Forest Harvesting
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. Modeling residual biomass from mechanized wood harvesting with data measured by forest harvester
Abstract: The lack of accurate models for estimating residual biomass in wood harvesting operations results in underutilization of this co-product by forestry companies. Due to the lack of this information, forestry operations planning, such as chipping and transport logistics, are influenced, with a consequent increase in costs. Thereby, the aim of this stu
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
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2. Estimativa da oferta de biomassa florestal em povoamentos de Pinus taeda L. após intervenções culturais
Resumo Com a determinação do quanto de biomassa florestal é gerada após as intervenções culturais é possível definir as áreas passíveis de exploração. Com isso, o objetivo do trabalho foi quantificar e estimar a oferta de biomassa de Pinus taeda L. disponível após as intervenções culturais. O experimento foi realizado em reflorestamentos nos
Ciênc. Florest.. Publicado em: 02/12/2019
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3. Modeling of tree recruitment by artificial neural networks after wood harvesting in a forest in eastern Amazon rain forest
Resumo A modelagem do recrutamento em florestais tropicais é importante para estudos de sustentabilidade do manejo florestal, por dar subsídio adequado à recuperação do estoque de madeira. O objetivo do trabalho foi estimar o recrutamento após a colheita de madeira, empregando um modelo de rede neural artificial (RNA). A área de estudo está localizad
Ciênc. Florest.. Publicado em: 30/09/2019
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4. Analysis of Noise Transmitted to Workers in Motor-Manual Forest Harvesting in Minas Gerais State
ABSTRACT Noise can entail irreversible damage to the health of workers exposed to this factor. Thus, this work aimed to evaluate noise levels emitted by chainsaws during forest cutting activity. Noise measurements were performed with dosimeters on the workstation and compared to NR15. The noise dose average of all activities in the operation studied exceeded
Floresta Ambient.. Publicado em: 26/09/2019
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5. EFFECT OF TRAFFIC INTENSITIES OF A DIRECTIONAL FELLER AND SKIDDER ON THE COMPACTION OF A BRUNO NITISOL
RESUMO Esta pesquisa avaliou a compactação de um Nitossolo Bruno causada por diferentes intensidades de tráfego do feller direcional e skidder na colheita de madeira em um povoamento de Pinus taeda. Os dados foram coletados em uma empresa florestal localizada no estado do Paraná, Brasil. O procedimento de amostragem foi realizado pela instalação de qua
Rev. Árvore. Publicado em: 23/09/2019
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6. REPETITIVE MOTION AND POSTURAL ANALYSIS OF MACHINE OPERATORS IN MECHANIZED WOOD HARVESTING OPERATIONS
ABSTRACT The objective of this study was to evaluate operators’ posture and repetitive motions in the mechanized wood harvesting operations, aiming comfort, safety, and health of forest operators. The study was carried out in the clearcutting of pine stands located in Paraná State, Brazil. Data were obtained in tree cutting operations with feller buncher
CERNE. Publicado em: 09/09/2019
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7. Manejo da biomassa e sustentabilidade nutricional em povoamentos de Eucalyptus spp. em pequenas propriedades rurais
Resumo O estudo foi realizado com o objetivo de subsidiar práticas de manejo nutricional de povoamentos de Eucalyptus spp. em pequenas propriedades rurais no estado do Rio Grande do Sul. Foram avaliados povoamentos de 2, 4, 6 e 8 anos de idade, com amostragem de 24 árvores e determinação da biomassa e nutrientes nos componentes: folha, galho vivo, galho
Ciênc. Florest.. Publicado em: 30/05/2019
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8. Small-scale Management of Secondary Forests in the Brazilian Atlantic Forest
ABSTRACT Sustainable management of tropical and subtropical secondary forests for multiple purposes, including timber, may encourage farmers to promote regeneration of native forest. We studied the population structures and commercial timber production in two adjacent 33 years-old Brazilian Atlantic Forest stands: a 26 ha forest managed through enrichment w
Floresta Ambient.. Publicado em: 08/04/2019
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9. Consumption of Euterpe edulis fruit by wildlife: implications for conservation and management of the Southern Brazilian Atlantic Forest
Abstract: This study aimed to measure the wildlife consumption of Euterpe edulis fruit and use this data to discuss management possibilities. To estimate infructescence fruit volume consumed, collectors were installed in fruit-bearing palms. To characterize consumption from the ground, samples were placed next to fruiting palms. To identify wildlife and thei
An. Acad. Bras. Ciênc.. Publicado em: 08/04/2019
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10. FINANCIAL ANALYSIS OF ENRICHMENT MODEL USING TIMBER AND NON-TIMBER PRODUCTS OF SECONDARY REMNANTS IN THE ATLANTIC FOREST
RESUMO Os aspectos socioeconômicos podem limitar a expansão da restauração ecológica. Uma alternativa para esta questão é o desenvolvimento de modelos que geram renda para os agricultores, além dos ganhos da própria conservação. Projetamos e implementamos a iniciativa "Sustenta A Mata", um projeto desenvolvido pela The Nature Conservancy e apoiado
Rev. Árvore. Publicado em: 11/02/2019
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11. Spatial Forest Planning for Optimized Harvest Scheduling
ABSTRACT The aim of this study was to develop a mathematical model for the spatial forest planning of harvest activity scheduling. Thirty-eight (38) blocks were formed from stands aged 13 to 17 years considering a total area limit set to 350 hectares. The model was built in Excel ® spreadsheet and solved by CPLEX® optimization software using the Branch an
Floresta Ambient.. Publicado em: 07/02/2019
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12. Soil aggregation and carbon stabilization in burn and no-burn sugarcane management systems
ABSTRACT Retaining sugarcane straw over the soil after harvesting can improve soil structure and increase soil carbon stabilization, mainly in macroaggregates. We evaluated the carbon content in the aggregate classes in areas under burn and no-burn (adopted for five years) sugarcane management systems, focusing on the superficial layer (0.00-0.20 m). The exp
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018