Nui nā ululāʻau ma ka honua, kahi o ka kumu nui o nā mea kanu nā lāʻau. Aia i ke aniau a me nā kūlana kūlohelohe, he mau ʻano like ʻole nā ulu lāʻau. Inā lanakila nā lāʻau coniferous, he nahele nahele ia. ʻIke ʻia ke kaiaolaola kūlohelohe i ka taiga o ka hemisphere ʻākau, a ma ka hemisphere hema ʻike ʻia i kekahi manawa i ka ʻāpana tropical. Kāhea ʻia nā ulu lāʻau Taiga he boreal. Aia lākou ma ʻAkau ʻAkau a me Eurasia. Ulu nā kumulāʻau ma kahi anuanu wela i nā lepo podzolic.
Ma waena o nā ʻāpana kūpona, pono e ʻike ʻia ka Meshchera Lowland, ma ka palena o kahi e kū ai ka Belt Great of Coniferous Forests. Aia ia ma Rūsia - ma nā moku ʻo Ryazan, Moscow a me Vladimir. Ma mua, ua hoʻopuni ka nahele coniferous i kahi nui mai Polesye a i nā Ural, akā i kēia lā he hapa liʻiliʻi wale nō o kēia wahi kūlohelohe i ola. Ke ulu nei nā pine a me nā spruces ʻEulopa ma aneʻi.
ʻO ke kumu o nā ululāʻau coniferous
ʻO nā ululāʻau o kēia ʻano i hoʻomaka i ka wā Cenozoic i nā kuahiwi o ʻAsia. Ua uhi lākou i nā wahi liʻiliʻi o Siberia. I ka Late Pliocene, ua kōkua ke anuanu i ka emi ʻana o nā mahana, a ua hoʻomaka nā conifers e ulu ma nā pāpū i kahi aniela Continental, e hoʻonui nei i kahi ʻāpana nui o kā lākou pae. Hoʻolahalaha nā ulu lāʻau i ka wā interglacial. I ka Holocene, ua hohonu ka palena o ka ululāʻau coniferous i ka ʻākau o Eurasia.
Flora o ke kāʻei coniferous
ʻO nā ʻano hana nahele o ke kāʻei coniferous penei:
- nā lāʻau paina;
- larch;
- kaʻaahi;
- ʻai;
- kedera.
Aia nā hui like ʻole o nā kumulāʻau i nā ululāʻau. Ma Kanada a me USA, hiki iā ʻoe ke loaʻa ka fir a me ka balsamic spruce, Sitka a me nā spruce ʻAmelika, pine pine melemele. Ulu ʻo Junipers, hemlock, cypress, redwood a thuja ma aneʻi.
I nā ululāʻau ʻEulopa, hiki iā ʻoe ke ʻike i nā keʻokeʻo fir, nā lālani ʻEulopa, juniper a me nā yew, ka pine maʻamau a ʻeleʻele hoʻi. I kekahi mau wahi aia nā admixtures o nā lāʻau broadleaf. Aia i loko o nā ululāʻau ʻo Siberian coniferous nā ʻano larch a me spruce, fir a me nā kedera, a me ka juniper. Ma ka Hikina hikina, Sayan spruce a larch, ulu ʻo Kuril fir. Loaʻa nā ululāʻau coniferous āpau i nā kumulāʻau like ʻole. I kekahi mau wahi, ulu nā nāhelehele o ka hazel, euonymus a me nā raspberry i waena o nā conifers. Aia nā laikini, nā limu, nā mea kanu lau nahele ma aneʻi.
ʻO ka hopena, ʻo ka Belt Great of Coniferous Forests kahi wahi kūlohelohe i hoʻokumu ʻia i ka wā pre-glacial a hoʻonui ʻia i nā wā aʻe. Ua loli ka hoʻololi o ke anil i ka mahele o ka conifers a me ke ʻano o nā ululāʻau o ka honua.
