Sustained timber yield claims, considerations, and tradeoffs for selectively logged forests

Putz Francis E., Romero Claudia, Sist Plinio, Schwartz Gustavo, Thompson Ian, Roopsind Anand, Ruslandi, Medjibe Vincent, Ellis Peter. 2022. Sustained timber yield claims, considerations, and tradeoffs for selectively logged forests. PNAS Nexus, 1 (3):pgac102, 7 p.

https://doi.org/10.1093/pnasnexus/pgac102

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Résumé : What is meant by sustainability depends on what is sustained and at what level. Sustainable forest management, for example, requires maintenance of a variety of values not the least of which is sustained timber yields (STYs). For the 1 Bha of the world's forests subjected to selective or partial logging, failure to maintain yields can be hidden by regulatory requirements and questionable auditing practices such as increasing the number of commercial species with each harvest, reducing the minimum size at which trees can be harvested and accepting logs of lower quality. For assertions of STY to be credible, clarity is needed about all these issues, as well as about the associated ecological and economic tradeoffs. Lack of clarity about sustainability heightens risks of unsubstantiated claims and unseen losses. STY is possible but often requires cutting cycles that are longer and logging intensities that are lower than prescribed by law, as well as effective use of low-impact logging practices and application of silvicultural treatments to promote timber stock recovery. These departures from business-as-usual practices will lower profit margins but generally benefit biodiversity and ecosystem services.

Mots-clés Agrovoc : rendement des forêts, gestion forestière durable, aménagement forestier, exploitation forestière

Mots-clés libres : Forest management, Natural climate solutions, Nature based solutions, Climate change mitigation, Timber growth and yield

Classification Agris : K01 - Foresterie - Considérations générales
K10 - Production forestière

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

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