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Ntuj qhov chaw ntawm North America: nta specifications

Ntuj qhov chaw ntawm North America mus rub raws meridians, vim hais tias nyob rau hauv txhua cheeb tsam ntawm lub teb chaws muaj lub sij hawm los tsim tej yam industries. Lub ntxaum tej cheeb tsam yog, qhov ntau nws yog ncav us txog raws caij nyoog nruab nrab. Lub fact tias cov topography ua rau kev hloov nyob rau hauv lub ratio ntawm tshav kub thiab dej tsis tau tsuas yog los ntawm sab qaum teb mus rau sab qab teb, tab sis kuj los ntawm sab hnub poob mus rau sab hnub tuaj.

Ntuj qhov chaw ntawm North America, nyob rau hauv lub cheeb tsam ntawm Greenland thiab cov Canadian Archipelago, hu ua Arctic deserts. Txij li thaum climatic tej yam kev mob yog heev hnyav, qhov no pab mus rau tus txom nyem heev sawv cev ntawm muaj thiab fauna. Nyob rau hauv cov cheeb tsam uas tsis nyob los ntawm cov dej khov, nws yuav pom xwb mosses thiab Lichens. Yuav luag tag nrho cov tsiaj ntiaj teb no nyob rau hauv lub hiav txwv.

Nyob rau hauv lub deb sab qaum teb ntawm lub teb chaws yog lub tundra tsam. Txij li thaum muaj yog ib txwm humidity, lub teb chaws los ua waterlogged. Yuav luag tag nrho cov cheeb tsam no yog them nrog mosses thiab Lichens. Raws li rau cov ntoo, tus ntsias birch thiab Alder tsis cuag ib tug qhov siab ntawm ntau tshaj 5 cm.

Lub farther rau sab qab teb, lub ntuj qhov chaw ntawm North America zoo nce tundra. Nws yog ib tug hloov theem thiab yog yus muaj los ntawm alternating forests thiab tundra chaw. nws kuj yog yus muaj los ntawm qhov kuaj pom ntawm Alder thiab willow thickets. Tsuas yog nyob rau hauv lub cheeb tsam ntawm tus dej ntws pib tshwm spruce thiab larch.

Ntuj cheeb tsam ntawm coniferous hav zoov nyob ntxiv sab qab teb. Ntawm no koj yuav saib tau qhov hnyav thiab ntev lub caij ntuj no thiab lub caij ntuj sov - ib tug luv luv thiab sov so. Nrog hais txog av noo noo thiab huab cua, txij thaum lub cheeb tsam no yog yus muaj los ntawm cov uas tsis muaj ntau ntau cov evaporation thiab humidity ntawm no nyob rau hauv excess.

Ntaub ntawv, North American tsam yus muaj los ntawm intermediate theem. Yog li ntawd, ntawm coniferous thiab deciduous forests yog lub cheeb tsam ntawm mixed forests.

Thiab twb nyob rau hauv ib ncig ntawm lub Appalachian cheeb tsam sawv cev tej yam forests, uas yog yus muaj los ntawm ib tug ntau yam ntawm tsob ntoo hom. Raws li rau cov tsiaj txhu, muaj ntau ntau cov mos lwj, porcupines, bears baribalu thiab possums, uas yog cov xwb cov neeg sawv cev ntawm lub marsupials nyob rau hauv tag nrho cov av loj.

Raws li rau lub tiaj chaw ntawm lub teb chaws, muaj cov hav zoov-steppe cheeb tsam. Eastern ib feem yog hu ua tus tiaj nras, vim hais tias nws muaj ib tug ntau dua degree ntawm dej. Niaj hnub no, cov cheeb tsam no yog tag nrho tilled vim hais tias nws yog tsiag ntawv los ntawm koob pheej ntawm lawv ntawm cov av, dej siab climatic tej yam kev mob thiab zoo dub av.

North America, qhov twg ntuj chaw nyob zoo nyob rau hauv lub hwv ciaj ciam, yog yus muaj los ntawm qhov kuaj pom ntawm lub steppe cheeb tsam nyob rau hauv lub central ib feem ntawm lub teb chaws. Ntawm no, ib tug loj npaum li cas ntawm tshav kub yog nkag, tiam sis qhov no yog tsis yog ib tug txaus tus nqi ntawm noo noo yog compensated.

Raws li rau lub sab hnub tuaj ib feem ntawm lub subtropical thaj tsam, muaj loj hlob mixed forests, sawv cev los ntawm hom heev heev ntawm conifers, ntsias xibtes ntoo thiab tsob nroj hom evergreen ntoo qhib.

Yog hais tias peb tham txog cov Pacific ntug dej hiav txwv, yog yeej los ntawm hardwood forests thiab fab. Lub xau yog xim av, thiab lawv loj hlob ib tug ntau ntawm tsawg hom evergreen ntoo qhib, uas twb paub ua ntej lub Ice muaj hnub nyoog.

Ntuj qhov chaw ntawm America, occupying cov ceg av qab teb Florida thiab California yog hu ua subtropical thiab teb chaws sov. Cov aav yog alternated txhua lwm yam meridian. Lub puab ib feem yog siab nyob rau tej thaj chaw savannah thiab Woodland. Nrog kev xav txog cov Atlantic nqaum tiaj, nws yog nplua mias rau moistened luam cua, vim hais tias nws yog heev loj tus naj npawb ntawm cov teb chaws sov forests.

Nyob rau hauv lub Cordillera feem ntau kom meej meej sawv cev los ntawm high-altitude tsam.

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