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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril; Embrapa Florestas; Embrapa Unidades Centrais. |
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Data corrente: |
18/10/2018 |
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Data da última atualização: |
13/12/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TONINI, H.; SCHWENGBER, D. R.; MORALES, M. M.; MAGALHÃES, C. A. de S.; OLIVEIRA, J. M. F. de. |
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Afiliação: |
HELIO TONINI, CPPSUL; DALTON ROBERTO SCHWENGBER, CPAF-RR; MARINA MOURA MORALES, CNPF; CIRO AUGUSTO DE SOUZA MAGALHAES, CPAMT; JANE MARIA FRANCO DE OLIVEIRA, CPAF-RR. |
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Título: |
Growth, biomass, and energy quality of Acacia mangium timber grown at different spacings. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 7, p. 791-799, July 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for energy purposes. The widest spacing (3.0x3.0 m) provides better individual growth, and the narrowest one (2.0x2.0 m) produces smaller trees, but with the highest percentage of dry biomass in the trunk, and can show the best energy potential at a rotation age from 40 to 50 months. |
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Palavras-Chave: |
Acúmulo de biomassa; Amazon; Biomass accumulation; Energy productivity; Produção de energia; Roraima. |
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Thesagro: |
Reflorestamento. |
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Thesaurus Nal: |
Amazonia; Brazil; Forest plantations. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/184575/1/Growth-biomass-and-energy-quality.pdf
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Marc: |
LEADER 01907naa a2200289 a 4500
001 2101393
005 2018-12-13
008 2018 bl uuuu u00u1 u #d
100 1 $aTONINI, H.
245 $aGrowth, biomass, and energy quality of Acacia mangium timber grown at different spacings.$h[electronic resource]
260 $c2018
520 $aThe objective of this work was to assess the effect of spacing on the growth, biomass allocation, and wood quality for energy purposes of Acacia magium. A randomized complete block design was carried out with three replicates and five treatments consisting of trees planted at different spacings: 2.0x2.0, 2.5x2.5, 3.0x2.0, 3.0x2.5, and 3.0x3.0 m. At 67 months after planting, the following species parameters were evaluated: performance (mortality, diameter growth, height, bark factor, and bark and biomass volume yield) and wood energy quality (basic density, higher-calorific value, ash, fixed carbon, and volatile materials) through the analysis of variance. Plant spacing did not affect volume and biomass production per hectare nor wood quality for energy purposes. The widest spacing (3.0x3.0 m) provides better individual growth, and the narrowest one (2.0x2.0 m) produces smaller trees, but with the highest percentage of dry biomass in the trunk, and can show the best energy potential at a rotation age from 40 to 50 months.
650 $aAmazonia
650 $aBrazil
650 $aForest plantations
650 $aReflorestamento
653 $aAcúmulo de biomassa
653 $aAmazon
653 $aBiomass accumulation
653 $aEnergy productivity
653 $aProdução de energia
653 $aRoraima
700 1 $aSCHWENGBER, D. R.
700 1 $aMORALES, M. M.
700 1 $aMAGALHÃES, C. A. de S.
700 1 $aOLIVEIRA, J. M. F. de
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, n. 7, p. 791-799, July 2018.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
01/02/2018 |
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Data da última atualização: |
01/02/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
CARVALHO, J. C. B. de; ESPINDOLA, C. R.; ALVES, M. C.; GREGO, C. R.; VIEIRA, S. R. |
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Afiliação: |
JOSEANE CARINA BORGES DE CARVALHO, Secretaria da Educação do Estado de São Paulo; CARLOS ROBERTO ESPINDOLA, IG/Unicamp; MARLENE CRISTINA ALVES, Unesp; CELIA REGINA GREGO, CNPTIA; SIDNEY ROSA VIEIRA. |
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Título: |
Spatial analysis of soil physical attributes from a degraded area under different types of management. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
African Journal of Environmental Science and Technology, v. 11, n. 9, p. 486-498, Sept. 2017. |
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DOI: |
10.5897/AJEST2016.2256 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to analyze the spatial variability of soil aggregates, porosity and density under five different land-uses and management conditions (degraded substrate - SD; degraded substrate with sewage sludge and Eucalyptus crop - SDLE; soil under pasture SP; capoeira under regeneration - SR; and soil under cerrado - SC). Total porosity (m3.m-3) and density (Mg m-3) of the soil; the mean weight diameter (MWD, mm) of the aggregates; and the percentage of aggregates resistant to rainfall were evaluated. The date of soil was analyzed with descriptive statistics for initial exploration and geostatistics, to analyze the spatial variability. There was spatial dependency and the parameter adjust range varied from 8 to 12 m under the treatments SD and SR for the aggregates and SR for macroporosity, total porosity and soil density. There was spatial dependency also under SP, for the aggregates, microporosity, and total porosity; under SC, for the aggregates; and under SDLE, for microporosity. Soil data with spatial dependence in the field were characterized both by high and low values in the same area. Therefore it is not adequate to consider these areas as homogeneous for future experiments and agricultural activities. |
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Palavras-Chave: |
Análise espacial; Geoestatística; Spatial variability. |
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Thesaurus NAL: |
Geostatistics; Soil aggregates. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172002/1/AP-Spatial-analysis-Grego-etal.pdf
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Marc: |
LEADER 02028naa a2200241 a 4500
001 2086890
005 2018-02-01
008 2017 bl uuuu u00u1 u #d
024 7 $a10.5897/AJEST2016.2256$2DOI
100 1 $aCARVALHO, J. C. B. de
245 $aSpatial analysis of soil physical attributes from a degraded area under different types of management.$h[electronic resource]
260 $c2017
520 $aThe objective of this work was to analyze the spatial variability of soil aggregates, porosity and density under five different land-uses and management conditions (degraded substrate - SD; degraded substrate with sewage sludge and Eucalyptus crop - SDLE; soil under pasture SP; capoeira under regeneration - SR; and soil under cerrado - SC). Total porosity (m3.m-3) and density (Mg m-3) of the soil; the mean weight diameter (MWD, mm) of the aggregates; and the percentage of aggregates resistant to rainfall were evaluated. The date of soil was analyzed with descriptive statistics for initial exploration and geostatistics, to analyze the spatial variability. There was spatial dependency and the parameter adjust range varied from 8 to 12 m under the treatments SD and SR for the aggregates and SR for macroporosity, total porosity and soil density. There was spatial dependency also under SP, for the aggregates, microporosity, and total porosity; under SC, for the aggregates; and under SDLE, for microporosity. Soil data with spatial dependence in the field were characterized both by high and low values in the same area. Therefore it is not adequate to consider these areas as homogeneous for future experiments and agricultural activities.
650 $aGeostatistics
650 $aSoil aggregates
653 $aAnálise espacial
653 $aGeoestatística
653 $aSpatial variability
700 1 $aESPINDOLA, C. R.
700 1 $aALVES, M. C.
700 1 $aGREGO, C. R.
700 1 $aVIEIRA, S. R.
773 $tAfrican Journal of Environmental Science and Technology$gv. 11, n. 9, p. 486-498, Sept. 2017.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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