin, is a genus of evergreen trees belonging to the beech family, Fagaceae. The genus contains about 140 species, which are today restricted to tropical and subtropical eastern Asia. A total o ...

''.

Fauna

Native mammals include the

Sika deer The sika deer (''Cervus nippon''), also known as the Northern spotted deer or the Japanese deer, is a species of deer native to much of East Asia and introduced to other parts of the world. Previously found from northern Vietnam in the south to ...

(''Cervus nippon'') and

Japanese macaque The Japanese macaque (''Macaca fuscata''), also known as the snow monkey, is a terrestrial Old World monkey species that is native to Japan. Colloquially, they are referred to as "snow monkeys" because some live in areas where snow covers the gr ...

(''Macaca fuscata''). Native birds include the

fairy pitta The fairy pitta (''Pitta nympha'') is a small and brightly colored species of passerine bird in the family Pittidae. Its diet mainly consists of earthworms, spiders, insects, slugs, and snails. The fairy pitta breeds in East Asia and migrates s ...

(''Pitta nympha'') and

Japanese night heron The Japanese night heron (''Gorsachius goisagi'') is a species of night heron found in East Asia. It breeds in Japan, and winters in the Philippines and Indonesia. It is also seen in the spring and summer in Korea and the Russian Far East. The ...

(''Goraschius goisagi''). The terrestrial Odaigahara salamander (''Hynobius boulengeri'') is native to the ecoregion.

Conservation and threats

Most of forests have been converted to agriculture or cities. Remnant areas of forest remain around temples and shrines, on steep slopes, and in gorges. Secondary growth woodlands, called ''

Satoyama is a Japanese term applied to the border zone or area between mountain foothills and arable flat land. Literally, ''sato'' () means village, and ''yama'' () means hill or mountain. Satoyama have been developed through centuries of small-scale ...

'', are found on hillsides bordering farmlands.

Protected areas

17% of the ecoregion is in protected areas. Protected areas include

Fuji-Hakone-Izu National Park is a national park in Yamanashi, Shizuoka, and Kanagawa Prefectures, and western Tokyo Metropolis, Japan. It consists of Mount Fuji, Fuji Five Lakes, Hakone, the Izu Peninsula, and the Izu Islands. Fuji-Hakone-Izu National Park covers . Rat ...

Ise-Shima National Park is a national park in Mie Prefecture, Japan. It is characterized by its ria coast and islands scattered around a number of bays. The interior is hilly with Mount Asama-ga-take ( the highest peak. Natural areas * Ago Bay * Kami-shima * Kashiko ...

Yoshino-Kumano National Park is a national park comprising several non-contiguous areas of Mie, Nara, and Wakayama Prefectures, Japan. Established in 1936, the park includes Mount Yoshino, celebrated for its cherry blossoms, as well as elements of the UNESCO World Heritag ...

, Seto Inland Sea National Park,

Ashizuri-Uwakai National Park is a national park at the southwestern tip of the island of Shikoku, Japan. The park is spread over small areas on the western side of Shikoku between Ehime and Kōchi prefectures. The main feature of the park is Cape Ashizuri, the southernmo ...

Kirishima-Kinkowan National Park is a national park in Kyūshū, Japan. It is composed of Kirishima-Kagoshima Bay, an area of Kagoshima Prefecture and Miyazaki Prefecture known for its active volcanoes, Volcanic crater lake, volcanic lakes, and onsen. The total area is . Histo ...

Unzen-Amakusa National Park is a national park in Nagasaki, Kumamoto, and Kagoshima Prefectures, Japan. Established in 1934, the park derives its name from Mount Unzen, an active volcano at the middle of the Shimabara Peninsula, and the Amakusa islands in the Yatsushiro ...

Saikai National Park is a marine national park located in Nagasaki prefecture of northwest Kyūshū, Japan. It consists of the coastal regions of Matsuura Peninsula, extending northward from the port city of Sasebo and encompasses the Kujūku Islands, with over ...

, and Suigō-Tsukuba Quasi-National Park ().UNEP-WCMC (2020). Protected Area Profile for Japan from the World Database of Protected Areas, October 2020. Available at: www.protectedplanet.net

References

External links

* {{Paleartic temperate broadleaf and mixed forests Ecoregions of Japan * Forests of Japan Palearctic ecoregions Temperate broadleaf and mixed forests