A sustainable forest future in the tropics means considering secondary forests as an alternative source for timber production

Ngo Bieng Marie-Ange, Souza Oliveira Maïri, Maurent Eliott, Roda Jean-Marc, Herault Bruno, Guizol Philippe, Villalobos Roger, Sist Plinio. 2024. A sustainable forest future in the tropics means considering secondary forests as an alternative source for timber production. In : IUFRO 2024 World Congress: Forests and Society Towards 2050. Book of abstracts. IUFRO. Uppsala : IUFRO, Résumé, 681-682. IUFRO 2024 World Congress: Forests and Society Towards 2050. 26, Stockholm, Suède, 23 Juin 2024/29 Juin 2024.

Résumé : Tropical forests are recognized for their exceptional biodiversity related to the provision of vital ecosystem services. They are also highly vulnerable and threatened, primarily by agricultural development. Tropical forests are disappearing at huge rates and old-growth forests now only account for 25% of all existing tropical forests. In some tropical landscapes, growing deforestation and degradation of old-growth forests is paralleled by the increasing extent of secondary forest (SFs) that regenerates naturally on large areas of abandoned farmland. They represent a hope for sustainable forest future. However, within tropical landscapes SFs are themselves extremely vulnerable to land use changes, but also natural and human-induced catastrophic events, such as fires. SFs have lost their capacity to provide a high level of goods and services, and are located in highly dynamic and human-pressured landscapes, where they interact with competitive productive landscapes. Without appropriate silvicultural management to increase their economic value and restore their ecological functions, they often become degraded and are cleared for more short-term economically productive activities. We hypothesize that the nowadays context of the increasing demand for tropical timber is an opportunity for SF conservation, through active and productive restoration for timber production in tropical SFs. Promoting sustainable and diverse timber production -associated with other environmental services- in SFs is also a way to reduce logging pressure on the remaining intact primary tropical forests : this may be the most important reason to enhance active and productive restoration in tropical SFs. In the suggested flash talk, based on results and knowledge of different studies gathered in the special issue “Active restoration of timber production and other ecosystem services in secondary and degraded forests” ( Forest Ecology and Management), we show that timber species actually represent an unknown and important proportion of tree diversity and AGB within studied SFs plots in Central America and West Africa. Future studies may address this key “global south” challenges of sustainable future for wood production in the tropics, working on active and productive restoration for timber production in SFs, but also on other coherent factors as appropriate logistical investment, local policies and incentives that enhance secondary forest regeneration.

Auteurs et affiliations

• Ngo Bieng Marie-Ange, CIRAD-ES-UPR Forêts et sociétés (GTM)
• Souza Oliveira Maïri, CIRAD-ES-UPR Forêts et sociétés (FRA)
• Maurent Eliott, CIRAD-ES-UPR Forêts et sociétés (FRA) ORCID: 0000-0002-1939-5677
• Roda Jean-Marc, CIRAD-DGDRS (IDN) ORCID: 0000-0002-3967-5297
• Herault Bruno, CIRAD-ES-UPR Forêts et sociétés (FRA) ORCID: 0000-0002-6950-7286
• Guizol Philippe, CIRAD-ES-UPR Forêts et sociétés (FRA)
• Villalobos Roger, CATIE (CRI)
• Sist Plinio, CIRAD-ES-UPR Forêts et sociétés (FRA) ORCID: 0000-0002-4565-4417

Source : Cirad-Agritrop (https://agritrop.cirad.fr/610854/)

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