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Agricultural industry

Non-CO2 Greenhouse Gas Emissions from Global Crop-Livestock Systems Pose Challenges to Climate Mitigation

Strategic Insights

— 1 min read

Research has found that non-carbon dioxide greenhouse gas (non-CO2 GHG) emissions from global crop-livestock systems, primarily driven by enteric fermentation and manure-related emissions, pose significant challenges to climate mitigation. Identifying emission hotspots and simulating future mitigation potential are crucial for achieving agricultural carbon neutrality. The study used a comprehensive dataset spanning 138 countries (1961-2020) and found that global non-CO2 GHG emissions from crop-livestock systems increased by 61.9% from 2696.5 to 4365.0 Mt CO2-eq. yr-1 from 1961 to 2020.

Key Takeaways:

  • Global non-CO2 GHG emissions from crop-livestock systems increased by 61.9% from 2696.5 to 4365.0 Mt CO2-eq. yr-1 from 1961 to 2020.
  • India, Brazil, China, and the United States accounted for about 40% of total emissions in 2020.
  • Developed countries like the United States decoupled non-CO2 GHG emissions from economic growth around 1985 at approximately $10,000 per-capita GDP.
  • Developing countries like China showed significant decoupling around 1990 at approximately $3000 per-capita GDP.
  • Ambitious scenarios (BMPs-50%) could reduce global emissions by 3.2-6.7 Gt CO2-eq. yr-1 by 2060.
  • Major contributions to emission reduction would come from India (671.3 Mt CO2-eq. yr-1), Brazil (494.2 Mt CO2-eq. yr-1), China (486.1 Mt CO2-eq. yr-1), and the USA (238.8 Mt CO2-eq. yr-1).

Statistics:

  • Global non-CO2 GHG emissions from crop-livestock systems increased by 61.9% from 1961 to 2020.
  • India contributed 40% of total emissions in 2020.
  • Developed countries like the United States decoupled non-CO2 GHG emissions from economic growth around 1985 at approximately $10,000 per-capita GDP.
  • Decoupling in developing countries like China was evident around 1990 at approximately $3000 per-capita GDP.
  • Ambitious scenarios (BMPs-50%) could reduce global emissions by 3.2-6.7 Gt CO2-eq. yr-1 by 2060.

Sources:

  • Livestock rearing as a key component of mitigation efforts for non-CO2 greenhouse gas emissions in global crop-livestock system. Resources, Environment and Sustainability, 2025, 21():100248. (Elsevier)
  • Study Findings from Chinese Academy of Agricultural Sciences (CAAS) Provide New Insights into Livestock (Livestock rearing as a key component of mitigation efforts for non-CO2 greenhouse gas emissions in global crop-livestock system). Global Warming Focus. September 8, 2025; p 380.

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