一台の新車の製造過程でのCO2排出はたった2mの道路を作る際の排出と同等だ。だから電気自動車への乗り換えは望ましい。 [613682435]

?2BP(1000) · 2021/12/10(金) 11:22:28.25

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4809014/

2021/12/10(金) 11:24:02.48

Road construction uses up large amounts of raw materials that require a lot of energy to produce, including asphalt and cement. This energy means lots of greenhouse gas emissions

According to this study for a 4-lane road constructed in China, a 20 km length of road that is 28 m wide involved the release of 52.26 million kg of CO2. That's 2,613 kg per meter length of road which would make 5.2 t for 2m of road. Specifics of the project are given in the second quote below taken from the Description of the Project section of the paper.

#Ma et al., Greenhouse Gas Emissions from Asphalt Pavement Construction: A Case Study in China, 2016

2021/12/10(金) 11:48:47.20

？

2021/12/10(金) 11:56:27.95

道路が作られてからco2を排出するんか

2021/12/10(金) 12:00:21.72

EV用モーターやバッテリーの原材料の
レアアースやレアメタルの採掘、製錬、製造も含めているのか？

2021/12/10(金) 12:36:16.20

エビデヤンスがはっきりしない
これは眉唾

2021/12/10(金) 14:40:45.41

せやな