For the sake of resilience and multifunctionality, let's diversify planted forests!

Messier Christian, Bauhus Jürgen, Sousa-Silva Rita, Auge Harald, Baeten Lander, Barsoum Nadia, Bruelheide Helge, Caldwell Benjamin, Cavender-Bares Jeannine, Dhiedt Els, Eisenhauer Nico, Ganade Gislene, Gravel Dominique, Guillemot Joannès, Hector Andrew, Herault Bruno, Jactel Hervé, Koricheva Julia, Kreft Holger, Mereu Simone, Muys Bart, Nock Charles A., Paquette Alain, Parker John D., Perring Michael P., Ponette Quentin, Potvin Catherine, Reich Peter B., Scherer-Lorenzen Michael, Schnabel Florian, Verheyen Kris, Weih Martin, Wollni Meike, Zemp Delphine Clara. 2022. For the sake of resilience and multifunctionality, let's diversify planted forests!. Conservation Letters, 15 (1):e12829, 8 p.

https://doi.org/10.1111/conl.12829

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Résumé : As of 2020, the world has an estimated 290 million ha of planted forests and this number is continuously increasing. Of these, 131 million ha are monospecific planted forests under intensive management. Although monospecific planted forests are important in providing timber, they harbor less biodiversity and are potentially more susceptible to disturbances than natural or diverse planted forests. Here, we point out the increasing scientific evidence for increased resilience and ecosystem service provision of functionally and species diverse planted forests (hereafter referred to as diverse planted forests) compared to monospecific ones. Furthermore, we propose five concrete steps to foster the adoption of diverse planted forests: (1) improve awareness of benefits and practical options of diverse planted forests among land-owners, managers, and investors; (2) incentivize tree species diversity in public funding of afforestation and programs to diversify current maladapted planted forests of low diversity; (3) develop new wood-based products that can be derived from many different tree species not yet in use; (4) invest in research to assess landscape benefits of diverse planted forests for functional connectivity and resilience to global-change threats; and (5) improve the evidence base on diverse planted forests, in particular in currently under-represented regions, where new options could be tested.

Mots-clés Agrovoc : foresterie à objectifs intégrés, plantation forestière, résilience des forêts, gestion forestière durable, biodiversité, forêt mélangée, services écosystémiques, reconstitution forestière

Mots-clés libres : Biodiversity, Climate change mitigation, Ecosystem services, Forest functioning, Forest landscape restoration, Plantations, Resilience, Sustainable forest management

Classification Agris : K01 - Foresterie - Considérations générales
K11 - Génie forestier
P01 - Conservation de la nature et ressources foncières

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

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