Active restoration in secondary and degraded tropical forests as a nature-based solution to answer the global wood demand

Ngo Bieng Marie-Ange, Boissière Manuel, Dubiez Emilien, Herault Bruno, Guizol Philippe, Morales Jean-Pierre, Roda Jean-Marc, Villalobos Roger, Sist Plinio, Finegan Bryan. 2020. Active restoration in secondary and degraded tropical forests as a nature-based solution to answer the global wood demand. In : FTA 2020 Science Conference: Forests, trees and agroforestry science for transformational change: Book of abstracts. Gitz V., Meybeck A., Ricci F., Belcher B., Brady M.A., Coccia F., Elias M., Jamnadass R., Kettle C., Larson A., Li Y., Louman B., Martius C., Minang P., Sinclair F., Sist P., Somarriba E. (editors). Bogor : CGIAR Research Program on Forests, Trees and Agroforestry (FTA), 164. FTA 2020 Science Conference: Forests, trees and agroforestry science for transformational change, Bogor, Indonésie, 14 Septembre 2020/25 Septembre 2020.

Résumé : In this talk, we will address issues related to the potential of tropical secondary and degraded forests (SDFs) as sustainable and complementary alternatives for wood production, from case studies in Central American countries. We will also discuss the potential of wood production in SDFs as an effective NBS for the climate crisis, i.e. associated to effective mitigation in the future. Tropical secondary (1) and degraded (2) forests are disturbed forest areas, growing in formerly deforested areas (1) or which have suffered from unsustained human activities, such as unplanned and repetitive logging or fire (2). They have consequently lost their capacity to provide a high level of goods and services. SDFs are important worldwide as they account for swathes of forest landscapes and are invaluable forest ecosystems related to biodiversity recovery, carbon storage, but also a diversity of other forest ecosystem services. However, they are fragile and endangered forest ecosystems, as they are located in highly dynamic pressured landscapes and are susceptible to catastrophic events. Without appropriate silvicultural management designed to increase their economic value, they may well be cleared for more economically productive activities. Moreover, the increasing demand for tropical timber in recent decades and in the near future may worsen the pressure on these fragile ecosystems. We suggest that active restoration implemented towards wood production in SDFs may amount to a sustainable and complementary alternative for wood production in the future. Wood production is definitely an opportunity for SDF conservation in the context of the increase in wood demand, while limiting pressure for wood demand on the remaining natural forests. Moreover, SDF maintenance and restoration through secondary forest dynamics contribute significantly to the maintenance of crucial ecosystems services in the context of the climate crisis. Following the CATIE project on secondary forest dynamics and valuation in Central American countries (IKI Funding program 2017–2020), we are setting up with FTA support (2020), work on the assessment and the improvement of wood production potential from secondary forests through analysis of data from national forest inventories in Central American countries. During the FTA science conference 2020, we will present the first results of this work. We will discuss the limitations and opportunities associated with wood production in tropical SDFs nowadays in the global context, but also the mitigation potential associated to wood production in these SDFs.

Mots-clés libres : Active restoration, Secondary forests, Degraded forests, Increase in timber demand, Mitigation potential

Auteurs et affiliations

• Ngo Bieng Marie-Ange, CIRAD-ES-UPR Forêts et sociétés (CRI)
• Boissière Manuel, CIRAD-ES-UPR Forêts et sociétés (FRA) ORCID: 0000-0002-2552-7664
• Dubiez Emilien, CIRAD-ES-UPR Forêts et sociétés (COG) ORCID: 0000-0002-7097-5263
• Herault Bruno, CIRAD-ES-UPR Forêts et sociétés (CIV) ORCID: 0000-0002-6950-7286
• Guizol Philippe, CIRAD-ES-UPR Forêts et sociétés (CMR)
• Morales Jean-Pierre, CATIE (CRI)
• Roda Jean-Marc, CIRAD-ES-UPR Forêts et sociétés (MYS) ORCID: 0000-0002-3967-5297
• Villalobos Roger
• Sist Plinio, CIRAD-ES-UPR Forêts et sociétés (FRA)
• Finegan Bryan, CATIE (CRI)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/597895/)

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