Tsarin carbon
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Tsarin carbon shine wannan bangare na sake zagayowar biogeochemical wanda ake musayar carbon tsakanin biosphere, pedosphere, geosphere, hydrosphere, da yanayi na Duniya. Sauran manyan sake zagayowar biogeochemical sun haɗa da sake zagayolar nitrogen da sake zagaye na ruwa. Carbon shine babban bangare na mahadi na halitta da kuma babban bangare ne na ma'adanai da yawa kamar dutse. Tsarin carbon ya ƙunshi jerin abubuwan da suka faru waɗanda keda mahimmanci don sa Duniya ta iya kiyaye rayuwa. Ya bayyana motsi na carbon yayin da aka sake amfani dashi kuma aka sake amfani dashi a duk faɗin biosphere, da kuma matakai na dogon lokaci na ƙwaƙwalwar carbon (ajiyewa) zuwa da saki daga sinks na carbon.
Don bayyana yanayin sake zagayowar carbon, ana iya yin bambanci tsakanin saurin saurin sautin carbon. Ana kuma kiran sake zagayowar carbon mai sauri a matsayin sake zagayolar carbon na halitta. Saurin zagaye na carbon na iya kammalawa cikin shekaru, motsa abubuwa daga yanayi zuwa biosphere, sannan komawa cikin yanayi. Saurin ko sake zagayowar ƙasa (wanda ake kira zurfin sake zagayolar carbon) na iya ɗaukar miliyoyin shekaru don kammalawa, abubuwa masu motsi ta hanyar ɓawon burodi na Duniya tsakanin duwatsu, ƙasa, teku da yanayi.[2]
Mutane sun dame sake zagayowar carbon na ƙarni da yawa. Sunyi hakan ta hanyar canza amfani da ƙasa da kuma hakar ma'adinai da ƙone carbon daga tsoffin kayan halitta (kwal, man fetur da gas). [1] Carbon dioxide a cikin yanayi yakaru kusan 52% a kan matakan da suka gabata zuwa 2020, wanda ya haifar da dumamar duniya.[3] Karin carbon dioxide ya kuma haifar da raguwa a cikin darajar pH na teku kuma yana canza sunadarai na ruwa.[4] Carbon dioxide yana da mahimmanci ga photosynthesis.