scholarly journals ZONEAMENTO ECOLÓGICO DE PEQUENA ESCALA PARA ESPÉCIES FLORESTAIS TRADICIONAIS NO DISTRITO FEDERAL

FLORESTA ◽  
2012 ◽  
Vol 42 (2) ◽  
pp. 421 ◽  
Author(s):  
Raquel Fernandes De Araujo ◽  
Eraldo Aparecido Trondoli Matricardi ◽  
Mauro Eloi Nappo
Keyword(s):  
Tree Species ◽  
Hevea Brasiliensis ◽  
Eucalyptus Camaldulensis ◽  
Tectona Grandis ◽  
Eucalyptus Citriodora ◽  
Pinus Caribaea ◽  
Distrito Federal ◽  
Eucalyptus Camaldulensis Dehnh ◽  
Corymbia Citriodora ◽  
Pinus Caribaea Morelet

Neste estudo foram analisadas variáveis biofísicas para definir áreas potenciais para o plantio de espécies florestais tradicionais no território do Distrito Federal. As espécies testadas foram Pinus caribaea Morelet var. caribaea, P. caribaea Morelet var. hondurensis (Sénécl.) W. H. G. Barrett & Golfari, P. caribaea Morelet var. bahamensis (Griseb.) W. H. G. Barrett & Golfari, P. elliottii Engelm. var. elliottii, Eucalyptus camaldulensis Dehnh., E. urophylla S. T. Blake, E. grandis W. Hill, Corymbia citriodora (Hook.) K. D. Hill & L. A. S. Johnson (ex Eucalyptus citriodora), C. torelliana (F. Muell.) K. D. Hill & L. A. S. Johnson (ex Eucalyptus torelliana), Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.e Tectona grandis L. f. Para identificar as áreas aptas para a implantação dos povoamentos florestais, foi realizada a sobreposição de variáveis do meio físico do Distrito Federal com variáveis relacionadas às exigências adaptativas de cada espécie estudada. Com base nos resultados desta pesquisa, as espécies que apresentaram potencial para cultivo nas condições físicas do Distrito Federal foram as três variedades de Pinus caribaea, P. elliottii var. elliottii, Eucalyptus camaldulensis, E. urophylla, E. grandis e Corymbia citriodora. As espécies Corymbia torelliana, Hevea brasiliensis e Tectona grandis não apresentaram potencial para o cultivo.Palavras-chave:Silvicultura; sistema de informação geográfica. AbstractSmall scale ecological zoning of Distrito Federal, Brazil, for traditional forest species. This study evaluated biophysical variables to identify suitable areas of the Distrito Federal for planting traditional tree species. The studied tree species included Pinus caribaea Morelet var. caribaea, P. caribaea Morelet var. hondurensis (Sénécl.) W. H. G. Barrett & Golfari, P. caribaea Morelet var. bahamensis (Griseb.) W. H. G. Barrett & Golfari, P. elliottii Engelm. var. elliottii, Eucalyptus camaldulensis Dehnh., E. urophylla S. T. Blake,  E. grandis W. Hill, Corymbia citriodora (Hook.) K. D. Hill & L. A. S. Johnson (ex Eucalyptus citriodora), C. torelliana (F. Muell.) K. D. Hill & L. A. S. Johnson (ex Eucalyptus torelliana), Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg. and Tectona grandis L. f.Suitable areas for the studied tree species were identified by overlapping biophysical variables of the Distrito Federal, wich included adaptive tree requirements and site characteristics.Based on this research results, the territory of the study area is suitable for cultivation of three varieties of Pinus caribaea, P. elliottii var. elliottii, Eucalyptus camaldulensis, E. urophylla, E. grandis and Corymbia citriodora. There were no suitable areas for cultivation of Corymbia torelliana, Hevea brasiliensis and Tectona grandis.Keywords: Silviculture; geographic information system.

scholarly journals Levantamento de Scolytidae (Coleoptera) em plantações de Eucalyptus spp. em Cuiabá, estado de Mato Grosso.

2005 ◽  
Vol 14 (1) ◽  
pp. 47 ◽  
Author(s):  
Alberto Dorval ◽  
Otávio Peres Filho ◽  
Eli Nunes Marques
Keyword(s):  
Eucalyptus Camaldulensis ◽  
Eucalyptus Urophylla ◽  
Eucalyptus Citriodora ◽  
Mato Grosso ◽  
Eucalyptus Pellita ◽  
Eucalyptus Camaldulensis Dehnh

Realizou-se um levantamento populacional de espécies da família Scolytidae em plantios de Eucalyptus camaldulensis Dehnh. Dehnh. Dehnh., Eucalyptus citriodora Hook. f., Eucalyptus pellita F. Muell. e Eucalyptus urophylla S.T. Blake, com auxílio de armadilhas etanólicas, modelo escolitídeo-Curitiba, no município de Cuiabá, estado de Mato Grosso, de março de 1998 a fevereiro de 1999. Foram utilizadas 24 armadilhas, sendo seis por talhão/espécie de Eucalyptus. As coletas foram quinzenais e divididas em dois períodos: seco (maio-outubro) e chuva (novembro-abril). Foram coletados um total de 19.153 indivíduos, distribuídos em 11 gêneros e 42 espécies. Nos períodos seco e chuvoso foram coletados 9.865 e 9.288 indivíduos respectivamente. Nos talhões de Eucalyptus pellita e de Eucalyptus urophylla, foram coletados as maiores quantidades de indivíduos em ambos os períodos analisados. Cryptocarenus diademantus Eggers, 1937; Cryptocarenus seriatus Eggers, 1933; Cryptocarenus heveae (Hagedorni, 1912); Hypothenemus obscurus (Fabricius, 1801) e Xyleborus spinosulus (Schedl, 1934) foram, quantitativamente, as espécies mais importantes nos plantios das quatro espécies de Eucalyptus.

scholarly journals PHYSICAL PROPERTIES AND PRESERVATIVE TREATMENT OF EUCALYPTUS AND CORYMBIA WOOD

FLORESTA ◽  
2021 ◽  
Vol 51 (2) ◽  
pp. 410
Author(s):  
Manolo Trindade Quintilhan ◽  
Weslley Candido de Oliveira ◽  
Aylson Costa Oliveira ◽  
Bárbara Luísa Corradi Pereira ◽  
Romulo Môra
Keyword(s):  
Physical Properties ◽  
Eucalyptus Grandis ◽  
Basic Density ◽  
Eucalyptus Camaldulensis ◽  
Treatment Quality ◽  
Preservative Treatment ◽  
Eucalyptus Camaldulensis Dehnh ◽  
Corymbia Citriodora

The properties of wood influence its use as a final product, so it is essential to know their relation and influence on the quality of preservation. In this sense, for the present study we aim at the determination of the physical properties of Corymbia citriodora [Eucalyptus citriodora Hook]; Eucalyptus camaldulensis Dehnh. and Eucalyptus camaldulensis Dehn. x Eucalyptus grandis, and the quality of the preservative treatment with CCA-C in an autoclave. We determined diameter, heartwood and sapwood percentages, and their relationship, as well as the basic density for the three genetic materials. The quality of the preservation was evaluated through the area treated and not treated by CCA, besides its penetration and retention. The highest proportion of sapwood, treated area, and highest density value was found in C. citriodora, whereas the hybrid E. camaldulensis x E. grandis presented the highest level of CCA retention. The diameter and density showed the highest correlation with CCA retention in wood, the length and moisture of the small logs also shown to be influential. All clones presented satisfactory chemical treatment quality for use as fence posts.

scholarly journals Assessment of land-cover changes and carbon sequestration potentials of tree species in j4 section of Omo Forest Reserve, Ogun State, Nigeria

2020 ◽  
Vol 22 (1) ◽  
pp. 137-152
Author(s):  
A.A. Adeyemi ◽  
S.O. Adeleke
Keyword(s):  
Tree Species ◽  
Carbon Stock ◽  
Forest Type ◽  
Stand Density ◽  
Tectona Grandis ◽  
Natural Forest ◽  
Gmelina Arborea ◽  
Pinus Caribaea ◽  
Forest Reserve ◽  
Nauclea Diderrichii

We evaluated carbon stock accumulation on potential of tree species in five forest-types in Omo Forest Reserve of western Nigeria. This included four forest plantations and a natural forest of mixed species. The reserve was stratified into Gmelina arborea, Tectona grandis, Pinus carebeae and Nauclea diderrichii plantations as well as natural forest. Each forest-type was assessed using circular plot method. Plot points were pre-determined using remote sensing. For each point, two circular plots were established, the main plot with a radius of 12.61 m (500 m2 ) and the subplot with a radius of 5.64 m (100 m2 ). In each plot, tree Dbh and height were measured for trees with Dbh ≥10 cm, while only trees with Dbh <10 cm but >2 cm (i.e. 2 cm ≤ Dbh < 10 cm) were considered in the sub-plot. Soil samples were also collected at 10 locations with 2 each in the north, south, east, west and at the plot centre, in each forest-type. The samples were analysed to obtain soil organic carbon. Above- and belowground biomass and carbon stocks were estimated using the appropriate allometries formulated for the tropics. All empirical relationships were included in the existing allometries with Dbh and height as predictors. Landsat images of the reserve in 1991, 2000, 2014 and 2019 were processed and analysed to assess forest degradation. The results revealed that 23-year-old Pinus caribaea plantation  sequestered more carbon (35.78±2.73 tons/ha) than 35-year-old Gmelina arborea (18.96±1.82 tons/ha), 43-year-old Tectona grandis (17.75±2.13 tons/ha) and 43-year-old Nauclea diderrichii (17.36±1.87 tons/ha) plantations and natural forest (21.98±2.38 tons/ha). The study showed that stand density influences carbon stock accumulation of forest. It was observed that individual stems of Pinus caribaea were better carbon accumulators than Gmelina arborea, Tectona gransdis and Nauclea diderrichii. The same trend was observed for CO2 captures as Pinus caribaea captured 131.31±10.02 tons/ha with Nauclea diderrichii the least, having a value of 63.71±6.9 tons/ha. Keywords: Biomass, Carbon stock, Degradation, Forest-type, Stand density

TREE SPECIES CULTIVATION ON SUBSISTENCE AGRICULTURAL FIELDS IN NORTHWESTERN ETHIOPIA

2021 ◽  
Vol 14(63) (1) ◽  
pp. 11-24
Author(s):  
Alebel MELAKU
Keyword(s):  
Tree Species ◽  
Eucalyptus Camaldulensis ◽  
Tree Planting ◽  
Extension System ◽  
Poor Households ◽  
Exotic Tree ◽  
Significant Difference ◽  
The Status ◽  
Eucalyptus Camaldulensis Dehnh ◽  
Species Preferences

The study was intended to identify species preferences, the relationship between livelihood status and tree planting, and the major tree growing patterns of smallholder subsistence farmers in rural Ethiopia. Data was collected through household interviews and the total enumeration of all tree species on respondents’ landholdings. A total of 23 tree species were recorded integrated within the farming landscape as boundary plantings, scattered on crop fields, around the homestead and woodlots. There was a significant difference in the mean number of trees per household across the three wealth classes. Among the three wealth classes, the medium wealth category households have a relatively higher number of tree species than rich and poor households (p<0.05). Considering the ever-increasing population and the resulting demand for construction poles, fuelwood, household utensils, farm implements, and the fast-growing performance of the species, Eucalyptus camaldulensis Dehnh. was the first preferred tree species to households for planting. Tree integration in the farming landscape should be recognized since it will be invaluable in developing plans for agroforestry interventions. However, exotic tree species have dominated the status of indigenous tree species. Then, there should be a continuous and detailed extension system to upgrade the traditional management system and the tree selection to be integrated.

ALTURA E SOBREVIVÊNCIA DE Eucalyptus camaldulensis Dehnh EM DIFERENTES ESPAÇAMENTOS AOS 14 MESES APÓS PLANTIO EM CAMPO EM ALVORADA DO GURGUÉIA –PIAUÍ

2018 ◽  
Author(s):  
Silva Raynara Ferreira da ◽  
Sousa Moema Barbosa de ◽  
Silva Aluísio Costa ◽  
Marinho Eduardo Silva ◽  
Dias Bruna Anair Souto
Keyword(s):  
Eucalyptus Camaldulensis ◽  
Eucalyptus Camaldulensis Dehnh

scholarly journals Tratamento preservativo da madeira juvenil de Eucalyptus camaldulensis Dehnh: pelo método de substituição de seiva

CERNE ◽  
2011 ◽  
Vol 17 (2) ◽  
pp. 275-282 ◽  
Author(s):  
Pablo Marcel de Arruda Torres ◽  
Juarez Benigno Paes ◽  
José Augusto de Lira Filho ◽  
José Wallace Barbosa do Nascimento
Keyword(s):  
Eucalyptus Camaldulensis ◽  
Rio Tinto ◽  
Eucalyptus Camaldulensis Dehnh ◽  
Río Tinto

Objetivou-se, com esta pesquisa, analisar a qualidade do tratamento preservativo da madeira juvenil de Eucalyptus camaldulensis Dehnh. e verificar a influência da inversão das peças na solução preservativa, na distribuição, na penetração e na retenção do CCB, ao longo das peças tratadas pelo método de substituição de seiva. Árvores de Eucalyptus camaldulensis foram coletadas na Zona Rural do Município de Rio Tinto - PB, de um povoamento com quatro anos. No povoamento foram escolhidas, aleatoriamente, cinco árvores, sendo três de maior diâmetro. Para o tratamento da madeira, empregou-se o método de substituição de seiva por transpiração radial utilizando-se uma solução de 2% de ingredientes ativos de borato de cobre cromatado (CCB) e comparou-se o efeito da inversão das peças na solução preservativa. A distribuição, a penetração e a retenção foram melhores nas peças invertidas, quando comparadas àquelas não-invertidas na solução preservativa.

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