Revue: | Maderas : ciencia y tecnología |
Base de datos: | |
Número de sistema: | 000534516 |
ISSN: | 0718-221X |
Autores: | Mevanarivo, Zo Elia1 Ramananantoandro, Tahiana1 Tomazello, Mario2 Napoli, Alfredo3 Razafimahatratra, Andriambelo Radonirina1 Razakamanarivo, Herintsitohaina Ramarson4 Chaix, Gilles2 |
Instituciones: | 1Ecole Supérieure des Sciences Agronomiques Département Eaux et Forêts, Antananarivo. Madagascar 2Universidade de Sao Paulo Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba. Brasil 3CIRAD UR BioWooEB, Montpellier. France 4Université d'Antananarivo Laboratoire des Radio Isotopes Unité "Sol et Changement climatique", Antananarivo. Madagascar 5CIRAD UMR AGAP, Montpellier. France 6Université Montpellier CIRAD AGAP, Montpellier. France |
Año: | 2020 |
Volumen: | 22 |
Número: | 4 |
Paginación: | 425-438 |
País: | Chile |
Idioma: | Inglés |
Resumen en inglés | 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. |
Keyword: | Climate, Eucalyptus robusta, Coppice, Wood properties, Rotation, Soil, Silvicultural practices |
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