Forest Carbon Accounting in the Greenhouse Gas Protocol
Event Summary
This webinar provides a critical look at the issue of forest carbon accounting from the perspective of independent scientists involved in a recent Greenhouse Gas Protocol standard-setting process. All panelists participated in the Protocol’s forest carbon deliberations, either as appointed members of a technical working group or as current or past members of the Protocol’s decision-making Board. As documented in recent media stories, however, the Protocol’s treatment of scientific information was controversial and ultimately led to the resignation of two panelists.
We summarize competing proposals for forest carbon accounting rules and assess their scientific integrity. Notably, we explain why an industry proposal to adopt the “managed land proxy” method for forest carbon accounting would make emissions-intensive products and companies appear carbon negative, encourage increased wood harvesting, and undermine confidence in climate reporting. We also explain why an alternative method, known as “activity-based” accounting, is consistent with standard scientific approaches to quantifying the effects of forest management and forest carbon crediting programs on the climate. Finally, we also discuss procedural irregularities in the Protocol’s decision-making process and their relationship to the development of ISO 13391 product standards, which effectively implement the managed land proxy proposal and which are under consideration for jointly issued Protocol-ISO standards.
Our goal is to inform public stakeholders about the merits and stakes of this debate as well as to encourage comments to the Greenhouse Gas Protocol, which is accepting public feedback through February 1, 2027.
Greenhouse Gas Protocol Materials
- Greenhouse Gas Protocol, Feedback opportunities (comments due February 1, 2027)
- Greenhouse Gas Protocol, Forest Carbon Accounting Request for information (June 30, 2026)
- Independent Standards Board, Summary of ISB deliberations (June 30, 2026)
- Managed Land Proxy “Plus” proposal (May 7, 2025)
- Managed Land Proxy “Plus” explanatory memo (May 30, 2025)
- Managed Land Proxy “Plus” response memo (June 13, 2025)
- Activity-based accounting proposal (April 25, 2025)
- Activity-based accounting explanatory memo (June 2025)
- Activity-based accounting response memo (June 2025)
Additional Resources
- Emily Pontecorvo, Leading Climate Standards Group Fraught With Secrecy and Bias, Whistleblowers Say, Heatmap News (Apr. 21, 2026)
- Danny Cullenward, Governing the Greenhouse Gas Protocol, Kleinman Center for Energy Policy (April 22, 2026)
- Andy Stone, From Corporate Standard to Climate Policy: The Greenhouse Gas Protocol, Energy Policy Now podcast, Kleinman Center for Energy Policy (May 5, 2026)
- Danny Cullenward, Independent Standards Board resignation letter (June 8, 2026)
- Olivia Raimonde, Dispute Over Counting Forest Carbon Roils Global Standard-Setter, Bloomberg (August 13, 2026)
- Luke Barratt, Timber industry’s influence risks derailing global carbon calculations, scientists warn, Source Material (August 13, 2026)
Danny Cullenward
Shleifer Senior FellowDanny Cullenward is a Shleifer Senior Fellow at the Kleinman Center. He is an economist and lawyer focused on the scientific integrity of climate policy.
Miguel Brandão
Professor of Environmental EngineeringMiguel Brandão is a Professor of Environmental Engineering at Riga Technical University. His research focuses on consequential life cycle assessment and carbon accounting for products and value chains, including wood products and bioenergy.
Charles Canham
Forest ecologistCharles Canham is a forest ecologist at the Cary Institute of Ecosystem Studies, where he studies the dynamics of forest ecosystems and how they respond to a wide range of human impacts.
Jiaxin Chen
Mitigation and Adaptation Research ScientistJiaxin Chen is a Mitigation and Adaptation Research Scientist at the Ontario Forest Research Institute. He is an expert on forest carbon accounting and wood product life-cycle analysis.
Kate Dooley
Senior Research FellowKate Dooley is a Senior Research Fellow at the University of Melbourne, where she focuses on the intersection of carbon accounting, forest governance, and climate policy.
Heather Keith
Principal Research FellowHeather Keith is a Principal Research Fellow at the Climate Action Beacon at Griffith University. She is a forest ecologist with expertise in forest carbon accounting, including field-based measurements.
Tim Searchinger
Senior Research ScholarTim Searchinger is a Senior Research Scholar at Princeton University’s School of Public and International Affairs. His research focuses on the challenge of supplying food and fiber to meet growing human demands while reducing the environmental consequences of agriculture and forestry.