Quantifying the carbon footprint reduction potential of lifestyle choices in Japan
Quantifying the carbon footprint reduction potential of lifestyle choices in Japan
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DOI：
10.1088/1748-9326/abfc07
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发表时间：
2021-05
影响因子：
6.7
通讯作者：
Yosuke Shigetomi;Keiichiro Kanemoto;Yuki Yamamoto;Y. Kondo
中科院分区：
文献类型：
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作者：
Yosuke Shigetomi;Keiichiro Kanemoto;Yuki Yamamoto;Y. Kondo
许多研究调查了与家庭消费相关的减少碳排放的热点，包括减少家庭碳足迹(CF)和更绿色的生活方式选择，如无车生活、少吃肉和少生一个孩子。然而，估计这些行动的影响需要同时考虑生活方式选择和家庭特征，这也可能影响家庭现金流量。在这里，我们量化了与个人生活方式选择或社会经济特征相关的25个因素的家庭CFS的减少。这项研究将大约42000个关于消费支出的微观数据与日本地方47个县一级多地区投入产出表联系起来，这两个表都是目前可用的最精细的规模数据。我们通过考虑地区异质性提高了家庭现金流率计算的准确性，并成功地估计了与个人生活方式选择和社会经济相关的家庭现金流率减少的幅度。例如，研究发现，在所有其他因素相同的情况下，从寒冷地区搬到气候温和的地区将有相当大的潜力减少家庭的二氧化碳排放。此外，居住在符合最新能源标准的房屋中的家庭每年排放的二氧化碳比居住在符合以前能源标准的房屋中的家庭每年少排放1150公斤二氧化碳。拥有和使用耐用品也有可能减少家庭的二氧化碳排放；一辆普通大小的汽车、一台个人电脑、一辆紧凑型汽车和一个坐浴盆每年分别产生922、712、421和345公斤的二氧化碳排放量。因此，这些发现对减缓气候变化和采取与生活方式相关的政策措施具有重要意义。
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.