Itundra liqula elihle nekhabhoni... Ubuncinci bekunjalo. Kule mihla, umthamo wayo wokugcina wonakaliswe kakhulu, ngenxa yokunyuka kweqondo lobushushu: the izinto eziphilayo ephila zikhupha ngakumbi nangakumbi i-CO2 emoyeni, ngelixa indlela yokubamba ifotosinthesisi ichaphazeleka kumanqanaba athile.
Ngotshintsho lwemozulu, uhlaza kwaye izinto eziphilayo zinokukhupha ngaphezulu nekhabhoniKwimo ye ikharbon diokside okanye imethane, kunokuba bebenokugcina. Ngaphezu kweminyaka elishumi ngoku, abaphandi bemi kwisikhululo sophando se Zakenberg, emantla eGreenland, kuvavanya ukulinganisela kwekhabhoni kuyo yonke itundra Ikhonkco mantla.
Kuphononongo olupapashwe kwiphephancwadi Ijenali yoPhando lweGeophysical, iqela elikhokelwa Magnus Lund ibonisa ukuba ukukhutshwa kwe-CO2 okubangelwa zizidalwa eziphilayo kuyenyuka njengoko amaqondo obushushu enyuka.
Ukuseta ukulinganisela kwekhabhoni Yetundra, izazinzulu ziye zafunda iindlela ezimbini: izinga lekhabhoni ekhutshwe ngohlobo lwe CO2 ukuphefumla, kunye nezinga eligcinwe zizityalo ngokusebenzisa ifotosinthesis. Ukusuka kwezi ndlela zimbini, kunokwenzeka ukumisela ukuba ngaba itundra ngumthombo okanye iqula nekhabhoni.
El kufunda ibonisa ukuba ukukhutshwa kwe-CO2 okubangelwa kukuphefumla kwezilwanyana kunyuka ngokulandelelana kunye lobushushu. Kwelinye icala, ukugcinwa kwekhabhoni okunxulumene ne ifotosinthesis kuyancipha njengoko amaqondo obushushu enyuka. Kuyabonakala ukuba oku ukugcinwa iyaphela nini lobushushu idlula ku-7ºC.
Iinkcukacha ezithe xaxe - UGoogle wenza i-carbon footprint yakhe esidlangalaleni