Canjin yanayi sakamakon dumamar yanayi da ake dangantawa da wuce gona da iri watsi a cikin yanayi babbar barazana ce ga al'ummomi a fadin duniya. Dangane da mayar da martani, masu ruwa da tsaki suna aiki don rage fitar da iskar carbon a cikin yanayi wanda ake tunanin shine mabuɗin rigakafin cutar. canjin yanayi. Matakan kulle-kulle na baya-bayan nan da nufin ɗaukar yaduwar kwayar cutar SARS CoV-2 da ke da alhakin cutar ta COVID-19 ta rage ayyukan tattalin arziƙin ɗan adam na ɗan lokaci wanda ke haifar da rage hayaki a cikin yanayi. Wannan ya ba da yuwuwar yanayi na gaba na canjin yanayin yanayi saboda raguwar fitar da iska. Wani bincike na baya-bayan nan ya nuna cewa ingantacciyar iskar iska saboda kulle-kulle bai rage yawan ci gaban yanayi na iskar gas ba kamar yadda ake tsammani. Wannan ya faru ne saboda ƙãra rayuwar methane (muhimmin iskar gas) kuma wani ɓangare saboda rage yawan ruwan teku na CO.2. Wannan yana nuna cewa barazanar canjin yanayi kuma gurbacewar iska ba ta bambanta ba amma matsalolin da ke da alaƙa da juna. Don haka, ya kamata a yi la'akari da ƙoƙarin rage hayaki mai gurbata yanayi tare da inganta ingancin iska tare.
An ayyana cutar ta COVID-19 bayan barkewarta a birnin Wuhan na kasar Sin a matsayin barkewar damuwa a duniya a ranar 30 ga Janairu, 2020. Ba da dadewa ba ta dauki wani nau'i mai matukar tsanani kuma ta bazu a duniya kuma ta sanar da barkewar cutar a ranar 11 ga Maris 2020. Tun daga wannan lokacin, cutar ta haifar da cutar. wahalar ɗan adam da ba a taɓa yin irinsa ba da kuma barnar tattalin arziki mai yawa.
Ƙoƙarin ɗaukar nauyi da rage COVID-19 ya ba da garantin sanya takunkumi mai tsanani kan ayyukan ɗan adam ta hanyar kulle-kulle wanda ya haifar da raguwa sosai a ayyukan masana'antu da tattalin arziƙi, sufuri da zirga-zirgar jiragen sama na tsawon watanni da yawa. Wannan ya haifar da raguwa sosai a watsi cikin yanayi. Fitar da iskar Carbon dioxide (CO2) ta ragu da kashi 5.4% a shekarar 2020. Ingantacciyar iska ta inganta yayin kulle-kullen. An ga canje-canje a bayyane a cikin abubuwan da ke cikin yanayi.
Mutum zai yi tsammanin yawan haɓakar iskar gas a cikin yanayi zai ragu saboda kullewa amma hakan bai faru ba. Duk da raguwar gurɓacewar masana'antu da hayakin ababen hawa/ sufuri, yawan haɓakar yanayi na iskar gas bai ragu ba. Madadin haka, adadin CO2 a cikin yanayi ya ci gaba da girma a kusan daidai da adadin na shekarun da suka gabata.
Wannan binciken da ba a zata ba ya kasance wani bangare saboda rage yawan CO2 kusa da tsiron teku. Babban mahimmancin abu shine methane na yanayi. A cikin lokaci na al'ada, nitrogen oxides, daya daga cikin gurɓataccen iska (masu gurɓataccen iska guda shida sune carbon monoxide, gubar, nitrogen oxides, ozone-level-level ozone, particulate matter, da sulfur oxides) suna taka muhimmiyar rawa wajen kiyaye matakin methane da ozone a cikin yanayi. Yana samar da radicals na gajeren lokaci na hydroxyl wanda ke taimakawa rushe iskar gas mai tsawo kamar methane a cikin yanayi. Rufe abubuwan da ke da alaƙa da kulle-kulle na iskar nitrogen oxides yana nufin rage ikon sararin samaniya don tsarkake kansa daga methane. Sakamakon haka, rayuwar methane (a greenhouse iskar gas wanda ya fi tasiri wajen kama zafi a cikin yanayi fiye da CO2) a cikin yanayi ya karu kuma adadin methane a cikin sararin samaniya bai ragu ba tare da raguwar da ke da alaka da kullewa. Akasin haka, methane a cikin yanayi ya karu da sauri da kashi 0.3% a bara wanda ya fi kowane lokaci a cikin shekaru goma da suka gabata.
Rage yawan yawan iskar gas a cikin sararin samaniya abu ne mai mahimmanci kuma rage yawan iskar carbon shine mabuɗin don canjin yanayi tsare-tsaren ayyuka duk da haka, kamar yadda binciken ya nuna, gabaɗayan martanin abubuwan da ke tattare da yanayin yanayi ga canje-canjen hayaki yana da tasiri sosai ta hanyar abubuwa kamar ra'ayoyin sake zagayowar carbon zuwa CH.4 da CO2, baya matakan gurɓata yanayi, lokaci da wurin da hayaƙin ya canza, da yanayi martani kan ingancin iska, kamar gobarar daji da ozone yanayi hukunci. Saboda haka, barazanar na canjin yanayi kuma gurbacewar iska ba biyu ce daban ba amma matsalolin da ke da alaka da juna. Don haka, ya kamata a yi la'akari da kokarin rage hayaki mai gurbata muhalli tare da inganta ingancin iska tare.
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Source:
Dariya J., et al 2021. Sauye-sauyen al'umma saboda COVID-19 sun bayyana manyan hadaddun abubuwa da ra'ayoyi tsakanin sunadarai na yanayi da canjin yanayi. PNAS Nuwamba 16, 2021 118 (46) e2109481118; DOI: https://doi.org/10.1073/pnas.21094811188
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