Namhlanje siza kuthetha malunga uluhlu lweentaba zeArctic. Yinkqubo yeentaba yamanqanaba aqhekeke kakhulu. Kukwaziwa nangokuthiwa ziiArctic Rockies. Ime kumantla mpuma kunxweme loMntla Melika. Ineentaba ezininzi ezinomkhenkce kunye neencaba ezinkulu zomkhenkce eziba yimbonakalo eyodwa yomhlaba. Olu luhlu lweentaba olunqamleza empuma kunye namanzi eBaffin Bay kwaye kwinxalenye esemantla inqamleza uLwandlekazi iArctic, kungoko igama labo
Kule nqaku siza kukuxelela ngazo zonke iimpawu, i-geology, i-flora kunye nezilwanyana zeentaba ze-Arctic.
Iimpawu eziphambili
Uluhlu lweentaba oluphuma kwincam esemantla yeLabrador Peninsula kwaye luhlala kulo lonke unxweme nakwezona ziqithi zikwiqithi laseCanada laseArctic. Zigubungela umgama opheleleyo ongaphezulu kweekhilomitha ezingama-2.700. Ineencopho ezininzi zomkhenkce kunye nomqungu womkhenkce omninzi owenza iindawo ezinkulu zomkhenkce. Ezolawulo, ikwangumbuso ozimeleyo waseNunavut, nangona indawo esempuma-mpuma ikumaphondo aseNewfoundland naseLabrador naseQuebec.
Yinkqubo eyahlula-hlulwe yaba luthotho lweentaba kwaye ezineentaba eziphakame ngaphezulu kwe-2.000 yeemitha. Eyona ncopho iphakamileyo yaziwa ngokuba yiBarbeau Peak kwaye ingama-2.616 eemitha ukuphakama. Kukwaziwa njengeyona ndawo iphakamileyo kwimpuma yoMntla Melika. Yonke le nkqubo yentaba ikunye ne Iintaba ezinamatye, kwezimbini eziphambili eCanada. Yenye yeecozzones emida kumantla oLwandlekazi lweArctic, ngelixa kwinxalenye yecandelo laseLabrador linemozulu eyaziwa ngokuba yitaiga. Ikhaka le-taiga alibonakali liyichaphazela i-Ecozone, apho uninzi lwezinto ezahlukeneyo eziphilayo lufumaneka khona, kwaye ayichaphazeli imida yomda. Kungenxa yokuba iipropathi zebhayiloji zichasene.
Kule meko sifumana imozulu ebandayo xa ithelekiswa nemozulu efudumeleyo kunye nezinye iintlobo zezityalo ezahlukeneyo kunye nezilwanyana ezifanele iimeko ezahlukeneyo. Ukuma ngaphandle kokuba Ukuma komhlaba kulawulwa ziindawo ezinkulu zomkhenkce ezinee-alpine glaciers kunye ne-fjords zangaphakathi. Yonke le seti ye-ecosystems yenza indawo ekhethekileyo yobuhle obukhulu. Inemizimba emikhulu yemida yamanzi eneemeko ezahlukileyo zokusingqongileyo kwiindawo ezininzi zeArctic ezifanayo kwihlabathi. Indawo yabo yaziwa ngokuba neemeko zokungaxoleli, nangona abantu begcine abantu abamalunga newaka.
Iimeko zokusingqongileyo kwintaba yeArctic
Indawo yonke ingama-75% egutyungelwe ngumkhenkce okanye ibhedi eveziweyo. Apha sifumana umhlaba owomileyo owomileyo okhenkciweyo owaziwa ngokuba yi-permafrost. Le permafrost ihlala unyaka wonke kwaye yenza ukuba izityalo kunye nobomi bezilwanyana bunqabile. Gcina ukhumbula ukuba ukuze ubomi bubekhona kufuneka kubekho ikhonkco lokutya. Iziphumo zeli khonkco yindlela ezinxibelelana ngayo izilwanyana kunye nezityalo.
Kwiintaba zeArctic uluhlu lobushushu obuphakathi isusela kwiidigri ezi-6 ehlotyeni ukuya kwi -16 degrees ebusika. La maqondo obushushu asezantsi enza ukuba uhlaza lungabikho. Ngokuyintloko isizathu sokuba kungabikho zityalo kungenxa yomkhenkce osisigxina nekhephu. Uluhlu lweentaba zeArctic luhlobo oluncinci lwe-ecozone xa kuthelekiswa nezinye iindawo eCanada.
Le yeyona ntaba isemantla ehlabathini. Ziyaziwa njengeeNtaba zeChallenger kwaye zikummandla okumantla ntshona esiqithi. Ngenxa yokubaluleka kwazo kwindalo kunye nolungelelwaniso lwendalo, iperimeter yasekwa nenqanaba lendawo ekhuselweyo yendalo. Iyaziwa ngokuba yiTorngat Mountains National Park Reserve, ebekwe kwiLabrador Peninsula kwaye igubungela uninzi lwencam esemazantsi oLwandle lweArctic. Indawo ekhuselweyo yendalo inoxanduva lokukhusela iintlobo ezininzi zezilwanyana zasendle ezinje ngeebhere ze-polar, i-peregrine falcons, iinkozi zegolide kunye ne-caribou.
Indawo ekhuselweyo yendalo yentaba yeArctic
Ipaki yendalo yasekwa nge-22 kaJanuwari ngo-2005, iyenza ipaki yesizwe yokuqala ukwenziwa eLabrador. Inenani elikhulu lomkhenkce kunye neekepusi ezisemazantsi apho eyona ndawo iyileyo iyinxalenye esemantla kwaye igqunywe ngumkhenkce. Amagqabantshintshi axhaphake kakhulu kumazantsi asezantsi njengoko emanzi kakhulu. Ukuba siya kwisiqithi i-Ellesmere, sibona ukuba uninzi lwezinto onokukhetha kuzo zigutyungelwe ngumkhenkce nomkhenkce. Ukutyhubela inkulungwane ye-500, lonke unxweme olusemantla ntshona lwesiqithi lwalugutyungelwe yishelufu enkulu yomkhenkce oziikhilomitha ezingama-90 ubukhulu. Njengoko kulindelwe, ezi ntaba zichaphazeleka sisiphumo sokufudumala komhlaba. Lo mmandla wonke womkhenkce wancitshiswa ngama-XNUMX% ngenxa yeempembelelo zokunyuka kwamaqondo obushushu okubangelwa kukukhutshwa kweegesi zegreenhouse.
Kukho uphononongo olwenziwe ngo-1986 malunga nefuthe lobushushu behlabathi kwintaba ye-Arctic kwaye kwafumaniseka ukuba i-48 km2, ebandakanya i-3.3 km 3 (0.79 cubic miles) yomkhenkce, yaqhekeka kwiishelufa zomkhenkce zase-Milne nase-Ayles. Ngo-1959 nango-1974. Elona candelo likhulu liseleyo lomkhenkce wolwandle lomhlaba liyaziwa njengeShelf yeWadi Hunt. Ukwahlukana kweeshelfu zomkhenkce e-Ellesmere kuye kwaqhubeka kwikhulu lama-XNUMX: Ishelf yeWadi yeWadi yafumana uqhekeko olukhulu ngehlobo lowama-2002.
Ibhokisi yokufudumala kwehlabathi, olona qhekeko lukhulu luye lwenzeka eqongeni elinokuba sisongelo kumzi mveliso weoyile kuLwandle iBeaufort.
Njengoko ubona, enye yezona ntaba zintle ehlabathini ichaphazeleka ngamandla ziziphumo zobushushu behlabathi. Ndiyathemba ukuba olu lwazi ungafunda okuninzi malunga noluhlu lweentaba zeArctic kunye neempawu zayo.