Stand Density Index
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. A GENERALIZED ABOVEGROUND BIOMASS MODEL FOR JUVENILE INDIVIDUALS OF Rhododendron arboreum (SM.) IN NEPAL
ABSTRACT Carbon in the juvenile plants contribute significant share to the total carbon stock in forests. A precise estimate of aboveground biomass of the juvenile stages of trees is therefore very important. We developed a generalized allometric biomass model for the prediction of aboveground biomass of the juvenile individuals of Rhododendron arboreum (Sm.
CERNE. Publicado em: 09/09/2019
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2. SOIL ATTRIBUTES AND INITIAL CORN DEVELOPMENT AS A FUNCTION OF FERTILIZATION AND INTERCROPPING SYSTEMS
ABSTRACT Fertilization systems that allow higher sowing speeds have been used in areas of grain production, as well as the use of intercropping to improve soil physical quality and provide better soil cover. This study aimed to evaluate soil attributes and the initial corn development and intercropping (corn + velvet bean, corn + pigeonpea, and corn + bonavi
Eng. Agríc.. Publicado em: 25/04/2019
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3. DENSIDADE DE ÁRVORES POR DIÂMETRO NA FLORESTA ESTACIONAL DECIDUAL NO RIO DO GRANDE SUL / DENSITY OF TREES BY DIAMETER IN SEASONAL DECIDUOUS FOREST IN RIO GRANDEDO SUL
O objetivo deste trabalho foi estudar a relação entre a densidade de árvores por hectare e o diâmetro médio para uma Floresta Estacional Decidual, bem como, ajustar o modelo Reineke para descrever este comportamento. A área de estudo localiza-se no município de Silveira Martins, na região central do Rio Grande do Sul e encontra-se em estágio inicial
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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4. Métodos de ajuste da função Weibull e seu desempenho na prognose do crescimento e produção de Eucalyptus dunnii
The main objective of this research was to develop a simulator system of growth and yield for unthinned plantations of Eucalyptus dunnii using different adjustment methods for the Weibull probability density function to describe the forest structure at various ages. The data used in this research came from measurements of 239 plots in E. dunnii stands in the
Publicado em: 2010
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5. DESENVOLVIMENTO INICIAL DE UM PLANTIO MISTO DE Eucalyptus urograndis E Acacia mearnsii EM SISTEMA AGROSSILVICULTURAL / INITIAL GROWTH AND PRODUCTIVITY IM MONOSPECIFIC AND MIXED STANDS OF Eucalyptus urograndis AND Acacia mearnsii IN AN AGROFORESTRY SYSTEM
Understanding the initial development in consortiated systems are vital to decide about practices to obtain a sustainable productivity, in relation to environmental resources in an agrossilvicultural site. Due to this, this study had as objective: - to evaluate the agricultural productivity in agroforestry systems with different arrangements of the forest sp
Publicado em: 2010
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6. Caracterización eléctrica de películas delgadas de Al2O3 depositadas sobre GaAs por la técnica de rocío pirolítico
Electrical characteristics of thin films of aluminum oxide prepared by spray pyrolysis were studied. The films were prepared from solution onto single crystal GaAs (100) substrates at temperatures from 300°C to 600°C. The electrical characteristics of these films as a function of the substrate temperature were determined from the capacitance and current ve
Matéria (Rio de Janeiro). Publicado em: 2008-03
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7. Nutrition, growth, and growth modeling of eucalypt stands submitted to distinct water and nutrient availability / Nutrição, crescimento e sua modelagem em povoamentos de eucalipto em resposta à disponibilidade de água e nutrientes
The eucalypt culture in Brazil has a huge economical, environmental and social importance. In highly weathered soils of tropical regions, the maintenance of adequate flows of water and nutrients is fundamental to sustain yields and, therefore, the competitiveness of the forest sector in the international market. Evaluating and understanding how the water and
Publicado em: 2006
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8. Floristica, Fitossociologia e Heterogeneidade em um povoamento com predominÃncia de Anadenanthera peregrina (Benth.)Speg. / FLORÃSTICS, PHYTOSOCIOLOGY AND HETEROGENEITY IN A STAND WITH PREDOMINANCE OF Anadenanthera peregrina (Benth.) Speg
The present study was developed in an ancient abandoned area of planting of Anadenanthera peregrina, on the campus of the Federal University of Lavras, MG of about 7,56ha. It was aimed to report the floristic composition of this area as well as its phytosociological structure, paying attention to the ecologic aspects of the species, as the regeneration, disp
Publicado em: 2006
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9. Composição florística, estrutura fitossociológica e conteúdo de nitrogênio foliar em cerradão, Luiz Antônio, SP
The cerradão is one of the forest physiognomy of the cerrado biome more threaded with the expansion of agricultural activities. The existence of remaining cerradão areas in the state with different sizes and conservation status show the necessity of studies in these areas. In São Paulo state, 237,918 ha of Cerrado Lato sensu are distributed in patches cen
Publicado em: 2003
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10. Floristic structural characterization and dynamic regeneration of native species on a commercial stand of eucalyptus grandis in Itatinga, São Paulo. / Caracterização florística, estrutural e da dinâmica da regeneração de espécies nativas em um povoamento comercial de Eucalyptus grandis em Itatinga, SP.
The objectives of this study were to analyze a floristic composition, the structure, some aspects of the dynamics of regeneration of native species in understory of commercial stands of Eucalyptus spp and to study the impact that some silvicultural practices (thinning and clear cut) have on regeneration. For this purpose, 17 samples (0.68 ha total sample are
Publicado em: 2002