Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests

Rozendaal Danaë M. A., Requena Suarez Daniela, De Sy Véronique, Avitabile Valerio, Carter Sarah, Adou Yao C.Y., Álvarez-Dávila Esteban, Anderson-Teixeira Kristina, Araujo-Murakami Alejandro, Arroyo Luzmila, Barca Benjamin, Baker Timothy R., Birigazzi Luca, Bongers Frans, Branthomme Anne, Brienen Roel Jacobus Wilhelmus, Carreiras João M.B., Cazzolla Gatti Roberto, Cook‐Patton Susan C., Decuyper Mathieu, DeVries Ben, Espejo Andres B., Feldpausch Ted R., Fox Julian, Gamarra Javier Garcia Perez, Griscom Bronson, Harris Nancy, Herault Bruno, Honorio Coronado Eurídice N., Jonckheere Inge, Konan Eric, Leavitt Sara M., Lewis Simon L., Lindsell Jeremy, Kassi N'dja Justin, N'Guessan Anny Estelle, Marimon Beatriz Schwantes, Mitchard Edward T.A., Monteagudo Abel, Morel Alexandra, Pekkarinen Anssi, Phillips Oliver L., Poorter Lourens, Qie Lan, Rutishauser Ervan, Ryan Casey M., Santoro Maurizio, Silayo Dos Santos, Sist Plinio, et al.. 2022. Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests. Environmental Research Letters, 17 (1):014047, 15 p.

Résumé : For monitoring and reporting forest carbon stocks and fluxes, many countries in the tropics and subtropics rely on default values of forest aboveground biomass (AGB) from the Intergovernmental Panel on Climate Change (IPCC) guidelines for National Greenhouse Gas (GHG) Inventories. Default IPCC forest AGB values originated from 2006, and are relatively crude estimates of average values per continent and ecological zone. The 2006 default values were based on limited plot data available at the time, methods for their derivation were not fully clear, and no distinction between successional stages was made. As part of the 2019 Refinement to the 2006 IPCC Guidelines for GHG Inventories, we updated the default AGB values for tropical and subtropical forests based on AGB data from >25 000 plots in natural forests and a global AGB map where no plot data were available. We calculated refined AGB default values per continent, ecological zone, and successional stage, and provided a measure of uncertainty. AGB in tropical and subtropical forests varies by an order of magnitude across continents, ecological zones, and successional stage. Our refined default values generally reflect the climatic gradients in the tropics, with more AGB in wetter areas. AGB is generally higher in old-growth than in secondary forests, and higher in older secondary (regrowth >20 years old and degraded/logged forests) than in young secondary forests (⩽20 years old). While refined default values for tropical old-growth forest are largely similar to the previous 2006 default values, the new default values are 4.0–7.7-fold lower for young secondary forests. Thus, the refined values will strongly alter estimated carbon stocks and fluxes, and emphasize the critical importance of old-growth forest conservation. We provide a reproducible approach to facilitate future refinements and encourage targeted efforts to establish permanent plots in areas with data gaps.

Mots-clés Agrovoc : forêt tropicale, forêt primaire, forêt secondaire, biomasse aérienne des arbres, enquête, collecte de données, suivi et évaluation, Objectif 13 Mesures relatives à la lutte contre les changements climatique, carbone organique

Mots-clés complémentaires : Intergovernmental Panel on Climate Change (IPCC) / Groupe d’Experts Intergouvernemental sur l’Evolution du Climat (GIEC)

Mots-clés libres : Tropical and subtropical forests, Aboveground biomass, IPCC, Secondary and old-growth forests, Forest plots, Monitoring

Classification Agris : K10 - Production forestière
P01 - Conservation de la nature et ressources foncières

Champ stratégique Cirad : CTS 6 (2019-) - Changement climatique

Agences de financement européennes : European Commission, European Research Council

Programme de financement européen : H2020

Projets sur financement : (EU) Observation-based system for monitoring and verification of greenhouse gases

Auteurs et affiliations

• Rozendaal Danaë M. A., Wageningen University and Research Centre (NLD) - auteur correspondant
• Requena Suarez Daniela, Wageningen University and Research Centre (NLD)
• De Sy Véronique, Wageningen University and Research Centre (NLD)
• Avitabile Valerio, European Commission-Joint Research Centre (ITA)
• Carter Sarah, Wageningen University and Research Centre (NLD)
• Adou Yao C.Y., UFHB (CIV)
• Álvarez-Dávila Esteban, Universidad Nacional Abierta y a Distancia (COL)
• Anderson-Teixeira Kristina, Smithsonian Conservation Biology Institute (USA)
• Araujo-Murakami Alejandro, Museo de Historia Natural Noel Kempff Mercado (BOL)
• Arroyo Luzmila, UAGRM (BOL)
• Barca Benjamin, NatureMetrics (GBR)
• Baker Timothy R., University of Leeds (GBR)
• Birigazzi Luca, FAO (ITA)
• Bongers Frans, Wageningen University (NLD)
• Branthomme Anne, FA0 (ITA)
• Brienen Roel Jacobus Wilhelmus, University of Leeds (GBR)
• Carreiras João M.B., University of Sheffield (GBR)
• Cazzolla Gatti Roberto, Tomsk State University (RUS)
• Cook‐Patton Susan C., TNC (USA)
• Decuyper Mathieu, Wageningen University and Research Centre (NLD)
• DeVries Ben, University of Guelph (CAN)
• Espejo Andres B., The World Bank (USA)
• Feldpausch Ted R., University of Exeter (GBR)
• Fox Julian, FAO (ITA)
• Gamarra Javier Garcia Perez, FAO (ITA)
• Griscom Bronson, Conservation International (USA)
• Harris Nancy, WRI (USA)
• Herault Bruno, CIRAD-ES-UPR Forêts et sociétés (CIV) ORCID: 0000-0002-6950-7286
• Honorio Coronado Eurídice N., IIAP (PER)
• Jonckheere Inge, FAO (ITA)
• Konan Eric
• Leavitt Sara M., TNC (USA)
• Lewis Simon L., University of Leeds (GBR)
• Lindsell Jeremy, RSPB (GBR)
• Kassi N'dja Justin, UFHB (CIV)
• N'Guessan Anny Estelle, UFHB (CIV)
• Marimon Beatriz Schwantes, Universidade de Mato Grosso (BRA)
• Mitchard Edward T.A., University of Edinburgh (GBR)
• Monteagudo Abel, Jardin Botanico de Missouri (PER)
• Morel Alexandra, University of Dundee (GBR)
• Pekkarinen Anssi, FAO (ITA)
• Phillips Oliver L., University of Leeds (GBR)
• Poorter Lourens, Wageningen University (NLD)
• Qie Lan, University of Lincoln (GBR)
• Rutishauser Ervan, Smithsonian Tropical Research Institute (PAN)
• Ryan Casey M., University of Edinburgh (GBR)
• Santoro Maurizio, Gamma Remote Sensing (CHE)
• Silayo Dos Santos, Tanzania Forestry Research Institute (TZA)
• Sist Plinio, CIRAD-ES-UPR Forêts et sociétés (FRA)
• et al.

Source : Cirad-Agritrop (https://agritrop.cirad.fr/600161/)

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