Variability in the physico-chemical properties of wood from Eucalyptus robusta depending on ecological growing conditions and forestry practices: The case of smallholdings in the Highlands of Madagascar

Mevanarivo Zo Elia, Ramananantoandro Tahiana, Tomazello Filho Mario, Napoli Alfredo, Razafimahatratra Andriambelo Radonirina, Razakamanarivo Ramarson Herintsitohaina, Chaix Gilles. 2020. Variability in the physico-chemical properties of wood from Eucalyptus robusta depending on ecological growing conditions and forestry practices: The case of smallholdings in the Highlands of Madagascar. Maderas. Ciencia y Tecnología, 22 (4) : 425-438.

Titre espagnol : Variabilidad en las propiedades fisico-químicas de la madera de Eucalyptus robusta dependiendo de las condiciones ecológicas de crecimiento y prácticas forestales: El caso de los minifundios en las tierras 8altas de Madagascar

Quartile : Q2, Sujet : MATERIALS SCIENCE, PAPER & WOOD

Résumé : This study set out to determine which environmental factors of growth and silvicultural practices can affect the properties of Eucalyptus robusta coppice wood and also to study variability in those properties depending on the factors. Hundred and thirty-five coppice logs aged 2 to 10 years were collected from five zones in the Highlands of Madagascar. Wood density at 12% moisture content was measured by X-ray microdensitometry. Chemical properties, such as the total extractives, Klason lignin and holocellulose contents were predicted using near infrared spectrometry prediction models. The results significantly showed (p-value<0,001) that wood density (543 – 836 kg/m3), total extractives (3,1 – 9,8%) and Klason lignin content (24,6 – 35,3%) increased with age, with the opposite occurring for holocellulose (63,8 – 69,9%). Wood density also varied significantly (p-value<0,001) depending on the zones, which was not the case for chemical properties. The densest woods were found at the hottest zones with less acid soils. Woods were less dense in zones, characterized by high rainfall and a soil rich in nitrogen and organic carbon. The plantation spacing, elevation of the zone and soil texture did not significantly affect wood properties.

Mots-clés Agrovoc : Eucalyptus robusta, propriété physicochimique, propriété du bois, pratique culturale, facteur écologique, facteur du milieu, facteur climatique, petite exploitation agricole

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés libres : Climate, Eucalyptus robusta, Coppice, Wood properties, Rotation, Soil, Silvicultural practices

Classification Agris : K10 - Production forestière
F62 - Physiologie végétale - Croissance et développement
F08 - Systèmes et modes de culture

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

Auteurs et affiliations

• Mevanarivo Zo Elia, ESSA (MDG)
• Ramananantoandro Tahiana, ESSA (MDG)
• Tomazello Filho Mario, ESALQ (BRA)
• Napoli Alfredo, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-1559-3975
• Razafimahatratra Andriambelo Radonirina, ESSA (MDG)
• Razakamanarivo Ramarson Herintsitohaina, ESSA (MDG)
• Chaix Gilles, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0003-2015-0551 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/596008/)

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