Consulta: subjectFacets:"Forest plantations"
Registros recuperados: 14
Data/hora: 01/06/2024 00:36:56

Características edafológicas y potencial productivo de Eucalyptus urophylla y E. grandis en Huimanguillo, Tabasco.
Provedor de dados: 32
Autores: Pérez Sandoval, Reyna.
Este trabajo se realizó en plantaciones establecidas por la empresa Forestaciones Operativas  Mexicanas (FOMEX), en el Municipio de Huimanguillo, Tabasco, con la finalidad de encontrar relaciones entre variables del suelo superficial (0-20 y 20-40cm) y el crecimiento de plantaciones de Eucalyptus urophylla y E. grandis. Como índice de crecimiento se utilizó índice de sitio (IS) y las variables edáficas estudiadas fueron: pH, materia orgánica, fósforo extractable, los cationes intercambiables: K, Ca y Mg. También se consideró la capacidad de intercambio catiónico, porcentaje de saturación de bases, porcentaje de saturación de aluminio, densidad aparente, nitrógeno total, capacidad de retención de humedad a capacidad de campo y textura. Se colectaron...
Palavras-chave: Plantaciones forestales; Suelo; Productividad; Eucalyptus; Indice de sitio; Forest plantations; Forest soils; Soil productivity; Eucalyptus; Site index; Maestría; Forestal.
Ano: 2010
URL: http://hdl.handle.net/10521/190

Organización territorial y reconversión forestal experiencia de la asociación de agroproductores forestales de Zacualpan, Veracruz, México.
Provedor de dados: 32
Autores: Romo Guzmán, Domingo.
En la investigación se analizó el proceso social que contempló como objetivo la creación de una organización territorial para la reconversión forestal, mediante el cambio de uso del suelo agrícola y pecuario, hacia el establecimiento y manejo de plantaciones forestales, prioritariamente  de Pino patula. A partir del año 2000 se llevó a cabo dicha transformación del patrón de uso del suelo, en el municipio de Zacualpan,  estado de Veracruz, México. El supuesto hipotético considera que las dinámicas participativas autogestionarias, sustentadas en objetivos de desarrollo de capacidades agroeconómicas y de amplificación de la biodiversidad de sistemas de manejo de recursos naturales con fines económicos y sociales; de manera general y estratégica contribuyen...
Palavras-chave: Organización; Plantaciones forestales; Apropiación territorial; Organization; Forest plantations; Territorial appropriation; Maestría; Desarrollo Rural.
Ano: 2010
URL: http://hdl.handle.net/10521/292

Características edafológicas y potencial productivo de Eucalyptus urophylla y E. grandis en Huimanguillo, Tabasco.
Provedor de dados: 32
Autores: Pérez Sandoval, Reyna.
Este trabajo se realizó en plantaciones establecidas por la empresa Forestaciones Operativas  Mexicanas (FOMEX), en el Municipio de Huimanguillo, Tabasco, con la finalidad de encontrar relaciones entre variables del suelo superficial (0-20 y 20-40cm) y el crecimiento de plantaciones de Eucalyptus urophylla y E. grandis. Como índice de crecimiento se utilizó índice de sitio (IS) y las variables edáficas estudiadas fueron: pH, materia orgánica, fósforo extractable, los cationes intercambiables: K, Ca y Mg. También se consideró la capacidad de intercambio catiónico, porcentaje de saturación de bases, porcentaje de saturación de aluminio, densidad aparente, nitrógeno total, capacidad de retención de humedad a capacidad de campo y textura. Se colectaron...
Palavras-chave: Plantaciones forestales; Suelo; Productividad; Eucalyptus; Indice de sitio; Forest plantations; Forest soils; Soil productivity; Eucalyptus; Site index; Maestría; Forestal.
Ano: 2010
URL: http://hdl.handle.net/10521/190

Thirty Years of Human Demography and Land-Use Change in the Atlantic Forest of Misiones, Argentina: an Evaluation of the Forest Transition Model
Provedor de dados: 7
Autores: Aide, T. Mitchell; University of Puerto Rico; tmaide@yahoo.com.
For many years, tropical and subtropical forests have been deforested for agriculture, grazing, and timber extraction. Nevertheless in the last decade, several publications have suggested that some regions of Latin America are showing a process of forest transition. Forest transition theory predicts that industrialization and urbanization will lead to the abandonment of marginal agriculture lands and the recovery of natural systems such as forests. However, there are many ecological, economic, and social factors that could act as barriers to ecosystem recovery.  To evaluate this hypothesis, we analyzed the socioeconomic and land-use changes during the last 30 years at the provincial and departmental level in the province of Misiones, Argentina. We...
Tipo: Peer-Reviewed Reports
Palavras-chave: Atlantic Forest; Forest plantations; Forest transition; Rural&amp;#8211; Urban migration.
Ano: 2008

Preparo de área para plantio de freijó (Cordia goeldiana).
Provedor de dados: 14
Autores: YARED, J. A. G.; MARQUES, L. C. T.; BRIENZA JUNIOR, S.; CARPANEZZI, A. A.; KANASHIRO, M.
bitstream/item/57637/1/CPATU-PA115.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Freijó; Preparo de área; Corid goeldiana; Spacing; Land clearing.; Espaçamento; Essência Florestal; Plantio.; Forest trees.; Forest plantations.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383288

Danos causados por diferentes níveis de desfolha artificial para simulação do ataque de formigas cortadeiras em Pinus taeda e Eucalyptus grandis
Provedor de dados: 190
Autores: Reis Filho, Wilson; Santos, Franciele dos; Strapasson, Priscila; Nickele, Mariane Aparecida.
A desfolha artificial permite mensurar a intensidade do dano devido à desfolha causada por insetos. No presente estudo, buscou-se avaliar os danos causados por formigas cortadeiras em plantios de Pinus taeda e Eucalyptus grandis com 30 dias de idade. Foi estabelecida uma classificação baseada em níveis de desfolha semelhantes aos causados por formigas cortadeiras. Para P. taeda, os níveis foram: N1: 50%, N2: 75%, N3: 100% e N4: 100% de desfolha, incluindo o corte do meristema apical. Para E. grandis, os níveis foram N1: 50%, N2: 75% e N3: 100% de desfolha, incluindo o corte do meristema apical. Após um ano, as mudas de P. taeda tiveram perdas em altura e diâmetro nos níveis de N2 a N4. Mudas de P. taeda desfolhadas no nível N4 apresentaram perdas de 37,0%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Níveis de dano; Plantios florestais; Pragas florestais. Damage levels; Forest plantations; Forest pests.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/175

Precision and relative efficiency of sampling methods in teak
Provedor de dados: 190
Autores: Miranda, Dirceu Lucio Carneiro; Francio, Jonas; Santos, Juliano de Paula; Sanquetta, Carlos Roberto; Corte, Ana Paula Dalla.
This study aimed to compare three sampling methods: fixed area, Bitterlich, and Prodan, regarding accuracy and relative efficiency to estimate the variables: diameter at 1.30 m above soil level (DBH), number of trees, basal area, and volume. The limit of error established was 10% at probability level of 95%, using 30 plots for each method. Circumference at 1.30 m above soil level was measured, for conversion in DBH, with total time counted since the plots installation until the last tree measured. The most accurate sampling was the fixed area method, for estimation of DBH and number of trees per hectare, whereas the Bitterlich method was the most accurate for estimation of basal area and volume. Bitterlich method proved to be more efficient for estimation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest inventory; Forest plantations; Tectona grandis Recursos Florestais; Engenharia Florestal; Inventário Florestal Inventário floresta; L Plantios florestais; Tectona grandis.
Ano: 2015
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/638

Soil fauna in initial planting of Eucalyptus under different alternatives to weed control
Provedor de dados: 190
Autores: Garlet, Juliana; Costa, Ervandil Corrêa; Boscardin, Jardel; Machado, Dayanna Nascimento; Pedron, Leandra; Machado, Leonardo Mortari.
The aim of this study was to investigate the effect of different chemical control of alternative weed in soil fauna in initial planting of Eucalyptus grandis. The treatments consisted of partial and full control of the weed vegetation. Collections were conducted through soil trap (pitfall). We collected 26,136 specimens, distributed in 13 taxonomic groups (Araneae, Blattodea, Chilopoda, Collembola, Coleoptera, Diplopoda, Diptera, Hemiptera, Hymenoptera, Termitoidea, Orthoptera, Opilione and young forms). The treatments with remaining weed vegetation presented higher values of evaluated indices.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical control; Forest plantations; Edaphic arthropods Recursos Florestais  Engenharia Florestal  Silvicultura  Proteção Florestal Controle químico; Plantação florestal; Artrópodos edáficos.
Ano: 2017
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/970

An Analysis of Global Timber Markets
Provedor de dados: 31
Autores: Sohngen,   Brent; Mendelsohn,   Robert; Sedjo,   Roger A.; Lyon,   Kenneth S.
This paper presents a model of global timber markets that captures the evolution of a broad array of forest resources and timber market margins over time. These margins include the inaccessible northern and tropical margins, plantation establishment, and timberland management. A baseline case is presented and discussed. Five alternative scenarios are then presented. These scenarios allow us to consider several important questions about timber market behavior and the future supply of industrial fiber: (1) What happens along the northern and the tropical inaccessible margins? (2) What role do timber plantations play? and (3) How do shifts in management intensity interact with market forces? The baseline case suggests that both prices and harvests rise over...
Tipo: Working or Discussion Paper
Palavras-chave: Global timber markets; Forest plantations; Model; Forecast; Resource /Energy Economics and Policy; Q10; Q21; Q23; Q24.
Ano: 1997
URL: http://purl.umn.edu/10449

Forestry in the Next Millennium: Challenges and Opportunities for the USDA Forest Service
Provedor de dados: 31
Autores: Binkley,   Clark S.
Throughout the globe, forestry faces predictable trends associated with the transition from reliance on natural forests to ones created through human stewardship. Laid over the ordinary economics of this transition are increases in the values of the environmental services that forests provide. The three general approaches to forest management--natural forest management, plantation forest management, and preserve management--are evaluated in this economic context. The USDA Forest Service has interesting opportunities to apply each approach, but doing so will require profound organizational changes.
Tipo: Working or Discussion Paper
Palavras-chave: Forestry; Forest Service; Economics; Environment; Timber; Forest plantations; Resource /Energy Economics and Policy; H41; H42; Q23; Q28.
Ano: 1999
URL: http://purl.umn.edu/10912

Potential for Carbon Forest Plantations in Marginal Timber Forests: The Case of Patagonia, Argentina
Provedor de dados: 31
Autores: Sedjo,   Roger A.
With the advent of the Kyoto Protocol and its recognition of the use of forestry activities and carbon sinks as acceptable tools for addressing the issue of the build-up of atmospheric carbon, the potential role of planted forests as a vehicle for carbon sequestration has taken on a new significance. Additionally, the emergence of tradable emission permits and now tradable carbon offsets provides a vehicle for financially capturing the benefits of carbon emission reductions and carbon offsetting activities. In a world where carbon sequestration has monetary value, investments in planted forests can be made with an eye to revenues to (at least two) joint outputs: timber and the carbon sequestration services. The first section of this paper examines the...
Tipo: Working or Discussion Paper
Palavras-chave: Carbon sequestration; Forest plantations; Carbon offsets; Present value; Kyoto Protocol; Argentina; Developing countries; Environmental Economics and Policy; Q15; Q20; Q23.
Ano: 1999
URL: http://purl.umn.edu/10661

Influence of mineral fertilization on edaphic fauna in Acacia auriculiformis (A. Cunn) plantations
Provedor de dados: 90
Autores: Ribeiro,Liliana Parente; Gama-Rodrigues,Emanuela Forestieri; Moço,Maria Kellen da Silva; Gama-Rodrigues,Antonio Carlos.
Fertilization and/or the accumulation of organic matter from plant residues can influence the composition of soil and litter community. The goal of this study was to evaluate the effects of P and K fertilization on total faunal and nematode faunal composition and richness in plant litter and soil for 360 days in an area reforested with Acacia auriculiformis (A. Cunn), located in the municipality of Conceição de Macabu in the State of Rio de Janeiro. For each treatment (fertilized and unfertilized plots), samples of litter and soil (to a depth of 5 cm) were collected and transferred into a Berlese-Tüllgren funnels for the extraction of fauna. Mesofauna and macrofauna were quantified, and the major taxa identified. Nematodes were extracted by centrifugal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil invertebrates; Nematode; Forest plantations; Litter.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000100004

Land cover changes affect soil chemical attributes in the Brazilian Amazon
Provedor de dados: 1
Autores: Machado, Murilo Rezende; Camara, Rodrigo; Sampaio, Paulo de Tarso Barbosa; Pereira, Marcos Gervasio; Ferraz, João Baptista Silva.
Forest plantations may minimize the effects of deforestation in the Amazon. However, there are differences among species in terms of their influences on soil recovery. The effects of monospecific plantations of Acacia mangium, Dipteryx odorata, Jacaranda copaia, Parkia decussata,and Swietenia macrophylla, and areas of pasture and native forest on the chemical soil attributes of the Brazilian Amazon were evaluated. One bulked soil sample was collected per plot (0.00-0.05, 0.05-0.10, and 0.10-0.30 m; three plots of 128 m2) in each area. No significant differences in most of the soil attributes were observed among the forest plantations. However, soil K+ and P were higher in the Swietenia macrophylla plantations, while higher values of Ca2+, sum of bases, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias Amazon deforestation; Edaphic attributes; Environmental reclamation; Forest plantations; Manejo e Conservação do Solo.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32689

Site index and soil properties in young plantations of Eucalyptus grandis and E. urophylla in Southeastern Mexico
Provedor de dados: 115
Autores: Delgado-Caballero,Carina E.; Gómez-Guerrero,Armando; Valdez-Lazalde,José R.; De los Santos-Posadas,Hector; Fierros-González,Aurelio M.; Horwath,William R.
Research on the ability of tropical soils to support fast-growing forests species is required to optimize, preserve and select lands for timber production. In this work site index (SI) of Eucalyptus grandis and E. urophylla plantations in Southeastern Mexico, was related to chemical and physical soil properties. Based on a joint model of SI vs. sand content, the fit suggests that SI improves as the sand content increases (p&lt;0.01). Sand content of 28% in the surface soil (0-5 cm) and 24% in the sub-surface soil (5-30 cm) is a desired minimum for establishing highly productive stands. The best SI conditions were found on sandy soils with a sand content of 65 %. Other variables, such as soil bulk density, N mineralization and organic matter were also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Forest plantations; Forest soils; Site productivity; Soil physical properties.
Ano: 2009
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000100007