Long-term carbon sink in Borneo's forests halted by drought and vulnerable to edge effects

Qie Lan, Lewis Simon L., Sullivan Martin J. P., Lopez-Gonzalez Gabriela, Pickavance Georgia C., Sunderland Terry C.H., Ashton Peter, Hubau Wannes, Abu Salim Kamariah, Aiba Shin-Ichiro, Banin Lindsay F., Berry Nicholas, Brearley Francis Q., Burslem David F. R. P, Dančák Martin, Davies Stuart J., Fredriksson Gabriella, Hamer Keith C., Hédl Radim, Khoon Kho Lip, Kitayama Kanehiro, Krisnawati Haruni, Lhota Stanislav, Malhi Yadvinder, Maycock Colin, Metali Faizah, Mirmanto Edi, Nagy Laszlo, Nilus Reuben, Ong Robert, Pendry Colin A., Poulsen Axel Dalberg, Primack Richard B., Rutishauser Ervan, Samsoedin Ismayadi, Saragih Bernaulus, Sist Plinio, et al.. 2017. Long-term carbon sink in Borneo's forests halted by drought and vulnerable to edge effects. Nature Communications, 8 (1):1966, 11 p.

https://doi.org/10.1038/s41467-017-01997-0

Article de revue ; Article de recherche ; Article de revue à facteur d'impact

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Quartile : Outlier, Sujet : MULTIDISCIPLINARY SCIENCES

Note générale : Corrigendum paru dans Nature Communications (2018)vol9:article number 342, 2 p. https://doi.org/10.1038/s41467-018-02920-x

Résumé : Less than half of anthropogenic carbon dioxide emissions remain in the atmosphere. While carbon balance models imply large carbon uptake in tropical forests, direct on-the-ground observations are still lacking in Southeast Asia. Here, using long-term plot monitoring records of up to half a century, we find that intact forests in Borneo gained 0.43 Mg C ha−1 per year (95% CI 0.14–0.72, mean period 1988–2010) in above-ground live biomass carbon. These results closely match those from African and Amazonian plot networks, suggesting that the world's remaining intact tropical forests are now en masse out-of-equilibrium. Although both pan-tropical and long-term, the sink in remaining intact forests appears vulnerable to climate and land use changes. Across Borneo the 1997–1998 El Niño drought temporarily halted the carbon sink by increasing tree mortality, while fragmentation persistently offset the sink and turned many edge-affected forests into a carbon source to the atmosphere.

Mots-clés Agrovoc : forêt tropicale, biomasse, sécheresse, émission atmosphérique, forêt, séquestration du carbone, puits de carbone, carbone, changement climatique, forêt tropicale humide

Mots-clés géographiques Agrovoc : Bornéo, Asie du Sud-Est

Mots-clés libres : Climate-change ecology, Climate-change impacts, Forest ecology

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