Quantifying the carbon footprint reduction potential of lifestyle choices in Japan

Yosuke Shigetomi, Keiichiro Kanemoto, Yuki Yamamoto, Yasushi Kondo

研究成果: Article査読

抄録

Numerous studies have investigated the hotspots for reducing carbon emissions associated with household consumption, including reducing household carbon footprints (CFs) and greener lifestyle choices, such as living car-free, eating less meat, and having one less child. However, estimating the effect of each of these actions requires the simultaneous consideration of lifestyle choices and household characteristics that could also affect the household CF. Here, we quantify the reduction in household CFs for 25 factors associated with individual lifestyle choices or socioeconomic characteristics. This study linked approximately 42 000 microdata on consumption expenditure with the Japanese subnational 47 prefecture-level multi-regional input-output table, which are both the finest-scale data currently available. We improved the accuracy of household CF calculations by considering regional heterogeneity, and successfully estimated the magnitude of household CF reduction associated with individual lifestyle choices and socioeconomics. For example, it was found that moving from a cold region to a region with mild climate would have considerable potential for reducing the CO2 emissions of a household, all other factors being equal. In addition, a household residing in a house that meets the most recent energy standards emits 1150 kg less CO2 per year than if they reside in a house that meets previous energy standards. Ownership and use of durable goods also had the potential for reducing the CO2 emissions of a household; a normal-sized car, a personal computer, a compact car, and a bidet were associated with CO2 emissions of 922, 712, 421, and 345 kg per year, respectively. The findings therefore have important implications for climate change mitigation and policy measures associated with lifestyle.

本文言語English
論文番号064022
ジャーナルEnvironmental Research Letters
16
6
DOI
出版ステータスPublished - 2021 6

ASJC Scopus subject areas

  • 再生可能エネルギー、持続可能性、環境
  • 環境科学(全般)
  • 公衆衛生学、環境および労働衛生

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