| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
22/11/2002 |
|
Data da última atualização: |
22/11/2002 |
|
Autoria: |
SALDARRIAGA, J. G.; UHL, C. |
|
Título: |
Recovery of forest vegetation following slash-and-burn agriculture in the Upper Rio Negro |
|
Ano de publicação: |
1991 |
|
Fonte/Imprenta: |
In: GOMEZ-POMPA, A.; WHITMORE, T.C.; HADLEY, M. Rain forest regeneration and management. Paris: UNESCO/Parthenon Publishing, 1991. (Man and the biophere series, v.6). |
|
Páginas: |
p.303-312 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Changes in species composition, forest structure and biomass have been studied at 24 tropical forest sites along the Upper Rio Negro region of Colombia and Venezuela. Stands were selected from the tierra firme forests (non-flooded) to represent a chronosequence of succession following slash-and-burn agricultural practices. After abandonment, the number of species increases from early successional to mature forests. The speciescomposition of the mature forests depends on a small fraction of primary species that survive from early stages of succession and on the introduction of many primary species at later stages of succession. Small areas disturbed by slash-and-burn agriculture recover their original species composition, but the time required varies, dependingon the intensity and frequency of disturbance in the area. On a large scale, the forest is a mosaic of different aged patches and structural characteristics, with high variability among stands, depending on soils, micro-relief, species composition, and disturbance dynamics. Approximately 140-200 years is required for an abandoned farm to attain the biomass values comparable to those of a mature forest. Recovery is thus five to seven times longer in the Upper Rio Negro than in other tropical areas in South America. |
|
Thesagro: |
Conservação; Ecologia; Floresta Tropical; Manejo; Silvicultura. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01964naa a2200205 a 4500
001 1327859
005 2002-11-22
008 1991 bl uuuu u00u1 u #d
100 1 $aSALDARRIAGA, J. G.
245 $aRecovery of forest vegetation following slash-and-burn agriculture in the Upper Rio Negro
260 $c1991
300 $ap.303-312
520 $aChanges in species composition, forest structure and biomass have been studied at 24 tropical forest sites along the Upper Rio Negro region of Colombia and Venezuela. Stands were selected from the tierra firme forests (non-flooded) to represent a chronosequence of succession following slash-and-burn agricultural practices. After abandonment, the number of species increases from early successional to mature forests. The speciescomposition of the mature forests depends on a small fraction of primary species that survive from early stages of succession and on the introduction of many primary species at later stages of succession. Small areas disturbed by slash-and-burn agriculture recover their original species composition, but the time required varies, dependingon the intensity and frequency of disturbance in the area. On a large scale, the forest is a mosaic of different aged patches and structural characteristics, with high variability among stands, depending on soils, micro-relief, species composition, and disturbance dynamics. Approximately 140-200 years is required for an abandoned farm to attain the biomass values comparable to those of a mature forest. Recovery is thus five to seven times longer in the Upper Rio Negro than in other tropical areas in South America.
650 $aConservação
650 $aEcologia
650 $aFloresta Tropical
650 $aManejo
650 $aSilvicultura
700 1 $aUHL, C.
773 $tIn: GOMEZ-POMPA, A.; WHITMORE, T.C.; HADLEY, M. Rain forest regeneration and management. Paris: UNESCO/Parthenon Publishing, 1991. (Man and the biophere series$gv.6).
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Milho e Sorgo. |
|
Data corrente: |
17/04/2024 |
|
Data da última atualização: |
23/04/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 4 |
|
Autoria: |
VIANA, J. H. M.; COELHO, A. M.; THOMAZINI, A.; CARVALHO, M. P. F. de; FRANÇA, A. C. F.; CLEMENTE, E. de P. |
|
Afiliação: |
JOAO HERBERT MOREIRA VIANA, CNPMS; ANTONIO MARCOS COELHO, CNPMS; ANDRÉ THOMAZINI, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; MATHEUS PAULA FIALHO DE CARVALHO, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; ANA CAROLINA FERREIRA FRANÇA, UNIVERSIDADE FEDERAL DE SÃO JOÃO DEL-REI; ELIANE DE PAULA CLEMENTE ALMEIDA, CNPMS. |
|
Título: |
Dry matter production and nutrient extraction by three successive crops fertilized with serpentinite rock as a soil remineralizer. |
|
Ano de publicação: |
2024 |
|
Fonte/Imprenta: |
Observatorio de La Economia Latinoamerica, v. 22, n. 4, p. 1-17, 2024. |
|
DOI: |
https://doi.org/10.55905/oelv22n4-068 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The incorporation of new sources of fertilizers is important to of the food production security. The use of rock powders still needs investigation to address their agronomic efficiency and the safety for the users and for the consumers. This work aimed to study the dry matter production and the nutrient extraction after three consecutive crops, in two soils fertilized with serpentinite rock powder. The experiment was carried in a greenhouse, with three sequential crops, with seven treatments, two soils and four replications. After 40 days of growth, the whole plants were harvested and sent to measure the dry weight and for the chemical analyses. The use of the serpentinite did not increase the total dry matter biomass weight, compared to the fertilized controls. The magnesium extraction was not different between the control treatment with dolomitic limestone and the serpentinite treatment at higher dose for the clayed soil, indicating that the serpentinite was able to supply the magnesium for the plants in the experimental condition, and also a significant dose related effect suggests that the magnesium from the powder has been released. The use of the serpentinite also increased the extraction of other nutrients, like calcium, phosphorus, zinc and iron. |
|
Palavras-Chave: |
Pó de rocha. |
|
Thesagro: |
Fertilizante; Magnésio; Solo. |
|
Thesaurus NAL: |
Urochloa brizantha; Urochloa ruziziensis. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02126naa a2200265 a 4500
001 2163721
005 2024-04-23
008 2024 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.55905/oelv22n4-068$2DOI
100 1 $aVIANA, J. H. M.
245 $aDry matter production and nutrient extraction by three successive crops fertilized with serpentinite rock as a soil remineralizer.$h[electronic resource]
260 $c2024
520 $aThe incorporation of new sources of fertilizers is important to of the food production security. The use of rock powders still needs investigation to address their agronomic efficiency and the safety for the users and for the consumers. This work aimed to study the dry matter production and the nutrient extraction after three consecutive crops, in two soils fertilized with serpentinite rock powder. The experiment was carried in a greenhouse, with three sequential crops, with seven treatments, two soils and four replications. After 40 days of growth, the whole plants were harvested and sent to measure the dry weight and for the chemical analyses. The use of the serpentinite did not increase the total dry matter biomass weight, compared to the fertilized controls. The magnesium extraction was not different between the control treatment with dolomitic limestone and the serpentinite treatment at higher dose for the clayed soil, indicating that the serpentinite was able to supply the magnesium for the plants in the experimental condition, and also a significant dose related effect suggests that the magnesium from the powder has been released. The use of the serpentinite also increased the extraction of other nutrients, like calcium, phosphorus, zinc and iron.
650 $aUrochloa brizantha
650 $aUrochloa ruziziensis
650 $aFertilizante
650 $aMagnésio
650 $aSolo
653 $aPó de rocha
700 1 $aCOELHO, A. M.
700 1 $aTHOMAZINI, A.
700 1 $aCARVALHO, M. P. F. de
700 1 $aFRANÇA, A. C. F.
700 1 $aCLEMENTE, E. de P.
773 $tObservatorio de La Economia Latinoamerica$gv. 22, n. 4, p. 1-17, 2024.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
