Mixed gandun daji yanki ne na halitta wanda yake halayyar yanayi mai yanayi. Bishiyoyi masu yalwa da kwalliya suna girma anan lokaci guda, wanda shine dalilin da yasa gandun daji yake da wannan sunan. Matsayin wannan nau'in gandun daji a duniya:
- Arewacin Amurka - Arewacin Amurka, Kudancin Kanada;
- Eurasia - a cikin Carpathians, a kudu na Scandinavia, a cikin Gabas mai nisa, a Siberia, a cikin Caucasus, sashin sulfur na tsibirin Japan;
- Kudancin Amurka;
- New Zealand ɓangare ne na tsibirin.
A arewacin dazuzzuka masu daƙƙen duwatsu akwai taiga. A kudanci, gaurayayyun gandun daji ya shiga cikin dazuzzuka masu tsattsauran ra'ayi ko kuma gandun daji.
Yanayin yanayi
Yankin yanki na gaurayayyun gandun daji yana da alamun canjin yanayi. Duniyar flora da fauna anan ya dace da sanyi da zafi. Matsakaicin yanayin zafin hunturu ya kai -16 digiri Celsius, kuma wannan adadi na iya sauka zuwa -30 digiri. Lokacin sanyi na matsakaiciyar tsawon lokaci. Lokacin bazara a wannan yankin yana da dumi, matsakaita yanayin zafi ya bambanta daga + 16 zuwa + 24 digiri. A lokacin shekara, babu yawan hazo a nan, kimanin milimita 500-700.
Nau'in fure
Babban jinsin da ke hade da gandun daji:
- itacen oak;
- maple;
- Pine;
- fure
A cikin gandun daji akwai willows da ash dutse, alder da Birch. Bishiyoyi masu yanke itace suna zubar da ganyayensu a lokacin bazara. Conifers sun kasance kore duk shekara. Iyakar abin da banda shi ne larch.
A cikin gandun daji na Turai da aka haɗu, ban da manyan jinsunan da ke samar da gandun daji, elms, lindens, bishiyoyin toka, da itacen apple. Daga cikin shrubs, viburnum da honeysuckle, hazel da warty euonymus ana samun su. A cikin Caucasus, ban da jerin jinsunan, beech da fir har yanzu suna girma.
Gabas ta Gabas tana da halin Ayan spruce da itacen oak na Mongoliya, fir da-daɗaɗɗen bishiyoyi da tokar Manchurian, da Amel karammiski da sauran nau'ikan shuke-shuke. A kudu maso gabashin Asiya, a cikin dazukan coniferous akwai yew, larch, Birch, hemlock, kazalika da gandun daji - bishiyoyin lilac, Jasmine da rhododendron.
Arewacin Amurka na da wadataccen nau'ikan shuke-shuke masu zuwa:
- sequoia;
- taswirar sukari;
- itacen weymouth;
- fir na balsam;
- Pine mai launi;
- kusurwar yamma;
- itacen oak mai launi.
Mixed gandun daji yanki ne mai ban sha'awa sosai na halitta, wanda ke da wakiltar manyan halittu masu yawa. Dazuzzuka irin wannan sun bazu a kusan dukkanin nahiyoyi da wasu tsibirai na yanki mai sanyin yanayi. Wasu nau'ikan tsire-tsire ana samun su a cikin dukkanin gandun daji da aka gauraye, yayin da wasu ke halayyar wasu halittu ne kawai.
