| |
|
|
| Registros recuperados : 252 | |
| 167. |  | GUIMARAES, D. P.; ALBUQUERQUE, P. E. P. de; LANDAU, E. C.; BARROS, C. A. Impacto das mudanças climáticas sobre a evapotranspiração de referência em Sete Lagoas, MG. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, Belo Horizonte. Anais... Viçosa, MG: UFV; Sete Lagoas: Embrapa Milho e Sorgo, 2009. Não paginado. 1 CD-ROM. CBA 2009.| Biblioteca(s): Embrapa Agricultura Digital. |
|   |
| 168. | | GUIMARAES, D. P.; ALBUQUERQUE, P. E. P. de; LANDAU, E. C.; BARROS, C. A. Impacto das mudanças climáticas sobre a evapotranspiração de referência em Sete Lagoas, MG. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, Belo Horizonte. Mudanças climáticas, recursos hídricos e energia para uma agricultura sustentável: [trabalhos apresentados.]. Viçosa, MG: UFV; Sete Lagoas: Embrapa Milho e Sorgo, 2009. 1 CD-ROM.| Biblioteca(s): Embrapa Milho e Sorgo. |
|  |
| 169. | | GUIMARAES, D. P.; ALBUQUERQUE, P. E. P. de; LANDAU, E. C.; BARROS, C. A. Impacto das mudanças climáticas sobre a evapotranspiração de referência em Sete Lagoas, MG. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 16., 2009, Belo Horizonte. Mudanças climáticas, recursos hídricos e energia para uma agricultura sustentável: resumos. Belo Horizonte: SBA; Viçosa, MG: UFV; Sete Lagoas: Embrapa Milho e Sorgo, 2009. p. 113.| Biblioteca(s): Embrapa Milho e Sorgo. |
| |
| 177. | | LANDAU, E. C.; TAVARES, R. B. T.; GUIMARAES, D. P.; HIRSCH, A. Geoespacialização da amplitude térmica no Brasil. In: SIMPÓSIO INTERNACIONAL DE CLIMATOLOGIA, 3., 2009, Canela, RS. Mudanças de clima e extremos e avaliação de riscos futuros, planejamento e desenvolvimento sustentável. Canela: Sociedade Brasileira de Meteorologia, 2009. 1 CD-ROM.| Biblioteca(s): Embrapa Milho e Sorgo. |
| |
| Registros recuperados : 252 | |
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
23/08/2018 |
|
Data da última atualização: |
01/10/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
VILLA, P. M.; MARTINS, S. V.; OLIVEIRA NETO, S. N. de; RODRIGUES, A. C.; MARTORANO, L. G.; MONSANTO, L. D.; CANCIO, N. M.; GASTAUER, M. |
|
Afiliação: |
Pedro Manuel Villa, UFV/Foundation for the Conservation of Biodiversity; Sebastião Venâncio Martins, UFV; Silvio Nolasco de Oliveira Neto, UFV; Alice Cristina Rodrigues, UFV; LUCIETA GUERREIRO MARTORANO, CPATU; Luisa Delgado Monsanto, National Institute of Agricultural Research; Norman Mota Cancio, National Institute of Agricultural Research; Markus Gastauer, Instituto Tecnológico Vale. |
|
Título: |
Intensification of shifting cultivation reduces forest resilience in the northern Amazon. |
|
Ano de publicação: |
2018 |
|
Fonte/Imprenta: |
Forest Ecology and Management, v. 430, p. 312-320, 2018. |
|
DOI: |
10.1016/j.foreco.2018.08.014 |
|
Idioma: |
Português |
|
Conteúdo: |
Shifting cultivation is a traditional land-use system to ensure livelihood in the Northern Amazon. Here, we evaluated how intensification of shifting cultivation (SC) affects secondary forest recovery in the northern Amazon forest. To measure intensity of shifting cultivation, we used the number of previous SC cycles. We selected three study sites containing second-growth forest (SG) with different stand ages (5 and 10 years) after one, three or six SC cycles. Furthermore, we selected old-growth forest (OG) in each study site. In each selected SG and OG, three plots of 20×50m were established, totalizing 63 plots in the study area. In each plot, all trees, palms and lianas with diameter at breast height≥5 cm were tagged and identified to species level. We analyzed the effects of SC intensification and soil fertility on woody species richness, species composition and basal area using mixed effect models. Species richness and basal area, lower in SG than in OG, increased with regeneration time after abandonment, but reduced with intensification of SC. Community dissimilarities (Bray-Curtis distances) between OG and SG increased with the number of shifting cultivation cycles. Soil fertility differed between SG with different regeneration stages and reduced with number of SC cycles. We found that soil fertility and management intensity, i.e., number of previous SC cycles, explained pattern observed in richness, species composition and basal area equally good. Due to nutrient exports with crops and increasing nutrient leaching, soil fertility is expected to reduce with SC intensity. Therefore, our data indicate that intensification of SC reduces recovery of species richness, composition and basal area of SGs following productive periods. Thus, the intensification of SC reduces the resilience of SGs, turning this ancient form of land-use unsustainable. Environmental sustainability of SC may be achieved by extending fallow periods, limiting the maximum yield. To attend growing demands of indigenous and non-indigenous communities, we propose other alternatives of land-use such as permanent agroforestry systems. MenosShifting cultivation is a traditional land-use system to ensure livelihood in the Northern Amazon. Here, we evaluated how intensification of shifting cultivation (SC) affects secondary forest recovery in the northern Amazon forest. To measure intensity of shifting cultivation, we used the number of previous SC cycles. We selected three study sites containing second-growth forest (SG) with different stand ages (5 and 10 years) after one, three or six SC cycles. Furthermore, we selected old-growth forest (OG) in each study site. In each selected SG and OG, three plots of 20×50m were established, totalizing 63 plots in the study area. In each plot, all trees, palms and lianas with diameter at breast height≥5 cm were tagged and identified to species level. We analyzed the effects of SC intensification and soil fertility on woody species richness, species composition and basal area using mixed effect models. Species richness and basal area, lower in SG than in OG, increased with regeneration time after abandonment, but reduced with intensification of SC. Community dissimilarities (Bray-Curtis distances) between OG and SG increased with the number of shifting cultivation cycles. Soil fertility differed between SG with different regeneration stages and reduced with number of SC cycles. We found that soil fertility and management intensity, i.e., number of previous SC cycles, explained pattern observed in richness, species composition and basal area equally good. Due to nutrie... Mostrar Tudo |
|
Thesagro: |
Área Basal; Deterioração do Solo; Floresta Secundaria; Solo; Uso da Terra. |
|
Thesaurus NAL: |
Basal area; Land degradation; Secondary forests. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 03063naa a2200313 a 4500
001 2094415
005 2018-10-01
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.foreco.2018.08.014$2DOI
100 1 $aVILLA, P. M.
245 $aIntensification of shifting cultivation reduces forest resilience in the northern Amazon.$h[electronic resource]
260 $c2018
520 $aShifting cultivation is a traditional land-use system to ensure livelihood in the Northern Amazon. Here, we evaluated how intensification of shifting cultivation (SC) affects secondary forest recovery in the northern Amazon forest. To measure intensity of shifting cultivation, we used the number of previous SC cycles. We selected three study sites containing second-growth forest (SG) with different stand ages (5 and 10 years) after one, three or six SC cycles. Furthermore, we selected old-growth forest (OG) in each study site. In each selected SG and OG, three plots of 20×50m were established, totalizing 63 plots in the study area. In each plot, all trees, palms and lianas with diameter at breast height≥5 cm were tagged and identified to species level. We analyzed the effects of SC intensification and soil fertility on woody species richness, species composition and basal area using mixed effect models. Species richness and basal area, lower in SG than in OG, increased with regeneration time after abandonment, but reduced with intensification of SC. Community dissimilarities (Bray-Curtis distances) between OG and SG increased with the number of shifting cultivation cycles. Soil fertility differed between SG with different regeneration stages and reduced with number of SC cycles. We found that soil fertility and management intensity, i.e., number of previous SC cycles, explained pattern observed in richness, species composition and basal area equally good. Due to nutrient exports with crops and increasing nutrient leaching, soil fertility is expected to reduce with SC intensity. Therefore, our data indicate that intensification of SC reduces recovery of species richness, composition and basal area of SGs following productive periods. Thus, the intensification of SC reduces the resilience of SGs, turning this ancient form of land-use unsustainable. Environmental sustainability of SC may be achieved by extending fallow periods, limiting the maximum yield. To attend growing demands of indigenous and non-indigenous communities, we propose other alternatives of land-use such as permanent agroforestry systems.
650 $aBasal area
650 $aLand degradation
650 $aSecondary forests
650 $aÁrea Basal
650 $aDeterioração do Solo
650 $aFloresta Secundaria
650 $aSolo
650 $aUso da Terra
700 1 $aMARTINS, S. V.
700 1 $aOLIVEIRA NETO, S. N. de
700 1 $aRODRIGUES, A. C.
700 1 $aMARTORANO, L. G.
700 1 $aMONSANTO, L. D.
700 1 $aCANCIO, N. M.
700 1 $aGASTAUER, M.
773 $tForest Ecology and Management$gv. 430, p. 312-320, 2018.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
