Emprego de um modelo de crescimento e produção para determinação da rotação em povoamentos de eucalipto

Resende, Robson Rodrigues; Vale, Antonio Bartolomeu do; Soares, Thelma Shirlen; Silva, Márcio Lopes da; Couto, Laércio; Vale, Rodrigo Silva do

doi:10.1590/s0100-67622004000200008

Cited by 11 publications

(13 citation statements)

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“…, Resende et al . ). Most tree plantations were established on cleared forests initially designated for agricultural fields, except for one eucalypt stand (PE2) established on old pastureland.…”

Section: Methodsmentioning

confidence: 97%

“…As a consequence, a wide range of native plants (trees, shrubs, lianas, and herbs) and animals (e.g., spiders, frogs, birds; Fonseca et al 2009) have colonized the stands. This form of management is unusual for the region; typical plantations include monocultures larger than 2 ha, with harvesting cycles of 7-20 yr (Mainardi et al 1996, Resende et al 2004. Most tree plantations were established on cleared forests initially designated for agricultural fields, except for one eucalypt stand (PE2) established on old pastureland.…”

Section: Methodsmentioning

confidence: 99%

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Changes in Macrofungal Communities Following Forest Conversion into Tree Plantations in Southern Brazil

et al. 2015

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Conversion of diverse native forests to tree monocultures remains an ongoing, worldwide threat to biodiversity. Although the effects of forest conversion have been studied in a wide range of taxonomic groups, the effects on macrofungal communities remain poorly understood. We sampled macrofungal fruiting bodies in the National Forest of São Francisco de Paula in Southern Brazil over 12 months in four different forest habitats: native Araucaria angustifolia forest, A. angustifolia plantation, Pinus taeda or P. elliottii plantation, and Eucalyptus saligna plantation. The distribution of macrofungal species in different functional groups varied among habitats: the macrofungal species composition of the A. angustifolia plantation was more similar to that of the native forest, while the exotic Pinus or Eucalyptus plantations were less similar to the native forest. The conversion of native forest to exotic tree plantations reduced the number of macrofungal decomposer species, probably due to changes in substrate availability and quality. We conclude that fungal diversity and ecosystem functionality require the preservation of native, mature forests and suggest a shift of Brazilian forestry guidelines to encourage the plantations of native species instead of exotics.Abstract in Portuguese is available with online material.

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Section: Methodsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Changes in Macrofungal Communities Following Forest Conversion into Tree Plantations in Southern Brazil

et al. 2015

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“…Aplicações desse modelo são encontradas para povoamentos de eucalipto não desbastados, como, por exemplo, os trabalhos de Cruz et al (2008), Resende et al (2004) e Santana et al (2005).…”

Section: Introductionunclassified

SISTEMA DE CRESCIMENTO E PRODUÇÃO PARA POVOAMENTOS DE Pinus taeda NA REGIÃO NORTE DE SANTA CATARINA

Nascimento

Dias

Filho

et al. 2015

CERNE

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SISTEMA DE CRESCIMENTO E PRODUÇÃO PARA POVOAMENTOS DE A SYSTEM FOR Pinus taeda GROWTH AND YIELD IN THE NORTH OF SANTA CATARINAAbSTRACT: The objective of this study was to test different models for fitting site index curves and evaluat the Clutter model for predicting Pinus taeda growth and yield in the northern State of Santa Catarina. The dominant height data were obtained from 216 plots measured in 2009, with an area of 400 m². To fit the Clutter model we used data from permanent plots, conducted between 2004 and 2008 in areas aged between 5 and 34 years. The coefficient of determination (R² adj ), standard error of estimate (S yx ), standard error of estimate in percentage (S yx %) and residual percentage distribution were the statistics used to select the best model. The Silva-Bailey model was the most appropriated to represent site index curves, while the Clutter model performed well for estimating the growth and yield (m³ . ha -1 ), from a statistical and biological point of view.

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“…In the studies conducted by Paula et al (2013) and Resende et al (2004) in forest monocultures of Eucalyptus sp. planted at denser spacing, TTA ranged from 48 to 59 months depending on the site index of the area.…”

Section: Technical Thinning Age (Tta)mentioning

confidence: 99%

Accumulation of carbon and age of thinning of the tree component in agroforestry systems

Villanova

Jacovine

Torres

et al. 2018

Agraria

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Agroforestry systems (AFS) are considered large sinks of greenhouse gases (GHG) in the atmosphere. However, little is known about the dynamics of carbon accumulation in tree individuals over the years and the Age Thinning Technique (ATT) to potentialize GHG mitigation. The objective of the study was to predict the growth in carbon and determine the age thinning Technique of the tree component in 3 AFS in the municipality of Viçosa, MG, Brazil, in which System A is composed of eucalypt (Eucalyptus saligna) + pasture (Brachiaria decumbens) and systems B and C with eucalypt (Eucalyptus urophylla x Eucalyptus grandis) + pasture (Brachiaria decumbens). The Gompertz and Logistic models were employed to predict the timber volume and carbon growth. The ATT was determined based on the maximum productivity in timber volume per unit area. The curve asymptotic values of the systems A, B and C were 450, 221 and 226 m 3 ha -1 for the volume and 104, 51 and 52 MgC ha -1 for the carbon, respectively. Stabilization of carbon accumulation will occur close to 100 months for systems A and B and at 80 months for system C. As the ATT ranged 64-80 months, the thinning is recommended before this age to promote the carbon accumulation of the remaining arboreal individuals.Key words: growth; crop-livestock-forest; modeling; production; prognosis Acúmulo de carbono e idade técnica de desbaste do componente arbóreo em sistemas agroflorestais RESUMO: Os sistemas agroflorestais (SAFs) são considerados grandes sumidouros de gases de efeito estufa (GEE) da atmosfera. No entanto, pouco se conhece sobre a dinâmica de acúmulo de carbono nos indivíduos arbóreos ao longo dos anos e a Idade Técnica de Desbaste (ITD) para potencializar a mitigação dos GEE. O objetivo do estudo foi prognosticar o acúmulo de carbono e determinar a idade técnica de desbaste do componente arbóreo em 3 SAFs no município de Viçosa -MG. O Sistema A é composto por eucalipto (Eucalyptus saligna) + pastagem (Brachiaria decumbens) e os Sistemas B e C com eucalipto (Eucalyptus urophylla x Eucalyptus grandis) + pastagem (Brachiaria decumbens). Empregou-se os modelos Gompertz e Logístico para projetar o volume e carbono. A ITD foi determinada baseando-se na máxima produtividade em volume de madeira por unidade de área. O valor assintótico da curva dos sistemas A, B e C foi de 450, 221 e 226 m 3 ha -1 para volume e 104, 51 e 52 MgC ha -1 para carbono, respectivamente. A estabilização do acúmulo de carbono ocorrerá próximo aos 100 meses para os sistemas A e B e aos 80 meses para o sistema C. Como a ITD variou de 64 a 80 meses, recomenda-se o desbaste previamente a esta idade para favorecer o acúmulo de carbono dos indivíduos arbóreos remanescentes.Palavras-chave: crescimento; lavoura-pecuária-floresta; modelagem; produção; prognose Accumulation of carbon and age of thinning of the tree component in agroforestry systemsRev. Bras. Cienc. Agrar., Recife, v.13, n.2, e5526, 2018 2/6

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Emprego de um modelo de crescimento e produção para determinação da rotação em povoamentos de eucalipto

Cited by 11 publications

References 1 publication

Changes in Macrofungal Communities Following Forest Conversion into Tree Plantations in Southern Brazil

Changes in Macrofungal Communities Following Forest Conversion into Tree Plantations in Southern Brazil

SISTEMA DE CRESCIMENTO E PRODUÇÃO PARA POVOAMENTOS DE Pinus taeda NA REGIÃO NORTE DE SANTA CATARINA

Accumulation of carbon and age of thinning of the tree component in agroforestry systems

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