Carbon storage potential in degraded forests of Kalimantan, Indonesia

Ferraz Antonio, Saatchi Sassan, Xu Liang, Hagen Stephen, Chave Jérôme, Yu Yifan, Meyer Victoria, Garcia Mariano, Silva Carlos, Roswintiart Orbita, Samboko Ari, Sist Plinio, Walker Sarah, Pearson Timothy R.H., Wijaya Arief, Sullivan Franklin B., Rutishauser Ervan, Hoekman Dirk, Ganguly Sangram. 2018. Carbon storage potential in degraded forests of Kalimantan, Indonesia. Environmental Research Letters, 13 (9):095001, 12 p.

Quartile : Q1, Sujet : METEOROLOGY & ATMOSPHERIC SCIENCES / Quartile : Q1, Sujet : ENVIRONMENTAL SCIENCES

Résumé : The forests of Kalimantan are under severe pressure from extensive land use activities dominated by logging, palm oil plantations, and peatland fires. To implement the forest moratorium for mitigating greenhouse gas emissions, Indonesia's government requires information on the carbon stored in forests, including intact, degraded, secondary, and peat swamp forests. We developed a hybrid approach of producing a wall-to-wall map of the aboveground biomass (AGB) of intact and degraded forests of Kalimantan at 1 ha grid cells by combining field inventory plots, airborne lidar samples, and satellite radar and optical imagery. More than 110 000 ha of lidar data were acquired to systematically capture variations of forest structure and more than 104 field plots to develop lidar-biomass models. The lidar measurements were converted into biomass using models developed for 66 439 ha of drylands and 44 250 ha of wetland forests. By combining the AGB map with the national land cover map, we found that 22.3 Mha (106 ha) of forest remain on drylands ranging in biomass from 357.2 ± 12.3 Mgha−1 in relatively intact forests to 134.2 ± 6.1 Mgha−1 in severely degraded forests. The remaining peat swamp forests are heterogeneous in coverage and degradation level, extending over 3.62 Mha and having an average AGB of 211.8 ± 12.7 Mgha−1. Emission factors calculated from aboveground biomass only suggest that the carbon storage potential of more than 15 Mha of degraded and secondary dryland forests will be about 1.1 PgC.

Mots-clés Agrovoc : dégradation des forêts, séquestration du carbone, biomasse aérienne des arbres, cartographie des fonctions de la forêt, cartographie de l'occupation du sol

Mots-clés géographiques Agrovoc : Indonésie

Mots-clés libres : Carbon, Aboveground biomass mapping, Forest degradation, Peat swamp forests, Airborne lidar, Kalimantan, Indonesia

Classification Agris : K70 - Dégâts causés aux forêts et leur protection
K01 - Foresterie - Considérations générales

Champ stratégique Cirad : Axe 2 (2014-2018) - Valorisation de la biomasse

Auteurs et affiliations

• Ferraz Antonio, California Institute of Technology (USA) - auteur correspondant
• Saatchi Sassan, California Institute of Technology (USA)
• Xu Liang, UC (USA)
• Hagen Stephen, CNRS (FRA)
• Chave Jérôme, Laboratoire Evolution et Diversité Biologique (FRA)
• Yu Yifan, California Institute of Technology (USA)
• Meyer Victoria, California Institute of Technology (USA)
• Garcia Mariano, Universidad de Alcalá (ESP)
• Silva Carlos, California Institute of Technology (USA)
• Roswintiart Orbita, Indonesia National Institute of Aeronautics and Space (IDN)
• Samboko Ari, Indonesia National Institute of Aeronautics and Space (IDN)
• Sist Plinio, CIRAD-ES-UPR Forêts et sociétés (FRA)
• Walker Sarah, Winrock International (USA)
• Pearson Timothy R.H., Winrock International (USA)
• Wijaya Arief, WRI (USA)
• Sullivan Franklin B., University of New Hampshire (USA)
• Rutishauser Ervan, Carbofor-Expert (CHE)
• Hoekman Dirk, Wageningen University (NLD)
• Ganguly Sangram, NASA (USA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/598815/)

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