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FLORAM receives Impact Factor

We are pleased to announce that FLORAM has received its first impact factor rating in the 2022 Journal Citation Reports (JCR).

Now FLORAM has the highest impact factor among Brazilian Forest Sciences journals.

Floresta e Ambiente
https://www.floram.org/article/doi/10.4322/floram.2012.053
Floresta e Ambiente
Research Article Forest Products

Rendimento em Serraria de Toras de Pinus taeda: Sortimentos de Grandes Dimensões

Sawmill Yield of Pinus taeda Logs: Large Assortments

Junior, Mário Dobner; Higa, Antonio Rioyei; Rocha, Márcio Pereira

Downloads: 1
Views: 1489

Resumo

O abastecimento da indústria madeireira com toras de pequenos diâmetros, oriundas de plantios florestais jovens, tem sido uma prática comum, remetendo a questionamentos tanto sobre o processo industrial de desdobro como em relação à qualidade do produto final obtido dessas toras. Nesse contexto, o presente estudo teve como objetivo quantificar o rendimento industrial em serraria, bem como verificar os aspectos financeiros de toras de Pinus taeda (20 a 57 cm de diâmetro), produzidas em rotação de 30 anos e com até quatro desbastes. Verificou-se que quanto maior o diâmetro da ponta fina de uma tora, maior seu rendimento industrial. A partir de 35 e de 45 cm de diâmetro na ponta fina, há diferenciação estatística dos rendimentos. Os benefícios econômicos percentuais para sortimentos finos (20 a 25 cm) e grossos (>45 cm) são semelhantes e superiores aos sortimentos com diâmetros intermediários (25 a 35 cm).

Palavras-chave

fator de conversão, benefício econômico

Abstract

The supply of the timber industry with small diameter logs, derived from young forest plantations, has become a growing practice, leading many to question both the sawing process and the quality of the products obtained from these logs. In this context, the purpose of this study was to quantify the sawmill yield and financial aspects of Pinus taeda logs (20 to 57 cm diameter), produced in a 30 year-old rotation system with up to four thinning processes. It was possible to verify that the larger the log diameter at the smaller end, the greater the industrial yield. Statistical differences in yield were detected as from diameters of 35 and 45 cm. The relative economic benefits between small (20 to 25 cm) and large (>45 cm) diameter assortments were similar, but greater than those from intermediate (25 to 35 cm) diameter assortments.

Keywords

conversion factor, economic benefit
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