Kev nkag siab tshiab rau Marine Microplastic Pollution 

Kev tshuaj xyuas cov ntaub ntawv tau los ntawm cov qauv dej hiav txwv tau sau los ntawm ntau qhov chaw thaum lub sijhawm 60,000km kev sib tw caij nkoj thoob ntiaj teb ntev, Dej Hiav Txwv Kev Sib Tw 2022-23 tau nthuav tawm cov kev nkag siab tshiab rau hauv kev faib khoom, kev xav tau thiab qhov chaw ntawm marine microplastics.  

Microplastics ntes nyob rau hauv cov qauv txawv ntawm 0.03 millimeters mus rau 4.6 millimeters. Microplastic hais me me li 0.03 millimeters tuaj yeem kuaj xyuas cov txheej txheem ua kom zoo. Raws li qhov tshwm sim, muaj cov microplastics siab: qhov nruab nrab, 4,789 ib cubic meter dej tau pom.  

Qhov siab tshaj plaws (26,334) tau pom nyob ze rau South Africa, tom qab ntawd los ntawm ntug dej hiav txwv Askiv ze rau Brest, Fabkis (17,184), tom qab ntawd lwm qhov chaw ze rau South Africa (14,976) ua raws li Balearic Hiav Txwv (14,970) thiab hauv North Sea offshore Denmark (14,457). Yog li, peb ntawm lub ntiaj teb sab saum toj tsib hotspots rau marine microplastic pa phem nyob rau hauv cov teb chaws Europe. Kev ua haujlwm siab ntawm tib neeg hauv cheeb tsam suav nrog ntau dua ntawm microplastics hauv dej nyob ib puag ncig Europe, Brazil thiab South Africa. Txawm li cas los xij, yog vim li cas tom qab pom muaj ntau dua nyob rau hauv Dej Hiav Txwv Yav Qab Teb tsis paub. Nws tseem tsis tau paub meej tias cov microplastics mus ntxiv rau sab qab teb los ntawm Dej Hiav Txwv Southern mus rau Antarctica.  

Txoj kev tshawb no kuj tau txiav txim siab hom khoom yas uas microplastics los ntawm. Nws tau pom tias, qhov nruab nrab, 71% ntawm cov microplastics hauv cov qauv yog microfibers, los ntawm cov ntaub ntawv xws li polyester, uas tau tso rau hauv ib puag ncig los ntawm cov tshuab ntxhua khaub ncaws (los ntawm cov dej khib nyiab), tshuab ziab khaub ncaws (hauv huab cua), ncaj qha los ntawm khaub ncaws, degradation ntawm textiles littered nyob rau hauv ib puag ncig thiab los ntawm pov tseg nuv ntses iav. 

Txoj kev tshawb no tseem ceeb vim nws ntsuas cov khoom me me microplastic, me me li 0.03 millimeters, thawj zaug. Nws kuj tau txheeb xyuas qhov chaw ntawm keeb kwm ntawm microplastic hais nyob rau hauv dej hiav txwv.  

Cov microplastics tau pom nyob rau hauv dav hauv cov tsiaj hiav txwv, los ntawm plankton mus rau whales. Hmoov tsis zoo, lawv kuj nrhiav lawv txoj hauv kev rau tib neeg los ntawm cov khoom noj khoom haus.  

*** 

References:  

  1. National Oceanography Center (UK). Xov xwm - 70% ntawm dej hiav txwv microplastics yog hom muaj nyob rau hauv khaub ncaws, textiles & nuv ntses iav - thiab cov teb chaws Europe yog hotspot. Tshaj tawm: 4 Kaum Ob Hlis 2024. Muaj nyob ntawm https://noc.ac.uk/news/70-ocean-microplastics-are-type-found-clothes-textiles-fishing-gear-europe-hotspot  

*** 

Tshooj cai  

*** 

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