Log quality and lumber yield for export of five species from the Brazilian Amazon

Michelly Casagrande Stragliotto (), Aylson Costa Oliveira, Elaine Cristina Lengowski, Tatiana Paula Marques Arruda, José Reinaldo Moreira Silva and Bárbara Luísa Corradi Pereira
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Michelly Casagrande Stragliotto: Federal University of Lavras-UFLA
Aylson Costa Oliveira: Federal University of Mato Grosso-UFMT
Elaine Cristina Lengowski: Federal University of Mato Grosso-UFMT
Tatiana Paula Marques Arruda: State University of Mato Grosso-UNEMAT
José Reinaldo Moreira Silva: Federal University of Lavras-UFLA
Bárbara Luísa Corradi Pereira: Federal University of Mato Grosso-UFMT

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2025, vol. 27, issue 5, No 13, 10059-10082

Abstract: Abstract Assessing the log quality from Amazonian species is essential for optimizing lumber yields, especially for export. The objective was to evaluate the log quality and lumber yield for export of the Brazilian species Dinizia excelsa Ducke, Hymenolobium heterocarpum Ducke, Dipteryx odorata (Aubl.) Willd., Astronium lecointei Ducke and Qualea paraensis Ducke. The log quality parameters analyzed were conicity, flattening, curving, buttresses, cracks, heartwood percentage and net volume. The yield of sawn lumber was determined after sawing. The values of conicity (0.92 cm m−1) and flattening (96%) did not differ between species. Qualea paraensis and Hymenolobium heterocarpum showed a better classification for curving. Astronium lecointei showed no buttresses. Qualea paraensis showed better classification for annular ring cracks, and Dipteryx odorata showed better classification for surface and diametrical cracks. Dipteryx odorata (86.75%) and Hymenolobium heterocarpum (82.4%) showed better results for heartwood percentage. Dinizia excelsa (90.1%), Dipteryx odorata (83.6%) and Hymenolobium heterocarpum (82.6%) logs showed higher net volume values. The lumber yield for export differed between species and ranged from 23.9% (Dinizia excelsa) to 40.2% (Qualea paraensis). Due to the international market demand for defect-free tropical timber and the relationship between log quality and lumber yield, it is advisable to allocate higher-quality logs for export-oriented products to minimize the generation of timber waste.

Keywords: Timber industry; Sawmill; Log classification; Amazon Rainforest (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1007/s10668-023-04298-3

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