Studying ecophysiological patterns to improve the management of high-productivity Eucalypt plantations: the EUCFLUX project

Guillemot Joannès, Le Maire Guerric, Alcarde Alvares Clayton, Borges Jarbas, Chaves Raul, Figura Marco Aurélio, De Jesus Guilherme Luiz, Leite Fernando P., Loos Rodolfo Araujo, Moreira Gabriela, Silva Vinícius, Stahl James, Laclau Jean-Paul, Nouvellon Yann, Stape Jose Luiz, Campoe Otávio. 2019. Studying ecophysiological patterns to improve the management of high-productivity Eucalypt plantations: the EUCFLUX project. Pesquisa Florestal Brasileira (39), n.spéc., Résumé : 323. IUFRO World Congress 2019 "Forest Research and Cooperation for Sustainable Development". 25, Curitiba, Brésil, 29 Septembre 2019/5 Octobre 2019.

https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2043/

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Url - éditeur : https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/2043/900

Résumé : Global climatic changes may deeply affect the functioning of Eucalyptus plantations. It is therefore crucial to gain knowledge on the drivers of Eucalyptus productivity, carbon (C) allocation and resource-use efficiency in order to ensure a sustained productivity. These data are key to improve the productivity of Eucalyptus plantations and reduce their impacts on natural resources towards sustainable management. Building on the innovative results obtained in its first phase (2007-2017), the second phase of the EUCFLUX project, initiated in 2018, aims to enhance our knowledge on eucalypt plantations functioning at various spatiotemporal scales. The EUCFLUX study site is located on a commercial clonal plantation of ca 260 ha in Southern Brazil. The project will specifically 1) quantify the fluxes of energy, C and water along a complete rotation using the Eddy Covariance technique, girth inventories, litter and C content surveys and flux chambers; and assess the effects of forest plantations on soil water availability down to 10m and water table 2) use high-resolution dendrometers and anatomical analyses to study the determinism of growth 3) combine field data, high resolution remote sensing and modelling to upscale our knowledge of eucalypt functioning from site to regional scales and 4) compare the functional responses of more than 16 eucalypt genotypes (clonal and seed-origin) in a common-environment field trial, in order to evaluate the generality of the results obtained on the main clone, but also to evaluate how different are the functional responses of coppice and planted eucalypt trees.

Mots-clés Agrovoc : plantation forestière, Eucalyptus, adaptation aux changements climatiques, séquestration du carbone, cycle hydrologique, croissance, génotype

Mots-clés géographiques Agrovoc : Brésil

Classification Agris : K10 - Production forestière
P40 - Météorologie et climatologie
F62 - Physiologie végétale - Croissance et développement
F60 - Physiologie et biochimie végétale
F30 - Génétique et amélioration des plantes
U10 - Informatique, mathématiques et statistiques

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

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