10 documents found, page 1 of 1
Tree scaling standing with optical dendrometer in the crop-livestock-forest int...
Curto, Rafaella De Angeli; Lauro, Aline Cristina; Tonini, Helio; Kohler, Sintia Valerio; de Araújo, Emanuel José Gomes; Biazatti, Scheila CristinaThe objective of this study was to evaluate the accuracy of the Criterion RD 1000® optical dendrometer in a crop-livestock-forest integration system for measuring total volume and sections with bark of eucalyptus trees. Selected trees were felled, having their actual strict volumes obtained. The Smalian method was used for destructive Non-destructive scaling was using carried out using criterion. Bartlett’s tes...
EFEITO DO ESPAÇAMENTO E ARRANJO DE PLANTIO NA RELAÇÃO HIPSOMÉTRICA DE EUCALIPTO...
Cerqueira, Clebson Lima; Môra, Rômulo; Tonini, Helio; Vendruscolo, Diogo Guido Streck; Lanssanova, Luciano Rodrigo; Arce, Julio EduardoDada a importância dos sistemas de integração Lavoura-Pecuária-Floresta (iLPF), tornam-se indispensáveis a realização de pesquisas sobre a modelagem da altura para dar suporte na gestão e quantificação dos recursos disponíveis. Neste sentido, objetivou-se avaliar o efeito do espaçamento e arranjos de plantio na relação hipsométrica de um híbrido Eucalyptus grandis x Eucalyptus urophylla em iLPF, utilizando mode...
Soil-climatic factors related to seed production of Brazil nut trees in Roraima...
Tonini, Helio; Ivanov, Guilherme Boeira; Fleig, Frederico DimasDespite the socioeconomic importance for the Amazon, knowledge about the factors that influence the production of Brazil nuts is still incipient. In this paper we evaluate the influence of precipitation and soil texture, flood and depth on seed production. The data were collected in native trees monitored in permanent plots of 9 ha (300 m x 300 m) in the municipality of Caracaraí, Roraima State, for five years....
Growth and wood energy quality of Tachigali vulgaris in different spacing
Tonini, Helio; Schwengber, Dalton Roberto; Morales, Marina Moura; de Oliveira, Jane Maria FrancoThis research was carried out to assess the effect of plant spacing over “tachi-branco”growth, production, biomass allocation and wood energetic quality. The experiment was installed in forest/savanna transition area in the North region of Roraima State, Brazil in a randomized block design and five plant spacing (2 m x 2 m; 2.5 m x 2.5 m; 3 m x 2 m; 3 m x 2.5 m; and 3 m x 3 m). After 70 months trees diametric g...
Annual variations in seed yield and implications for multiple use of crabwood
Tonini, HelioThe objective of this study was to evaluate the annual variation in seed yield of crabwood, and discuss implications for multiple use management of the species. Data were collected in a forest area in the southern of Roraima State in a permanent plot of 9 ha (300 m x 300 m) with a natural population of crabwood. Seed production was monitored of 115 trees during four years. Seed yield varied among years. May to ...
CARACTERIZAÇÃO E RENTABILIDADE DO SISTEMA EXTRATIVISTA DA CASTANHA-DO-BRASIL PR...
Tonini, Helio; Baldoni, Aisy Botega; Hoogerheide, Eulalia Soler Sobreira; Botelho, Silva de Carvalho CamposO trabalho teve como objetivo caracterizar, gerar índices técnicos e analisar aspectos econômicos do sistema extrativista da castanha-do-brasil praticado em Itaúba (MT). Os dados foram obtidos em entrevistas com coletores e comerciantes localizados as margens da BR 163 Cuiabá- Santarém. A determinação dos custos e receitas foi realizada por etapas do processo produtivo, pela identificação dos custos fixos e var...
Spatial pattern of Amazonian timber species using cartesian and spatial coordin...
Condé, Tiago Monteiro; Tonini, Helio; Silva, Fernando da; Barni, Paulo Eduardo; Souza Celes, Carlos Henrique; Araujo, Raquel Fernandes deGeographic information system (GIS) applied to forest analysis permit the recognition and analysis of spatial patterns of species in two and three dimensional. The aim of this study to demonstrate the efficiency of cartesian and spatial coordinates method (MCCE), method of correcting UTM coordinates of trees location in accordance with the location of field or Cartesian (X ,Y), combined with natural neighbor in...
BIOMASSA E ÁREA FOLIAR DE CLONES DE EUCALIPTO EM ILPF: IMPLICAÇÕES PARA A DESRAMA
Tonini, Helio; Morales, Marina Moura; Meneguci, João Luiz Palma; Antonio, Diego Barbosa Alves; Wruck, Flavio jesusO objetivo do trabalho foi estudar a partição da biomassa na copa de clones comerciais de eucaliptos em Integração Lavoura Pecuária Floresta (ILPF) e recomendar práticas de desrama. Os dados foram coletados na Fazenda Guarantã em Juara, MT, e foram avaliados cinco clones implantados em renques duplos e triplos em espaçamento de 21 x 3,5 x 2,5 m aos 15 meses de idade. Para o estudo da biomassa na parte aérea das...
Volume equation for commercial species in tropical rain forest in southern Roraima
Tonini, Helio; Borges, Renato AlvesThis study aimed to fit mathematical models for estimating commercial volume with bark for species of an Upland Dense Rain Forest located in southern of the state of Roraima, Brazil. It was cubed by Smalian method an amount of 122 trees of 18 species with diameter at breast height (DBH) higher than 50 cm. Nine models were adjusted by least squares methods, and selected on the basis of the adjusted determination...
Growth of Teak (Tectona grandis) in a Setentrional Amazon Stand
Tonini, Helio; Costa, Mirian Cristina Gomes; Scwengber, Luiz Augusto MelloThis study was carried out aiming to fit a volumetric model and a growth function, as well to comparethe growth of teak (Tectona grandis) in a stand located at Iracema (RR) with the growth of teak stands located at different areas in Brazil and Central America. To fit volumetric models 122 sample-trees were used and to fit a growth function to estimate DBH, medium and dominant height, and total volume without b...