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<p>China has been experiencing rapidly growing agricultural non-CO<sub>2</sub> greenhouse gas (GHG) emissions and aged population owing to its vast population and enormous food demands. However, the response of non-CO<sub>2</sub> GHG emission to population aging-related food consumption is unclear. The food inspection survey reveals a significant difference in ruminant meat and staple food grain (typically rice) consumption between aged and young populations during the past decades. As a result, this dietary pattern in the aging population of 60+ reduce non-CO<sub>2</sub> GHG emissions from 1.0 Tg CO<sub>2</sub>eq in 2005 to 10.1 Tg CO<sub>2</sub>eq in 2020 by one order of magnitude. By 2050, the net total non-CO<sub>2</sub> GHG emissions from population aging-induced changes in food consumption will be further reduced by 34.5 Tg CO<sub>2</sub>eq under the shared socioeconomic pathways (SSPs), of which 86.8% is attributed to decreasing ruminant meat consumption (RMC), or 29.9 Tg CO<sub>2</sub>eq, accounting for 15.3% of total non-CO<sub>2</sub> GHG emission from China’s RMC in 2050.</p>

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Population aging mitigates food consumption-induced non-CO2 GHG emissions in China

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月16日

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  • Kaijie Chen,
  • Tao Huang,
  • Xiaodong Zhang,
  • Xinrui Liu,
  • Xiaohu Jian,
  • Hong Gao,
  • Shu Tao,
  • Junfeng Liu,
  • Yunchao Jiang,
  • Yuan Zhao,
  • Jianmin Ma

摘要

China has been experiencing rapidly growing agricultural non-CO2 greenhouse gas (GHG) emissions and aged population owing to its vast population and enormous food demands. However, the response of non-CO2 GHG emission to population aging-related food consumption is unclear. The food inspection survey reveals a significant difference in ruminant meat and staple food grain (typically rice) consumption between aged and young populations during the past decades. As a result, this dietary pattern in the aging population of 60+ reduce non-CO2 GHG emissions from 1.0 Tg CO2eq in 2005 to 10.1 Tg CO2eq in 2020 by one order of magnitude. By 2050, the net total non-CO2 GHG emissions from population aging-induced changes in food consumption will be further reduced by 34.5 Tg CO2eq under the shared socioeconomic pathways (SSPs), of which 86.8% is attributed to decreasing ruminant meat consumption (RMC), or 29.9 Tg CO2eq, accounting for 15.3% of total non-CO2 GHG emission from China’s RMC in 2050.