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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
29/10/2021 |
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Data da última atualização: |
05/04/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
IBARR, M. A.; ZANATTA, J. A.; DIECKOW, J.; RACHWAL, M. F. G.; RIBEIRO, R. H.; CARDOSO, D. J.; RAMALHO, B.; STAHL, J. |
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Afiliação: |
MARIANA ALVES IBARR, Programa de Pós-Graduação em Ciência do Solo, UFPR; JOSILEIA ACORDI ZANATTA, CNPF; JEFERSON DIECKOW, UFPR; MARCOS FERNANDO GLUCK RACHWAL, CNPF; RICARDO HENRIQUE RIBEIRO, Programa de Pós-Graduação em Ciência do Solo, UFPR; DENISE JETON CARDOSO, CNPF; BRUNA RAMALHO, Programa de Pós-Graduação em Ciência do Solo, UFPR; JAMES STAHL, Klabin S.A. |
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Título: |
Changes in soil carbon and nitrogen stocks after conversion of subtropical natural forest to loblolly pine plantations. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
European Journal of Forest Research, v. 141, p. 31-42, Feb. 2022. |
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DOI: |
https://doi.org/10.1007/s10342-021-01424-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Pinus plantations have increased in Brazil, and native forest areas have been converted for timber production. The clearing and the long-term loblolly pine (Pinus taeda L.) land-use efects on soil carbon and nitrogen stocks were evaluated in a natural broadleaved forest and in loblolly pine sites cultivated for 29, 35, 38 and 49 years, as well the soil contribution as ecosystem carbon pool. According to the exponential-decay model ftted to changes in carbon stock, the initial soil carbon stock of 200 Mg ha -1 to a depth of 100 cm in the natural forest decreased by 36% over 49 years of pine cultivation (around 72.4 Mg ha−1 of C). Around two-thirds of this decrease occurred in the top 30 cm of the soil and intensively in the frst 12 years of cultivation, but slowly faded as carbon stock tended to reach a new steady state after approximately 49 years of cultivation. The soil nitrogen stock in the natural forest was 14.2 Mg ha -1 to a depth of 100 cm and decreased by 36% over the 49 years. This decrease was linear according to the ftted model, especially in the top 30 cm where nitrogen decline was 83% and was proportionally more intense than the carbon decline. Despite the soil carbon decrease, soil remained the largest carbon reservoir in the ecosystem for the growing rotation time of loblolly pine in this region. |
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Palavras-Chave: |
Biomassa florestal; Forest foor; Tree biomass. |
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Thesagro: |
Matéria Orgânica; Pinus Taeda; Solo; Uso da Terra. |
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Thesaurus Nal: |
Land use change; Soil organic matter. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02314naa a2200325 a 4500
001 2135725
005 2022-04-05
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10342-021-01424-6$2DOI
100 1 $aIBARR, M. A.
245 $aChanges in soil carbon and nitrogen stocks after conversion of subtropical natural forest to loblolly pine plantations.$h[electronic resource]
260 $c2022
520 $aPinus plantations have increased in Brazil, and native forest areas have been converted for timber production. The clearing and the long-term loblolly pine (Pinus taeda L.) land-use efects on soil carbon and nitrogen stocks were evaluated in a natural broadleaved forest and in loblolly pine sites cultivated for 29, 35, 38 and 49 years, as well the soil contribution as ecosystem carbon pool. According to the exponential-decay model ftted to changes in carbon stock, the initial soil carbon stock of 200 Mg ha -1 to a depth of 100 cm in the natural forest decreased by 36% over 49 years of pine cultivation (around 72.4 Mg ha−1 of C). Around two-thirds of this decrease occurred in the top 30 cm of the soil and intensively in the frst 12 years of cultivation, but slowly faded as carbon stock tended to reach a new steady state after approximately 49 years of cultivation. The soil nitrogen stock in the natural forest was 14.2 Mg ha -1 to a depth of 100 cm and decreased by 36% over the 49 years. This decrease was linear according to the ftted model, especially in the top 30 cm where nitrogen decline was 83% and was proportionally more intense than the carbon decline. Despite the soil carbon decrease, soil remained the largest carbon reservoir in the ecosystem for the growing rotation time of loblolly pine in this region.
650 $aLand use change
650 $aSoil organic matter
650 $aMatéria Orgânica
650 $aPinus Taeda
650 $aSolo
650 $aUso da Terra
653 $aBiomassa florestal
653 $aForest foor
653 $aTree biomass
700 1 $aZANATTA, J. A.
700 1 $aDIECKOW, J.
700 1 $aRACHWAL, M. F. G.
700 1 $aRIBEIRO, R. H.
700 1 $aCARDOSO, D. J.
700 1 $aRAMALHO, B.
700 1 $aSTAHL, J.
773 $tEuropean Journal of Forest Research$gv. 141, p. 31-42, Feb. 2022.
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Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
05/10/2010 |
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Data da última atualização: |
30/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BALDI, F.; ALBUQUERQUE, L. G.; ALENCAR, M. M. de. |
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Afiliação: |
FERNANDO BALDI, UNESP/JABOTICABAL; LUCIA G. ALBUQUERQUE, UNESP/JABOTICABAL; MAURICIO MELLO DE ALENCAR, CPPSE. |
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Título: |
Random regression models on Legendre polynomials to estimate genetic parameters for weights from birth to adult age in Canchim cattle. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 127, n. 4, p. 289-299, 2010 |
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Idioma: |
Português |
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Conteúdo: |
The objective of this work was to estimate covariance functions for direct and maternal genetic effects, animal and maternal permanent environmental effects, and subsequently, to derive relevant genetic parameters for growth traits in Canchim cattle. Data comprised 49 011 weight records on 2435 females from birth to adult age. The model of analysis included fixed effects of contemporary groups (year and month of birth and at weighing) and age of dam as quadratic covariable. Mean trends were taken into account by a cubic regression on orthogonal polynomials of animal age. Residual variances were allowed to vary and were modelled by a step function with 1, 4 or 11 classes based on animal's age. The model fitting four classes of residual variances was the best. A total of 12 random regression models from second to seventh order were used to model direct and maternal genetic effects, animal and maternal permanent environmental effects. The model with direct and maternal genetic effects, animal and maternal permanent environmental effects fitted by quadric, cubic, quintic and linear Legendre polynomials, respectively, was the most adequate to describe the covariance structure of the data. Estimates of direct and maternal heritability obtained by multi-trait (seven traits) and random regression models were very similar. Selection for higher weight at any age, especially after weaning, will produce an increase in mature cow weight. The possibility to modify the growth curve in Canchim cattle to obtain animals with rapid growth at early ages and moderate to low mature cow weight is limited. MenosThe objective of this work was to estimate covariance functions for direct and maternal genetic effects, animal and maternal permanent environmental effects, and subsequently, to derive relevant genetic parameters for growth traits in Canchim cattle. Data comprised 49 011 weight records on 2435 females from birth to adult age. The model of analysis included fixed effects of contemporary groups (year and month of birth and at weighing) and age of dam as quadratic covariable. Mean trends were taken into account by a cubic regression on orthogonal polynomials of animal age. Residual variances were allowed to vary and were modelled by a step function with 1, 4 or 11 classes based on animal's age. The model fitting four classes of residual variances was the best. A total of 12 random regression models from second to seventh order were used to model direct and maternal genetic effects, animal and maternal permanent environmental effects. The model with direct and maternal genetic effects, animal and maternal permanent environmental effects fitted by quadric, cubic, quintic and linear Legendre polynomials, respectively, was the most adequate to describe the covariance structure of the data. Estimates of direct and maternal heritability obtained by multi-trait (seven traits) and random regression models were very similar. Selection for higher weight at any age, especially after weaning, will produce an increase in mature cow weight. The possibility to modify the growth curve in Canc... Mostrar Tudo |
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Palavras-Chave: |
Covariance functions; Growth curve; Legendre polynomials. |
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Thesaurus NAL: |
beef cattle. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02257naa a2200193 a 4500
001 1863661
005 2023-06-30
008 2010 bl uuuu u00u1 u #d
100 1 $aBALDI, F.
245 $aRandom regression models on Legendre polynomials to estimate genetic parameters for weights from birth to adult age in Canchim cattle.$h[electronic resource]
260 $c2010
520 $aThe objective of this work was to estimate covariance functions for direct and maternal genetic effects, animal and maternal permanent environmental effects, and subsequently, to derive relevant genetic parameters for growth traits in Canchim cattle. Data comprised 49 011 weight records on 2435 females from birth to adult age. The model of analysis included fixed effects of contemporary groups (year and month of birth and at weighing) and age of dam as quadratic covariable. Mean trends were taken into account by a cubic regression on orthogonal polynomials of animal age. Residual variances were allowed to vary and were modelled by a step function with 1, 4 or 11 classes based on animal's age. The model fitting four classes of residual variances was the best. A total of 12 random regression models from second to seventh order were used to model direct and maternal genetic effects, animal and maternal permanent environmental effects. The model with direct and maternal genetic effects, animal and maternal permanent environmental effects fitted by quadric, cubic, quintic and linear Legendre polynomials, respectively, was the most adequate to describe the covariance structure of the data. Estimates of direct and maternal heritability obtained by multi-trait (seven traits) and random regression models were very similar. Selection for higher weight at any age, especially after weaning, will produce an increase in mature cow weight. The possibility to modify the growth curve in Canchim cattle to obtain animals with rapid growth at early ages and moderate to low mature cow weight is limited.
650 $abeef cattle
653 $aCovariance functions
653 $aGrowth curve
653 $aLegendre polynomials
700 1 $aALBUQUERQUE, L. G.
700 1 $aALENCAR, M. M. de
773 $tJournal of Animal Breeding and Genetics$gv. 127, n. 4, p. 289-299, 2010
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