Tom qab tag nrho, qhov twg pollutes tshaj plaws? Lub tsheb hluav taws xob uas siv hluav taws xob tsim los ntawm kev hlawv cov roj fossil lossis lub tsheb roj av? Cov lus nug no tau yog cov pob txha ntawm kev sib cav ntawm cov kiv cua ntawm lub tsheb hluav taws xob thiab cov neeg tawm tswv yim txog kev sib tsoo, tab sis tam sim no muaj cov lus teb.
Raws li kev tshawb fawb luam tawm los ntawm Bloomberg, lub tsheb hluav taws xob tam sim no tso tawm qhov nruab nrab ntawm 40% CO2 tsawg dua li cov roj av uas siv hluav taws xob . Txawm li cas los xij, qhov sib txawv no txawv raws li lub teb chaws peb tab tom tham txog.
Yog li, txoj kev tshawb no muab piv txwv ntawm United Kingdom thiab Tuam Tshoj. Hauv UK, qhov sib txawv yog ntau dua 40%, tag nrho ua tsaug rau kev siv lub zog tauj dua tshiab. Hauv Suav teb, uas yog lub tebchaws uas feem ntau cov tsheb hluav taws xob tau muag, qhov sib txawv yog tsawg dua 40%, tag nrho vim tias cov thee tseem yog ib qho tseem ceeb ntawm kev tsim hluav taws xob.
Local emissions vs displaced emissions
Rau qhov kev suav no lawv suav tsis tau tsuas yog cov emissions thaum siv lub tsheb, tab sis kuj yog cov emissions uas tshwm sim thaum lub sij hawm tsim khoom. Tab sis nws ua rau koj xav. Lub tsheb fais fab txawm tias muaj CO2 emissions li cas thaum peb tsav nws? Zoo, qhov no yog qhov chaw emissions hauv zos thiab tshem tawm emissions tuaj rau hauv kev ua si.
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Thaum peb tsav tsheb nrog lub cav combustion sab hauv, nws muaj cov emissions hauv zos - uas yog, cov uas tuaj ncaj qha tawm ntawm cov yeeb nkab tawm -; ib qho hluav taws xob, txawm tias tsis emission CO2 thaum siv - nws tsis hlawv roj, yog li tsis muaj emissions ntawm txhua yam -, muaj peev xwm emit pa phem gases indirect, thaum peb xav txog lub hauv paus chiv keeb ntawm cov hluav taws xob nws xav tau.
Yog tias cov hluav taws xob uas nws siv yog tsim los ntawm cov fossil fuels, lub chaw tsim hluav taws xob yuav tsum tau tawm CO2. Qhov no yog vim li cas qhov sib txawv ntawm ob hom cav yog tam sim no tsuas yog 40%.
Colin McKerracher, Transport Analyst ntawm BNEFThaum lub tsheb combustion sab hauv tawm ntawm cov kab sib dhos, nws cov emissions ib km twb tau txhais lawm, nyob rau hauv cov ntaub ntawv ntawm trams no poob los ntawm ib xyoo mus rau xyoo raws li lub zog los ua huv.
Raws li cov kws tshawb fawb, qhov sib txawv yog rau qhov sib txawv kom loj hlob, raws li cov teb chaws xws li Tuam Tshoj pib txais cov khoom siv hluav taws xob tauj dua tshiab. Txawm li cas los xij, txawm tias muaj hluav taws xob los ntawm hluav taws xob hluav taws xob, lub tsheb hluav taws xob twb muaj peev xwm ua kom muaj kuab paug tsawg dua li lawv cov roj av sib npaug.
Raws li BloombergNEF txoj kev tshawb fawb, kev tsim kho thev naus laus zis yuav pab txo qis combustion engine emissions los ntawm 1.9% ib xyoos ib zaug los ntawm 2040, tab sis nyob rau hauv cov ntaub ntawv ntawm hluav taws xob engine, ua tsaug rau tag nrho cov, rau kev saws me nyuam los ntawm lub zog tauj dua tshiab, qhov kev tawg no yuav tsum nyob nruab nrab ntawm. 3% thiab 10% ib xyoos twg.
Source: Bloomberg