Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests
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.
id |
dig-cirad-fr-600161 |
---|---|
record_format |
koha |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
K10 - Production forestière P01 - Conservation de la nature et ressources foncières 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 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_28112 http://aims.fao.org/aos/agrovoc/c_28144 http://aims.fao.org/aos/agrovoc/c_1373987680230 http://aims.fao.org/aos/agrovoc/c_7537 http://aims.fao.org/aos/agrovoc/c_2128 http://aims.fao.org/aos/agrovoc/c_bea12d1e http://aims.fao.org/aos/agrovoc/c_ef82e42a http://aims.fao.org/aos/agrovoc/c_2f82b0a2 K10 - Production forestière P01 - Conservation de la nature et ressources foncières 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 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_28112 http://aims.fao.org/aos/agrovoc/c_28144 http://aims.fao.org/aos/agrovoc/c_1373987680230 http://aims.fao.org/aos/agrovoc/c_7537 http://aims.fao.org/aos/agrovoc/c_2128 http://aims.fao.org/aos/agrovoc/c_bea12d1e http://aims.fao.org/aos/agrovoc/c_ef82e42a http://aims.fao.org/aos/agrovoc/c_2f82b0a2 |
spellingShingle |
K10 - Production forestière P01 - Conservation de la nature et ressources foncières 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 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_28112 http://aims.fao.org/aos/agrovoc/c_28144 http://aims.fao.org/aos/agrovoc/c_1373987680230 http://aims.fao.org/aos/agrovoc/c_7537 http://aims.fao.org/aos/agrovoc/c_2128 http://aims.fao.org/aos/agrovoc/c_bea12d1e http://aims.fao.org/aos/agrovoc/c_ef82e42a http://aims.fao.org/aos/agrovoc/c_2f82b0a2 K10 - Production forestière P01 - Conservation de la nature et ressources foncières 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 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_28112 http://aims.fao.org/aos/agrovoc/c_28144 http://aims.fao.org/aos/agrovoc/c_1373987680230 http://aims.fao.org/aos/agrovoc/c_7537 http://aims.fao.org/aos/agrovoc/c_2128 http://aims.fao.org/aos/agrovoc/c_bea12d1e http://aims.fao.org/aos/agrovoc/c_ef82e42a http://aims.fao.org/aos/agrovoc/c_2f82b0a2 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., Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests |
description |
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. |
format |
article |
topic_facet |
K10 - Production forestière P01 - Conservation de la nature et ressources foncières 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 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_28112 http://aims.fao.org/aos/agrovoc/c_28144 http://aims.fao.org/aos/agrovoc/c_1373987680230 http://aims.fao.org/aos/agrovoc/c_7537 http://aims.fao.org/aos/agrovoc/c_2128 http://aims.fao.org/aos/agrovoc/c_bea12d1e http://aims.fao.org/aos/agrovoc/c_ef82e42a http://aims.fao.org/aos/agrovoc/c_2f82b0a2 |
author |
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., |
author_facet |
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., |
author_sort |
Rozendaal, Danaë M. A. |
title |
Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests |
title_short |
Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests |
title_full |
Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests |
title_fullStr |
Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests |
title_full_unstemmed |
Aboveground forest biomass varies across continents, ecological zones and successional stages: Refined IPCC default values for tropical and subtropical forests |
title_sort |
aboveground forest biomass varies across continents, ecological zones and successional stages: refined ipcc default values for tropical and subtropical forests |
url |
http://agritrop.cirad.fr/600161/ http://agritrop.cirad.fr/600161/1/Rozendaal_2022_Environ._Res._Lett._17_014047.pdf |
work_keys_str_mv |
AT rozendaaldanaema abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT requenasuarezdaniela abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT desyveronique abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT avitabilevalerio abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT cartersarah abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT adouyaocy abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT alvarezdavilaesteban abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT andersonteixeirakristina abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT araujomurakamialejandro abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT arroyoluzmila abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT barcabenjamin abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT bakertimothyr abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT birigazziluca abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT bongersfrans abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT branthommeanne abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT brienenroeljacobuswilhelmus abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT carreirasjoaomb abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT cazzollagattiroberto abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT cookpattonsusanc abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT decuypermathieu abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT devriesben abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT espejoandresb abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT feldpauschtedr abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT foxjulian abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT gamarrajaviergarciaperez abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT griscombronson abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT harrisnancy abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT heraultbruno abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT honoriocoronadoeuridicen abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT jonckheereinge abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT konaneric abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT leavittsaram abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT lewissimonl abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT lindselljeremy abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT kassindjajustin abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT nguessanannyestelle abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT marimonbeatrizschwantes abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT mitchardedwardta abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT monteagudoabel abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT morelalexandra abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT pekkarinenanssi abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT phillipsoliverl abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT poorterlourens abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT qielan abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT rutishauserervan abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT ryancaseym abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT santoromaurizio abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT silayodossantos abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT sistplinio abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests AT etal abovegroundforestbiomassvariesacrosscontinentsecologicalzonesandsuccessionalstagesrefinedipccdefaultvaluesfortropicalandsubtropicalforests |
_version_ |
1792500298100506624 |
spelling |
dig-cirad-fr-6001612024-01-29T19:05:51Z http://agritrop.cirad.fr/600161/ http://agritrop.cirad.fr/600161/ 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. Environmental Research Letters, 17 (1):014047, 15 p.https://doi.org/10.1088/1748-9326/ac45b3 <https://doi.org/10.1088/1748-9326/ac45b3> 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., eng 2022 Environmental Research Letters K10 - Production forestière P01 - Conservation de la nature et ressources foncières 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 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_28112 http://aims.fao.org/aos/agrovoc/c_28144 http://aims.fao.org/aos/agrovoc/c_1373987680230 http://aims.fao.org/aos/agrovoc/c_7537 http://aims.fao.org/aos/agrovoc/c_2128 http://aims.fao.org/aos/agrovoc/c_bea12d1e http://aims.fao.org/aos/agrovoc/c_ef82e42a http://aims.fao.org/aos/agrovoc/c_2f82b0a2 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. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/600161/1/Rozendaal_2022_Environ._Res._Lett._17_014047.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1088/1748-9326/ac45b3 10.1088/1748-9326/ac45b3 info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-9326/ac45b3 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1088/1748-9326/ac45b3 info:eu-repo/grantAgreement/EC/H2020/776810//(EU) Observation-based system for monitoring and verification of greenhouse gases/VERIFY info:eu-repo/grantAgreement/ERC/H2020/776810//(EU) Observation-based system for monitoring and verification of greenhouse gases/VERIFY |