Los ntawm 2050, yuav muaj txog 12 billion tons ntawm cov pov tseg yas hauv ntiaj teb

Tib neeg tau tsim 8.3 billion tons ntawm yas.Los ntawm 2050, yuav muaj txog 12 billion tons ntawm cov pov tseg yas hauv ntiaj teb.

Raws li kev tshawb fawb hauv Journal Progress in Science, txij li thaum xyoo 1950s, 8.3 billion tons ntawm plastics tau tsim los ntawm tib neeg, feem ntau tau dhau los ua pov tseg, uas tsis tuaj yeem tsis quav ntsej vim tias lawv tau muab tso rau hauv qhov chaw pov tseg lossis tawg mus rau hauv ntuj. ib puag ncig.

Pab pawg, coj los ntawm cov kws tshawb fawb los ntawm University of Georgia, University of California, Santa Barbara thiab Marine Education Association, thawj zaug tshuaj xyuas kev tsim khoom, siv thiab txoj hmoo kawg ntawm txhua yam khoom yas thoob ntiaj teb.Cov kws tshawb fawb tau sau cov ntaub ntawv pov thawj ntawm kev tsim ntau yam kev lag luam resins, fibers thiab additives, thiab sib xyaw cov ntaub ntawv raws li hom thiab siv cov khoom.

Ntau lab tons ntawm cov yas nkag mus rau hauv dej hiav txwv txhua xyoo, ua rau muaj kuab paug hauv hiav txwv, littering ntug hiav txwv dej thiab cov tsiaj qus ua rau muaj kev phom sij.Cov khoom yas tau pom nyob rau hauv cov av, nyob rau hauv cov huab cua thiab txawm nyob rau hauv lub feem ntau tej thaj chaw deb cheeb tsam ntawm lub ntiaj teb, xws li Antarctica.Microplastics kuj tau noj los ntawm cov ntses thiab lwm yam dej hiav txwv, uas lawv nkag mus rau hauv cov khoom noj.

Cov ntaub ntawv qhia tau hais tias thoob ntiaj teb cov khoom yas yog 2 lab tons hauv xyoo 1950 thiab tau nce mus rau 400 lab tons hauv xyoo 2015, uas tshaj li cov khoom siv uas tib neeg tsim tshwj tsis yog cov cement thiab hlau.

Tsuas yog 9% ntawm cov khoom siv yas pov tseg tau rov ua dua tshiab, 12% yog incinerated, thiab 79% ntxiv yog faus tob rau hauv qhov chaw pov tseg lossis khaws cia rau hauv ib puag ncig ntuj.Cov pace ntawm cov yas ntau lawm qhia tias tsis muaj cov cim ntawm kev qeeb.Raws li cov qauv tam sim no, yuav muaj txog 12 billion tons ntawm cov pov tseg yas hauv ntiaj teb los ntawm 2050.

Pab neeg no pom tias tsis muaj cov mos txwv nyiaj rau kev txo cov pa phem thoob ntiaj teb. Xwb, xav tau kev hloov pauv thoob plaws tag nrho cov khoom siv, lawv tau hais tias, los ntawm kev tsim cov yas, mus rau kev siv ua ntej (paub tias dej ntws) thiab tom qab siv (recycling thiab rov siv dua) kom tsis txhob kis cov pa phem yas mus rau ib puag ncig.