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Registro Completo
Biblioteca(s): |
Embrapa Acre. |
Data corrente: |
03/07/2007 |
Data da última atualização: |
28/07/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
OLIVEIRA, M. V. N. d'. |
Afiliação: |
MARCUS VINICIO NEVES D OLIVEIRA, CPAF-AC. |
Título: |
Artificial regeneration in gaps and skidding trails after mechanised forest exploitation in Acre, Brazil. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Forest Ecology and Management, Amsterdam, v. 127, n. 1/3, p. 67-76, March 2000. |
ISSN: |
0378-1127 (impresso) |
DOI: |
10.1016/S0378-1127(99)00117-6. |
Idioma: |
Inglês |
Conteúdo: |
The natural regeneration of some desirable species under exploitation pressure in Amazon is often very poor or non-existent. The traditional techniques of enrichment planting have presented low performance of the planted seedlings and high costs for its implementation. This study analyzes the first 5 years of growth and survival of five tropical tree species (Bertholletia excelsa, Ceiba pentandra, Torresia acreana, Swietenia macrophylla and Cedrela fissilis) planted in skidding trails and exploitation gaps. The basic planting technique consisted in using the cleared areas after forest harvesting for the establishment of seedlings of species ecologically adapted to the gap environment. The study was carried out in the EMBRAPA-CPAF-ACRE (Agroforestry Research Centre of Acre) in Acre State in West Amazon. The diameter increment varied from 0.30 cm year?1 for Bertholletia to 0.52 cm year?1 for Swietenia and Torresia. After 5 years the height growth was similar for all species around 3.0 m. In the first year Bertholletia presented a high mortality, around 80%, caused by severe predation by rodents. Ceiba also presented a high mortality after the second year of planting probably due the canopy closure. The best survival percentage was presented by Torresia, over 90%. The Meliaceae (Swietenia and Cedrela) species had a similar survival, around 70 to 75%. The Hypsipyla grandella attack was more severe in Cedrela than in Swietenia, but in both cases (9.37 and 31% after 7 and 5 years respectively for Swietenia and Cedrela) was still low when compared with other enrichment plantings. MenosThe natural regeneration of some desirable species under exploitation pressure in Amazon is often very poor or non-existent. The traditional techniques of enrichment planting have presented low performance of the planted seedlings and high costs for its implementation. This study analyzes the first 5 years of growth and survival of five tropical tree species (Bertholletia excelsa, Ceiba pentandra, Torresia acreana, Swietenia macrophylla and Cedrela fissilis) planted in skidding trails and exploitation gaps. The basic planting technique consisted in using the cleared areas after forest harvesting for the establishment of seedlings of species ecologically adapted to the gap environment. The study was carried out in the EMBRAPA-CPAF-ACRE (Agroforestry Research Centre of Acre) in Acre State in West Amazon. The diameter increment varied from 0.30 cm year?1 for Bertholletia to 0.52 cm year?1 for Swietenia and Torresia. After 5 years the height growth was similar for all species around 3.0 m. In the first year Bertholletia presented a high mortality, around 80%, caused by severe predation by rodents. Ceiba also presented a high mortality after the second year of planting probably due the canopy closure. The best survival percentage was presented by Torresia, over 90%. The Meliaceae (Swietenia and Cedrela) species had a similar survival, around 70 to 75%. The Hypsipyla grandella attack was more severe in Cedrela than in Swietenia, but in both cases (9.37 and 31% after 7 and 5 years ... Mostrar Tudo |
Palavras-Chave: |
Amazônia Ocidental; Castanha do brasil; Cerejeira; Ciencias forestales; Desempeño del crecimiento; Embrapa Acre; Exploração florestal mecanizada; Mecanización; Producción de madera; Regeneración artificial; Rio Branco (AC); Sobrevivência de espécies; Torresia acreana. |
Thesagro: |
Bertholletia excelsa; Castanha do pará; Cedrela fissilis; Cedro; Ceiba pentandra; Essência florestal; Exploração florestal; Fator de crescimento; Mogno; Paineira; Regeneração artificial; Silvicultura; Swietenia macrophylla. |
Thesaurus NAL: |
Artificial regeneration; Forestry; Growth performance; Mechanization; Timber production. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
Marc: |
LEADER 03190naa a2200517 a 4500 001 1506702 005 2021-07-28 008 2000 bl uuuu u00u1 u #d 022 $a0378-1127 (impresso) 024 7 $a10.1016/S0378-1127(99)00117-6.$2DOI 100 1 $aOLIVEIRA, M. V. N. d'. 245 $aArtificial regeneration in gaps and skidding trails after mechanised forest exploitation in Acre, Brazil.$h[electronic resource] 260 $c2000 520 $aThe natural regeneration of some desirable species under exploitation pressure in Amazon is often very poor or non-existent. The traditional techniques of enrichment planting have presented low performance of the planted seedlings and high costs for its implementation. This study analyzes the first 5 years of growth and survival of five tropical tree species (Bertholletia excelsa, Ceiba pentandra, Torresia acreana, Swietenia macrophylla and Cedrela fissilis) planted in skidding trails and exploitation gaps. The basic planting technique consisted in using the cleared areas after forest harvesting for the establishment of seedlings of species ecologically adapted to the gap environment. The study was carried out in the EMBRAPA-CPAF-ACRE (Agroforestry Research Centre of Acre) in Acre State in West Amazon. The diameter increment varied from 0.30 cm year?1 for Bertholletia to 0.52 cm year?1 for Swietenia and Torresia. After 5 years the height growth was similar for all species around 3.0 m. In the first year Bertholletia presented a high mortality, around 80%, caused by severe predation by rodents. Ceiba also presented a high mortality after the second year of planting probably due the canopy closure. The best survival percentage was presented by Torresia, over 90%. The Meliaceae (Swietenia and Cedrela) species had a similar survival, around 70 to 75%. The Hypsipyla grandella attack was more severe in Cedrela than in Swietenia, but in both cases (9.37 and 31% after 7 and 5 years respectively for Swietenia and Cedrela) was still low when compared with other enrichment plantings. 650 $aArtificial regeneration 650 $aForestry 650 $aGrowth performance 650 $aMechanization 650 $aTimber production 650 $aBertholletia excelsa 650 $aCastanha do pará 650 $aCedrela fissilis 650 $aCedro 650 $aCeiba pentandra 650 $aEssência florestal 650 $aExploração florestal 650 $aFator de crescimento 650 $aMogno 650 $aPaineira 650 $aRegeneração artificial 650 $aSilvicultura 650 $aSwietenia macrophylla 653 $aAmazônia Ocidental 653 $aCastanha do brasil 653 $aCerejeira 653 $aCiencias forestales 653 $aDesempeño del crecimiento 653 $aEmbrapa Acre 653 $aExploração florestal mecanizada 653 $aMecanización 653 $aProducción de madera 653 $aRegeneración artificial 653 $aRio Branco (AC) 653 $aSobrevivência de espécies 653 $aTorresia acreana 773 $tForest Ecology and Management, Amsterdam$gv. 127, n. 1/3, p. 67-76, March 2000.
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