The Hokkaido montane conifer forests

ecoregion An ecoregion (ecological region) is an ecological and geographic area that exists on multiple different levels, defined by type, quality, and quantity of environmental resources. Ecoregions cover relatively large areas of land or water, and c ...

covers the mountainous central regions of Hokkaido Island, the northernmost of Japan's main islands. Forests of spruce and fir thrive in the subalpine, cool climate. On the northeastern edge of the island, the conifer forests extend down to the sea under the influence of the cold

Oyashio Current The , also known as the Okhotsk Current or Kurile Current, is a cold subarctic ocean current that flows south and circulates counterclockwise in the western North Pacific Ocean. The waters of the Oyashio Current originate in the Arctic Ocean ...

coming down from the north, although logging in recent years has put pressure on these stands.

Location and description

The mountainous region is surrounded by the lower plains and hills of the Hokkaidō deciduous forests ecoregion. Central to the region is the Daisetsuzan Volcanic Group, the location of

Daisetsuzan National Park , or Taisetsuzan is located in the mountainous center of the northern Geography of Japan, Japanese island of Hokkaido. At , Daisetsuzan is the largest national park in Japan, and is approximately the size of Kanagawa Prefecture. Daisetsuzan, mean ...

, the largest national park in Japan. The highest mountain on the island, and in the region, is

Asahi-dake is a mountain located near the town of Higashikawa, Hokkaido and the tallest mountain on the Japanese island of Hokkaido. It is part of the Daisetsuzan Volcanic Group of the Ishikari Mountains, located in the northern part of the Daisetsuzan Nat ...

with an elevation of . Above the conifer line, alpine conditions support thickets of Stone pine ''( Pinus pumila)''

Climate

The climate of the ecoregion is '' Humid continental climate, warm summer'' (

Köppen climate classification The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ...

(Dfb)). This climate is characterized by large seasonal temperature differentials and a warm summer (at least four months averaging over , but no month averaging over . Average annual precipitation is 1,150 mm.

Flora and fauna

The dominant trees in the region are Ezo spruce ''( Picea jezoensis)'', Sakhalin fir ''( Abies sachalinensis)'', Sakhalin spruce ''( Picea glehnii)'', ''

Pinus thunbergii ''Pinus thunbergii'' (syn: ''Pinus thunbergiana''), the black pine, Japanese black pine, or Japanese pine, is a pine tree native to coastal areas of Japan (Kyūshū, Shikoku and Honshū) and South Korea. It is called () in Korean, () in Chin ...

'', ''

Prunus nipponica ''Prunus nipponica'', also called or Kurile cherry, is a shrub which originates from the islands of Hokkaido and Honshu, Japan. It grows to a height of about and can grow in sandy, loamy, and clay soils. This species is one of the hardiest of ...

'', ''

Cryptomeria japonica ''Cryptomeria'' (literally "hidden parts") is a monotypic genus of conifer in the cypress family Cupressaceae. It includes only one species, ''Cryptomeria japonica'' ( syn. ''Cupressus japonica'' L.f.). It is considered to be endemic to Japa ...

'', ''

Sciadopitys verticillata ''Sciadopitys verticillata'', the or Japanese umbrella-pine, is a unique conifer Endemism, endemic to Japan, Sakhalin, and the Kuril Islands. It is the sole living member of the family Sciadopityaceae and genus ''Sciadopitys'', a living fossil ...

'', '' Salix pierotii'', '' Castanopsis sieboldii'', ''

Camphora officinarum ''Camphora officinarum'' is a species of evergreen tree indigenous to warm temperate to subtropical regions of East Asia, including countries such as China, Taiwan, Vietnam, Korea, and Japan. It is known by various names, most notably the camph ...

'', ''

Cercidiphyllum japonicum ''Cercidiphyllum japonicum'', known as the Katsura (from its Japanese name カツラ, 桂), is a species of flowering tree in the family Cercidiphyllaceae native to China and Japan. It is sometimes called ''caramel tree'' for the light caramel sm ...

'', '' Fagus crenata'', '' Larix gmelinii'', ''

Larix sibirica ''Larix sibirica'', the Siberian larch or Russian larch, is a frost-hardy tree native to western Russia, from close to the Finnish border east to the Yenisei valley in central Siberia, where it hybridises with the Dahurian larch ''L. gmelinii ...

'', '' Larix × czekanowskii'', '' Betula dahurica'', ''

Betula pendula ''Betula pendula'', commonly known as silver birch, warty birch, European white birch, or East Asian white birch, is a species of tree in the family (biology), family Betulaceae, native plant, native to Europe and parts of Asia, though in so ...

'', '' Pinus koraiensis'', ''

Pinus sibirica ''Pinus sibirica'', or Siberian pine, in the family Pinaceae is a species of pine tree that occurs in Siberia from 58°E in the Ural Mountains east to 126°E in the Stanovoy Range in southern Sakha Republic, and from Igarka at 68°N in the l ...

'', ''

Pinus sylvestris ''Pinus sylvestris'', the Scots pine (UK), Scotch pine (US), Baltic pine, or European red pine is a species of tree in the pine family Pinaceae that is native plant, native to Eurasia. It can readily be identified by its combination of fairly s ...

'', '' Picea obovata'', ''

Abies sibirica ''Abies sibirica'', the Siberian fir, is a coniferous evergreen tree native to the taiga east of the Volga River and south of 67°40' North latitude in Siberia through Turkestan, northeast Xinjiang, Mongolia and Heilongjiang. Distribution The ...

'', '' Quercus mongolica'', ''

Quercus acutissima ''Quercus acutissima'', the sawtooth oak, is an Asian species of oak native to China, Tibet, Korea, Japan, Taiwan, Siberia, Mongolia, Bangladesh, Philippines, Indonesia, Malaysia, India, Pakistan, Sri Lanka, Brunei, Indochina (Vietnam, Thailand, ...

'', ''

Ginkgo biloba ''Ginkgo biloba'', commonly known as ginkgo or gingko ( ), also known as the maidenhair tree, is a species of gymnosperm tree native to East Asia. It is the last living species in the order Ginkgoales, which first appeared over 290 million year ...

'', ''

Prunus serrulata ''Prunus serrulata'' or Japanese cherry is a species of cherry tree that grows wild in Japan, China, Korea, Vietnam, Taiwan, Laos, Myanmar, Thailand, Cambodia, India, Bangladesh, Bhutan, Nepal, Sri Lanka, Pakistan, Philippines, Malaysia, Indones ...

'', ''

Prunus padus ''Prunus padus'', known as bird cherry, hackberry (unrelated to the genus ''Celtis''), hagberry, or Mayday tree, is a flowering plant in the Rosaceae, rose family. It is a species of cherry, a deciduous small tree or large shrub up to tall. It ...

'', '' Tilia amurensis'', ''

Salix babylonica ''Salix babylonica'' (Babylon willow or weeping willow; ) is a species of willow native to dry areas of northern China, Korea, Mongolia, Japan, and Siberia but cultivated for millennia elsewhere in Asia, being traded along the Silk Road to southw ...

'', ''

Acer palmatum ''Acer palmatum'', commonly known as Japanese maple, palmate maple, or smooth Japanese maple (Korean: ''danpungnamu'' []; Japanese: ''irohamomiji'' [] or ''momiji'' []), is a species of woody plant native to Korea, Japan, China, eastern Mongol ...

'', ''Carpinus laxiflora'', ''Populus tremula'', '' Ulmus davidiana'', '' Ulmus pumila'', '' Pinus pumila'', '' Haloxylon ammodendron'', ''

Elaeagnus angustifolia ''Elaeagnus angustifolia'', commonly called Russian olive, silver berry, oleaster, or wild olive, is a species of ''Elaeagnus'', native to Asia and limited areas of eastern Europe. It is widely established in North America as an introduced specie ...

'', ''

Tamarix ramosissima ''Tamarix ramosissima'', commonly known as saltcedar salt cedar, or tamarisk, is a deciduous arching shrub with reddish stems, feathery, pale green foliage, and characteristic small pink flowers. The cultivar 'Pink Cascade' (dark pink flowered) ...

'', and ''

Prunus sibirica ''Prunus sibirica'', commonly known as Siberian apricot, is a species of shrub or small tree native to northern China, Korea, Mongolia, and eastern Siberia. It is classified in the rose family, Rosaceae, and is one of several species whose fruit ...

''. There are scattered stands of Erman's birch ''(

Betula ermanii ''Betula ermanii'', or Erman's birch, is a species of birch tree belonging to the family (biology), family Betulaceae. It is an extremely variable species and can be found in Northeast China, Korea, Japan, and Russian Far East (Kuril Islands, S ...

)''. The conifer belt rises to an altitude of .

Protected areas

* Akan Mashu National Park * Kushiro-shitsugen National Park * Shikotsu-Tōya National Park

References

{{reflist Palearctic ecoregions Ecoregions of Japan