发布时间：2022-02-22
发达国家老龄化面临的碳减排挑战
讲座时间：2022年3月1日19:00-21:00
讲座地点：腾讯会议：587-396-601 会议密码：1895
主讲人：郑赫然
01 主讲人介绍
郑赫然博士，挪威科技技术大学（NTNU）产业生态学研究组博士后，合作导师为Edgar Hertwich与Daniel Moran，博士毕业于英国东安格利亚大学，研究内容覆盖产业生态学主题方法等多个方面，主要关注于区域及城市尺度投入产出表编制、区域产业链环境影响分析、投入产出分析与方法、消费环境影响等多学科交叉研究。研究成果近年来发表在One Earth, Nature Climate Change, Journal of Industrial Ecology等国际知名期刊。
Dr. Heran Zheng, postdoctoral Research Fellow in Industrial Ecology of NTNU, co-tutors Edgar Hertwich and Daniel Moran. He graduated from the University of East Anglia, and his research covers many aspects of the thematic approach to industrial ecology. He mainly focuses on the cross-disciplinary research on the compilation of input-output tables at the regional and urban scales, the environmental impact of regional industrial chains, the analysis and methods of input-output, and the environmental impact of consumption. Research results have been published in internationally renowned journals such as One Earth, Nature Climate Change, Journal of Industrial Ecology in recent years.
02 讲座内容
发达国家的人口正在老龄化，然而，老年人消费对全球碳减排的影响却鲜为人知。我们发现老年人群在过去十年中在推动温室气体排放方面发挥了主导作用，并且正在成为最大的贡献者。研究考虑了32个发达国家各年龄组家庭消费的温室气体(GHG)足迹，结果发现，2005年至2015年间，老年人对国家总消费排放的贡献从25.2%增加到32.7%。美国和澳大利亚的老年人人均足迹最高，是西方平均水平的两倍。这一趋势主要是由于老年人支出模式的变化。老年人碳足迹的增加可能会推动国内生产，但对国际碳泄漏的影响有限。人口变化给当地减缓带来了更多挑战，需要更深入的公共减缓努力。
Populations in developed countries are aging. However, the impact of the senior citizens' consumption on global carbon mitigation is poorly understood. Here, we find that the senior-age group has played a leading role in driving up GHG emissions in the past decade and are on the way to becoming the largest contributor. Considering the greenhouse gas (GHG) footprints of household consumption across age groups in 32 developed countries, the senior contribution to national total consumption-based emissions increased from 25.2% to 32.7% between 2005 and 2015. Seniors in the US and Australia have the highest per capita footprints, twice the Western average. The trend is mainly due to changes in expenditure patterns of seniors. The increasing carbon footprints of senior citizens are likely to drive domestic production, yet have limited effects on international carbon leakage. The demographic change poses more challenges in local mitigation and calls for deeper public mitigation efforts.
