Boreal hav zoov yog lub ces kaum tshwj xeeb ntawm xwm

2024 Tus sau: Henry Conors | [email protected]. Kawg hloov kho: 2024-02-12 07:51

Yog li ntawd yog hav zoov dab tsi? Cov lus nug no feem ntau nug los ntawm tib neeg thaum lawv thawj zaug ntsib lub tswv yim no hauv xov xwm thiab hauv Internet. Los ntawm lus Askiv boreal yog txhais ua "sab qaum teb".

Yog li ntawd, lo lus uas feem ntau lees txais yog: boreal hav zoov yog thaj chaw hav zoov nyob rau sab qaum teb ntawm 60˚ sab qaum teb latitude thiab sab qab teb ntawm 60˚ sab qab teb latitude. Nws kwv yees tias cov hav zoov no npog thaj tsam ntawm 1.2 billion hectares. Qhov no sawv cev rau 30% ntawm tag nrho cov peev txheej hav zoov hauv ntiaj teb.

Geography ntawm boreal forests

Kwv yees li 70% ntawm cov hav zoov no nyob hauv Russia. Nws tau ua raws li Alaska thiab Canada, nrog rau cov tebchaws nyob sab Europe, feem ntau yog Finland, Norway, Sweden. Koj yuav tsum paub tias cov hav zoov boreal yog 17% ntawm tag nrho cov khoom lag luam hauv ntiaj teb. Nyob rau hauv Russia lawv hu ua taiga. Feem ntau cov ntoo coniferous loj hlob ntawm no: pines, spruces, firs. Tab sis kuj tseem muaj larches nyob rau hauv qhov chaw qhuav.

Yog vim li cas rau qhov kev faib loj ntawm cov pob zeb no yog txuam nrog kev nyab xeeb ntawm cov cheeb tsam hauv ntiaj teb no. Nws txias ntawm no thaum lub caij ntuj no. Qhov kub tuaj yeem poob mus rau -54˚C. Thiab lub caij ntuj sov yog txias. Qhov no ua rau nag lossis daus tawmrau lub sij hawm ntev cov av yog damp, uas tsim ib tug haum tej yam kev mob rau qhov chaw nyob ntawm noo noo-hlub nroj tsuag. Yog, thiab cov ntoo coniferous lawv tus kheej pab cov tsub zuj zuj ntawm dej hauv av. Poob koob yog qhov zoo tshaj plaws insulator tiv thaiv ya raws evaporation. Raws li txoj cai, tib neeg kev ua haujlwm hauv cov hav zoov zoo li no raug txo kom tsawg. Boreal hav zoov feem ntau dhau los ua thaj chaw tiv thaiv. Vim lub fact tias lawv yog cov loj reserves ntawm ntoo, cov lus nug tshwm sim hais txog lub rational noj ntawm cov kev pab no.

Boreal hav zoov tsiaj

Boreal coniferous hav zoov tsim kev nyob rau ntau tus tsiaj. Ntawm lawv yog mos lwj, elk, xim av bears, qaum teb owls, wolverines, hares, thiab lwm yam. Rare fauna:

- Amur tiger. Raws li qee cov lus ceeb toom, cov pej xeem ntawm cov tsiaj txhu no muaj txog 3,000 tus neeg. Yog li ntawd, lawv tau teev nyob rau hauv Phau Ntawv Liab. Cov zaub mov tseem ceeb ntawm cov miv qus no yog ua los ntawm mos lwj, qus boars, mos lwj liab. Ib tug tsov noj txog 10 kg ntawm nqaij ib hnub twg. Tsis tas li ntawd, nws cov zaub mov suav nrog ntses, vim. nws yog tus ua luam dej zoo heev. Qhov chaw nyob ntawm Amur tsov txuas los ntawm ciam teb ntawm Russia nrog Tuam Tshoj mus rau ntug dej hiav txwv ntawm Okhotsk.

- Grouse - ib tug noog uas nyob hauv boreal coniferous hav zoov ntawm taiga - yog ib tug tswv cuab ntawm tsev neeg grouse. Nws qhov loj me tsis ntau tshaj 50 cm. Nws tsuas yog pub rau cov zaub mov cog, tab sis kuj tuaj yeem noj cov ntoo thuv koob ua zaub mov. Vim nws txoj kev mob siab, nws dhau los ua ib qho yooj yim prey rau cov neeg yos hav zoov thiab cov tsiaj nyeg. Kuj muaj npe nyob rau hauv Phau Ntawv Liab.

Boreal hav zoov flora

Boreal hav zoov yog cov khoom muaj nqiszaub. Spruce yog tus sawv cev tseem ceeb ntawm xws li hav zoov. Vim nws unpretentiousness, nws muaj peev xwm loj hlob ob qho tib si raws li ib tug cais array nyob rau hauv ib tug coniferous thicket, thiab nyob rau hauv ib tug sib xyaw hav zoov, ua ke nrog deciduous ntoo. Pine yog "tus poj huab tais" ntawm hav zoov coniferous. Pine ntoo tuaj yeem muaj hnub nyoog 500 lossis ntau dua xyoo. Qhov siab ntawm lub siab ntev mus txog 80 meters, thiab txoj kab uas hla ntawm lub cev tuaj yeem yog 4 meters. Fir tsis tshua muaj tshwm sim thiab txawv ntawm spruce hauv cov koob softer thiab tsis muaj ntxhiab tsw.

Siberian cedar tau dhau los ua lwm tus neeg sawv cev nto moo ntawm hav zoov coniferous. Nws cov txiv ntseej muaj nuj nqis heev vim muaj ntau cov as-ham thiab cov ntsiab lus tshuaj. Txhua lub khob muaj peev xwm muaj txog li 150 txiv ntseej.

Larch suav hais tias yog tsob ntoo te-tiv taus tshaj plaws hauv ntiaj teb. Nws tuaj yeem tiv taus qhov kub thiab txias mus rau -70˚C. Yog hais tias peb tham txog hardwoods ntawm boreal hav zoov, ces thawj qhov chaw, ntawm chav kawm, yog nyob ntawm birch. Nws raug faib yuav luag txhua qhov chaw, mus txog rau Arctic Circle. Aspen muaj feem xyuam rau poplar. Thiab kuj heev. Nws txoj kev loj hlob ntawm cov tub ntxhais hluas yog ib qho kev noj qab haus huv rau hares, elks thiab mos lwj. Alder ntsuab yog ib tug tswv cuab ntawm tsev neeg birch. Nyob rau sab qaum teb, nws tuaj yeem yog tsob ntoo me me, thiab sab qab teb - tsob ntoo siab 6 m. Linden, roob tshauv thiab juniper tsis tshua muaj nyob hauv hav zoov.

Zoo kawg

Npau suav teb yog qhov khoom plig muaj nqis tshaj plaws rau txhua tus neeg hauv ntiaj teb. Thiab ntawm yuav ua li cas ib tug neeg ntse tswj tus nqi no, nws txoj hmoo yav tom ntej nyob ntawm ntau.

Tom qab tag nrho, hav zoov tsis yog ntoo xwb, tab sis kuj yog lub ntsws ntawm lub ntiaj teb. Tons ntawm carbon dioxide hloov mus rau oxygen thaum lub sij hawm photosynthesis. Tib neeg yuav tsum nco ntsoov qhov no thaum txiav lossis txiav lwm tsob ntoo hauv hav zoov.