Ƙasar carbon feedback
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Ra'ayin carbon na ƙasa ya shafi fitar da carbon daga ƙasa don mayar da martani ga ɗumamar duniya.Wannan martani a ƙarƙashin canjin yanayi shine tabbataccen yanayin.Akwai kusan sau biyu zuwa uku fiye da carbon acikin ƙasan duniya fiye da yanayin duniya,[1] wanda ya sa fahimtar wannan ra'ayi mai mahimmanci don fahimtar canjin yanayi na gaba.Ƙara yawan numfashin ƙasa shine babban dalilin wannan ra'ayi, inda ma'auni ke nuna cewa 4 °C na ɗumama yana ƙara shaƙar ƙasa a shekara da kashi 37%.[2]