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Allocation of storage yards in management plans in the Amazon by means of mathematical programming. Repositório Alice
SILVA, E. F. da; SILVA, G. F. da; FIGUEIREDO, E. O.; BINOTI, D. H. B.; MENDONÇA, A. R. de; TORRES, C. M. M. E.; PEZZOPANE, J. E. M..
The present study aimed to optimize the location of wood storage yards in forest management for the production of wood in the Brazilian Amazon. The area of forest management studied was 638.17 ha, with 1478 trees selected for harvest with a diameter at breast height of at least 50 cm in accordance with Brazilian legislation. Taking the topography into account-permanent preservation areas, restricted areas, and remaining trees-and using GIS tools, 7896 sites were identified that could be used as wood storage yards. By using mathematical programming techniques, more specifically binary integer linear programming, and based on the classical p-median model, optimal locations for the opening of yards were defined. Four scenarios were proposed combining distance...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Estaleiro; Manejo florestal; Administração florestal; Planejamento florestal; Extração da madeira; Madeira; Armazenamento; Método de otimização; Programação linear; Forest management; Logging; Sort yards; Manejo forestal; Linear programming; System optimization; Explotación forestal; Patios de clasificación; Programación lineal; Optimización de los sistemas.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088822
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Beekeepers' honeybee colony selection practice in Tigray, Northern Ethiopia. Repositório Alice
TILAHUN, M.; ABRAHA, Z.; GEBRE, A.; DRUMOND, P. M..
Selection of colonies plays an important role for successful harvesting of desired products from honeybees. The purpose of this study was therefore to assess local knowledge and experience of beekeepers in Tigray regional state of Ethiopia with regard to colony selection and management practices during purchase and multiplication. Respondent selection was carried out based on the existing conventional agroecological zones namely Dega (highland), Kolla (lowland) and Weinadega (midland). Four woredas (districts) from Dega zone, and three from each of Kolla and Weinadega zones were sampled. A total of 185 beekeepers were interviewed to understand the criteria they were using to select colonies. Preference ranking data were indexed using linear programming....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Tigray; Etiópia; Apicultura; Pequeno produtor; Abelha; Colônia; Seleção; Método de otimização; Programação linear; Apiculture; Beekeepers; Honey bee colonies; Selection criteria; System optimization; Linear programming; Apicultores; Colonias de abejas mielíferas; Criterio de selección; Optimización de los sistemas; Programación lineal.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1043917
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Optimal selective logging regime and log landing location models: a case study in the Amazon forest. Repositório Alice
SILVA, P. H. da; GOMIDE, L. R.; FIGUEIREDO, E. O.; CARVALHO, L. M. T. de; FERRAZ FILHO, A. C..
Reduced-impact logging is a well known practice applied in most sustainable forest management plans in the Amazon. Nevertheless, there are still ways to improve the operational planning process. Therefore, the aim of this study was to create an integer linear programming (ILP) to fill in the knowledge gaps in the decision support system of reduced impact logging explorations. The minimization of harvest tree distance to wood log landing was assessed. Forest structure aspects, income and wood production were set in the model, as well as the adjacency constraints. Data are from a dense ombrophylous forest in the western Brazilian Amazon. We applied the phytosociological analysis and BDq method to define the selective logging criteria. Then, ILP models were...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Manejo florestal sustentável; Selective logging; Reduced-impact logging; Porto Acre (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Administração florestal; Floresta tropical; Extração da madeira; Estocagem; Método de otimização; Programação linear; Sustainable forestry; Tropical forests; Sort yards; System optimization; Linear programming; Manejo forestal; Silvicultura sustentable; Patios de clasificación; Optimización de los sistemas; Programación lineal.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1088841
Registros recuperados: 3
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