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Related Experiment Video

Updated: Oct 19, 2025

Design and Use of a Full Flow Sampling System FFS for the Quantification of Methane Emissions
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Agricultural methane emissions and the potential formitigation.

Pete Smith1, Dave Reay2, Jo Smith1

  • 1Institute of Biological and Environmental Sciences, University of Aberdeen, 23 St Machar Drive, Aberdeen AB24 3UU, UK.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|September 27, 2021
PubMed
Summary
This summary is machine-generated.

Agriculture is a major source of methane (CH4) emissions. Reducing agricultural methane through improved practices and dietary shifts offers significant potential to mitigate climate change.

Keywords:
agricultureemissionsgreenhouse gasmethanemitigation

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Area of Science:

  • Environmental Science
  • Agricultural Science
  • Climate Change Research

Background:

  • Agriculture is the largest anthropogenic source of methane (CH4) emissions, contributing 145 Tg CH4 y-1 in 2017.
  • Key agricultural sources include enteric fermentation, manure management, rice cultivation, and residue burning.

Purpose of the Study:

  • To assess the mitigation potential of methane (CH4) emissions from various agricultural sources.
  • To highlight the importance of reducing all greenhouse gases (GHGs), including methane, for urgent climate change mitigation.

Main Methods:

  • Analysis of bottom-up mitigation potentials for rice management, enteric fermentation, manure management, and residue burning.
  • Review of system-wide studies on enteric fermentation and rice management mitigation.
  • Inclusion of biogas potential and demand-side interventions (dietary shifts, food waste reduction).

Main Results:

  • Significant CH4 mitigation potentials identified: rice management (10.6 Tg CH4 y-1), enteric fermentation (10 Tg CH4 y-1), manure management (2 Tg CH4 y-1), and residue burning (1 Tg CH4 y-1).
  • System-wide studies suggest higher potentials for enteric fermentation (4.8–47.2 Tg CH4 y-1) and rice management (4–36 Tg CH4 y-1).
  • Demand-side interventions could reduce emissions by over 50 Tg CH4 y-1.

Conclusions:

  • Reducing agricultural methane is crucial for climate change mitigation due to its significant contribution and short-lived warming impact.
  • A comprehensive approach, including supply-side (biogas, improved practices) and demand-side measures, is necessary to effectively reduce methane emissions.