The Global Carbon Council (GCC) has approved GCCM010: Methodology for Reduction of Methane Emission through Adjusted Water Management Practice in Rice Cultivation, further strengthening GCC’s agriculture sector methodologies and expanding pathways for high-integrity emission reductions from sustainable agricultural practices.
Rice cultivation remains one of the largest anthropogenic sources of methane emissions globally due to prolonged flooded conditions that create anaerobic soil environments conducive to methane generation. As countries and markets increasingly focus on reducing short-lived climate pollutants while strengthening food system resilience, sustainable rice cultivation practices are gaining importance within climate mitigation strategies.
GCCM010 introduces a scientifically robust framework for reducing methane emissions from rice cultivation through improved water management and rice cultivation practices while maintaining agricultural productivity, environmental integrity, and sustainable development outcomes.
Commenting on the approval of GCCM010, Dr. Yousef Alhorr, Founding Chairman of the Global Carbon Council, said:
“The approval of GCCM010 marks another important step in expanding high-integrity climate solutions for the agriculture sector. Rice cultivation is a significant source of methane emissions globally, and methodologies such as GCCM010 can help accelerate the adoption of more sustainable cultivation practices while supporting farmers, food security, and climate resilience. At GCC, we remain committed to developing scientifically robust and internationally aligned methodologies that enable scalable climate action and sustainable development.”
About GCCM010
The methodology applies to project activities that reduce methane emissions from rice cultivation through measures including:
- Transition from continuously flooded rice cultivation to intermittently flooded conditions.
- Adoption of Alternate Wetting and Drying (AWD) practices.
- Aerobic rice cultivation approaches.
- Transition from transplanted rice systems to Direct-Seeded Rice (DSR).
The methodology recognizes that these interventions reduce methane generation by interrupting anaerobic decomposition processes in rice fields while enabling more sustainable water management practices.
The methodology is applicable to irrigated rice fields equipped with controlled irrigation and drainage infrastructure, enabling project activities to establish and maintain appropriate flooding and drainage regimes throughout cultivation cycles.
At the same time, GCCM010 excludes upland, rainfed, deep-water rice cultivation, and non-irrigated lowland systems where water regimes cannot be effectively controlled, thereby ensuring methodological robustness and accurate emission accounting.
Strong Baseline and Monitoring Requirements
A key strength of GCCM010 is its rigorous baseline determination and monitoring framework.
The methodology requires historical assessment of cultivation practices using at least three years of field-level information, including irrigation regimes, fertilizer use, cultivation patterns, rice yield data, and land management practices.
The framework also introduces stratification approaches to group fields with similar cultivation patterns and biophysical conditions, improving the representativeness and precision of emission estimation across project areas.
To quantify emission reductions, GCCM010 provides two approaches:
Reference Field Approach
The methodology enables direct measurement of methane emissions using closed chamber monitoring techniques across representative baseline and project reference fields.
Simplified Approach
For eligible smaller-scale projects, the methodology allows the use of IPCC Tier 1 default emission factors and scaling approaches for emission reduction estimation.
The methodology also accounts for nitrous oxide (N₂O) emissions associated with fertilizer use and CO₂ emissions arising from land preparation activities where relevant, ensuring comprehensive greenhouse gas accounting.
Ensuring Environmental Integrity
GCCM010 incorporates multiple safeguards and integrity measures to support credible emission reductions and transparent implementation.
These include:
- Conservative baseline setting approaches.
- Uncertainty deductions where applicable.
- Prevention of double counting through clear land demarcation and contractual safeguards.
- Mandatory farmer training and technical support.
- Alignment with IPCC Guidelines and internationally recognized methodologies.
The methodology also includes provisions to ensure that project implementation does not result in material declines in rice yield, inappropriate changes in cultivation intensity, or adverse impacts on soil organic carbon.
Supporting Sustainable Agriculture and Climate Action
Sustainable Agriculture continues to play a critical role in global climate mitigation efforts, particularly in regions where rice cultivation is a major source of methane emissions and an important contributor to livelihoods and food security.
By enabling high-integrity emission reductions from sustainable rice cultivation practices, GCCM010 aims to support climate finance mobilization for agriculture sector transformation while encouraging improved water management and resource efficiency.
The methodology further expands GCC’s portfolio of sectoral methodologies supporting climate mitigation and sustainable development across agriculture and land-use systems.
Advancing GCC’s Methodology Framework
The approval of GCCM010 reflects GCC’s continued commitment to developing scientifically robust, transparent, and internationally aligned methodologies capable of supporting evolving carbon market requirements.
As international carbon markets continue to place increasing emphasis on integrity, transparency, and measurable climate impact, methodologies such as GCCM010 are expected to play an important role in enabling scalable ghg mitigation activities in agricultural sector while supporting sustainable development and resilient food systems.
