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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
28/10/2021 |
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Data da última atualização: |
28/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
KRUCHELSKI, S.; TRAUTENMULLER, J. W.; DEISS, L.; TREVISAN, R.; CUBBAGE, F.; PORFIRIO-DA-SILVA, V.; MORAES, A. de. |
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Afiliação: |
SILVANO KRUCHELSKI, UFPR; JONATHAN WILLIAM TRAUTENMULLER, UFPR; LEONARDO DEISS, Ohio State University; RÔMULO TREVISAN, UFSM; FREDERICK CUBBAGE, North Carolina State University; VANDERLEY PORFIRIO DA SILVA, CNPF; ANIBAL DE MORAES, UFPR. |
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Título: |
Eucalyptus benthamii Maiden et Cambage growth and wood density in integrated crop-livestock systems. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Agroforestry Systems, v. 95, n. 8, p. 1577-1588, Dec. 2021. |
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DOI: |
https://doi.org/10.1007/s10457-021-00672-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Integrating trees in agricultural landscapes is a promising option to sustainably provide goods for society while increasing biodiversity, securing animal welfare, and generating profits for stakeholders. The choice of the species and knowing how timber quality is affected when trees are integrated to crop and/or livestock enterprises can provide additional insights into the usefulness of timber after harvest, and wood density is one of the most important properties in this regard. The present study aimed to evaluate how Eucalyptus benthamii growth and wood density are affected in integrated crop-livestock systems when compared to monoculture forestry 74 months after planting in subtropical environments. The integrated systems were in an alley cropping design where crop and/or grazed pasture were temporally rotated in between tree lines (14 9 2 m trees spacing), and those systems were compared to monoculture forestry (3 9 2 m spacing). Tree trunks (n = 60) were sampled in five diameter classes of each treatment by cutting disks in six positions of the trunk (0.1 m, 1.30 m, 25%, 50%, 75% and 90% of the total height) (n = 360). Trees growing in integrated systems increased trunk diameter at breast height by 24.7%, increased wood fiber production per tree by 17.9%, and produced wood 9.0% less dense than in the monoculture forestry system. Monoculture forestry increased tree height, and there was no difference of trunk volume among the production systems. The results suggest that integrated systems can produce timber with lower wood density, but faster individual tree growth than in forestry monocultures. Such a system can promote sustainable intensification of agricultural production, and enhance provision of complementary ecosystem services. MenosIntegrating trees in agricultural landscapes is a promising option to sustainably provide goods for society while increasing biodiversity, securing animal welfare, and generating profits for stakeholders. The choice of the species and knowing how timber quality is affected when trees are integrated to crop and/or livestock enterprises can provide additional insights into the usefulness of timber after harvest, and wood density is one of the most important properties in this regard. The present study aimed to evaluate how Eucalyptus benthamii growth and wood density are affected in integrated crop-livestock systems when compared to monoculture forestry 74 months after planting in subtropical environments. The integrated systems were in an alley cropping design where crop and/or grazed pasture were temporally rotated in between tree lines (14 9 2 m trees spacing), and those systems were compared to monoculture forestry (3 9 2 m spacing). Tree trunks (n = 60) were sampled in five diameter classes of each treatment by cutting disks in six positions of the trunk (0.1 m, 1.30 m, 25%, 50%, 75% and 90% of the total height) (n = 360). Trees growing in integrated systems increased trunk diameter at breast height by 24.7%, increased wood fiber production per tree by 17.9%, and produced wood 9.0% less dense than in the monoculture forestry system. Monoculture forestry increased tree height, and there was no difference of trunk volume among the production systems. The results suggest tha... Mostrar Tudo |
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Palavras-Chave: |
Agroforestry systems; Basic specific gravity; Competition; Environmentally protected area; Sistema agroflorestal; Specific wood mass. |
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Thesagro: |
Crescimento; Densidade da Madeira; Eucalipto; Silvicultura. |
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Thesaurus Nal: |
Eucalyptus benthamii; Silviculture. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02838naa a2200349 a 4500
001 2135699
005 2021-10-28
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10457-021-00672-0$2DOI
100 1 $aKRUCHELSKI, S.
245 $aEucalyptus benthamii Maiden et Cambage growth and wood density in integrated crop-livestock systems.$h[electronic resource]
260 $c2021
520 $aIntegrating trees in agricultural landscapes is a promising option to sustainably provide goods for society while increasing biodiversity, securing animal welfare, and generating profits for stakeholders. The choice of the species and knowing how timber quality is affected when trees are integrated to crop and/or livestock enterprises can provide additional insights into the usefulness of timber after harvest, and wood density is one of the most important properties in this regard. The present study aimed to evaluate how Eucalyptus benthamii growth and wood density are affected in integrated crop-livestock systems when compared to monoculture forestry 74 months after planting in subtropical environments. The integrated systems were in an alley cropping design where crop and/or grazed pasture were temporally rotated in between tree lines (14 9 2 m trees spacing), and those systems were compared to monoculture forestry (3 9 2 m spacing). Tree trunks (n = 60) were sampled in five diameter classes of each treatment by cutting disks in six positions of the trunk (0.1 m, 1.30 m, 25%, 50%, 75% and 90% of the total height) (n = 360). Trees growing in integrated systems increased trunk diameter at breast height by 24.7%, increased wood fiber production per tree by 17.9%, and produced wood 9.0% less dense than in the monoculture forestry system. Monoculture forestry increased tree height, and there was no difference of trunk volume among the production systems. The results suggest that integrated systems can produce timber with lower wood density, but faster individual tree growth than in forestry monocultures. Such a system can promote sustainable intensification of agricultural production, and enhance provision of complementary ecosystem services.
650 $aEucalyptus benthamii
650 $aSilviculture
650 $aCrescimento
650 $aDensidade da Madeira
650 $aEucalipto
650 $aSilvicultura
653 $aAgroforestry systems
653 $aBasic specific gravity
653 $aCompetition
653 $aEnvironmentally protected area
653 $aSistema agroflorestal
653 $aSpecific wood mass
700 1 $aTRAUTENMULLER, J. W.
700 1 $aDEISS, L.
700 1 $aTREVISAN, R.
700 1 $aCUBBAGE, F.
700 1 $aPORFIRIO-DA-SILVA, V.
700 1 $aMORAES, A. de
773 $tAgroforestry Systems$gv. 95, n. 8, p. 1577-1588, Dec. 2021.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Tipo/Formato |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
08/09/2020 |
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Data da última atualização: |
08/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
RODRIGUES, H. M.; VASQUES, G. de M.; OLIVEIRA, R. P. de; TAVARES, S. R. de L.; CEDDIA, M. B.; HERNANI, L. C. |
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Afiliação: |
HUGO MACHADO RODRIGUES, UFRRJ; GUSTAVO DE MATTOS VASQUES, CNPS; RONALDO PEREIRA DE OLIVEIRA, CNPS; SILVIO ROBERTO DE LUCENA TAVARES, CNPS; MARCOS BACIS CEDDIA, UFRRJ; LUIS CARLOS HERNANI, CNPS. |
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Título: |
Finding suitable transect spacing and sampling designs for accurate soil ECa mapping from EM38-MK2. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Soil Systems, v. 4, n. 3, 56, 2020. |
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DOI: |
https://doi.org/10.3390/soilsystems4030056 |
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Idioma: |
Inglês |
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Conteúdo: |
Finding an ideal sampling design is a crucial stage in detailed soil mapping to assure reasonable accuracy of resulting soil property maps. This study aimed to evaluate the influence of sampling designs and sample sizes on the quality of soil apparent electrical conductivity (ECa) maps from an electromagnetic sensor survey. Twenty-six (26) parallel transects were gathered in a 72-ha plot in Southeastern Brazil. Soil ECa measurements using an on-the-go electromagnetic induction sensor were taken every second using sensor vertical orientation. Two approaches were used to reduce the sample size and simulate kriging interpolations of soil ECa. Firstly, the number of transect lines was reduced by increasing the distance between them; thus, 26 transects with 40 m spacing; 13 with 80 m; 7 with 150 m; and 4 with 300 m. Secondly, random point selection and Douglas-Peucker algorithms were used to derive four reduced datasets by removing 25, 50, 75, and 95% of the points from the ECa survey dataset. Soil ECa was interpolated at 5 m output spatial resolution using ordinary kriging and the four datasets from each simulation (a total of twelve datasets). Map uncertainty was assessed by root mean square error and mean error metrics from 400 random samples previously selected for external map validation. Maps were evaluated on their uncertainty and spatial structure of variation. The transect elimination approach showed that maps produced with transect spacing up to 150 m could preserve the spatial structure of ECa variations. Douglas-Peucker results showed lower nugget values than random point simulations for all selected sample densities, except for a 95% point reduction. The soil ECa maps derived from the 75% reduced dataset (by random sampling or Douglas-Peucker) or from 13 transect lines (80 m spacing) showed reasonable accuracy (RMSE of validation circa 0.7) relative to the map interpolated from all survey points (RMSE of 0.5), suggesting that transect spacing of 80 m and reading intervals greater than one second can be used for improving the efficiency of on-the-go soil ECa surveys. MenosFinding an ideal sampling design is a crucial stage in detailed soil mapping to assure reasonable accuracy of resulting soil property maps. This study aimed to evaluate the influence of sampling designs and sample sizes on the quality of soil apparent electrical conductivity (ECa) maps from an electromagnetic sensor survey. Twenty-six (26) parallel transects were gathered in a 72-ha plot in Southeastern Brazil. Soil ECa measurements using an on-the-go electromagnetic induction sensor were taken every second using sensor vertical orientation. Two approaches were used to reduce the sample size and simulate kriging interpolations of soil ECa. Firstly, the number of transect lines was reduced by increasing the distance between them; thus, 26 transects with 40 m spacing; 13 with 80 m; 7 with 150 m; and 4 with 300 m. Secondly, random point selection and Douglas-Peucker algorithms were used to derive four reduced datasets by removing 25, 50, 75, and 95% of the points from the ECa survey dataset. Soil ECa was interpolated at 5 m output spatial resolution using ordinary kriging and the four datasets from each simulation (a total of twelve datasets). Map uncertainty was assessed by root mean square error and mean error metrics from 400 random samples previously selected for external map validation. Maps were evaluated on their uncertainty and spatial structure of variation. The transect elimination approach showed that maps produced with transect spacing up to 150 m could preserve the... Mostrar Tudo |
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Palavras-Chave: |
Geoestatística; Incerteza; Krigagem; Sensoriamento proximal do solo. |
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Thesagro: |
Sensoriamento Remoto. |
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Thesaurus NAL: |
Geostatistics; Kriging; Remote sensing; Uncertainty. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/215820/1/Finding-suitable-transect-spacing-and-sampling-designs-for-accurate-soil-2020.pdf
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Marc: |
LEADER 03005naa a2200301 a 4500
001 2124782
005 2020-09-08
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/soilsystems4030056$2DOI
100 1 $aRODRIGUES, H. M.
245 $aFinding suitable transect spacing and sampling designs for accurate soil ECa mapping from EM38-MK2.$h[electronic resource]
260 $c2020
520 $aFinding an ideal sampling design is a crucial stage in detailed soil mapping to assure reasonable accuracy of resulting soil property maps. This study aimed to evaluate the influence of sampling designs and sample sizes on the quality of soil apparent electrical conductivity (ECa) maps from an electromagnetic sensor survey. Twenty-six (26) parallel transects were gathered in a 72-ha plot in Southeastern Brazil. Soil ECa measurements using an on-the-go electromagnetic induction sensor were taken every second using sensor vertical orientation. Two approaches were used to reduce the sample size and simulate kriging interpolations of soil ECa. Firstly, the number of transect lines was reduced by increasing the distance between them; thus, 26 transects with 40 m spacing; 13 with 80 m; 7 with 150 m; and 4 with 300 m. Secondly, random point selection and Douglas-Peucker algorithms were used to derive four reduced datasets by removing 25, 50, 75, and 95% of the points from the ECa survey dataset. Soil ECa was interpolated at 5 m output spatial resolution using ordinary kriging and the four datasets from each simulation (a total of twelve datasets). Map uncertainty was assessed by root mean square error and mean error metrics from 400 random samples previously selected for external map validation. Maps were evaluated on their uncertainty and spatial structure of variation. The transect elimination approach showed that maps produced with transect spacing up to 150 m could preserve the spatial structure of ECa variations. Douglas-Peucker results showed lower nugget values than random point simulations for all selected sample densities, except for a 95% point reduction. The soil ECa maps derived from the 75% reduced dataset (by random sampling or Douglas-Peucker) or from 13 transect lines (80 m spacing) showed reasonable accuracy (RMSE of validation circa 0.7) relative to the map interpolated from all survey points (RMSE of 0.5), suggesting that transect spacing of 80 m and reading intervals greater than one second can be used for improving the efficiency of on-the-go soil ECa surveys.
650 $aGeostatistics
650 $aKriging
650 $aRemote sensing
650 $aUncertainty
650 $aSensoriamento Remoto
653 $aGeoestatística
653 $aIncerteza
653 $aKrigagem
653 $aSensoriamento proximal do solo
700 1 $aVASQUES, G. de M.
700 1 $aOLIVEIRA, R. P. de
700 1 $aTAVARES, S. R. de L.
700 1 $aCEDDIA, M. B.
700 1 $aHERNANI, L. C.
773 $tSoil Systems$gv. 4, n. 3, 56, 2020.
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