Vinte anos monitorando a dinâmica de crescimento de uma floresta tropical explorada na Amazônia ocidental

Autores

  • Marcus Vinicio Neves d'Oliveira Embrapa Acre
  • Luis Claudio Oliveira Embrapa Acre
  • Mario Humberto Aravena Acuña Universidade Federal do Acre
  • Evaldo Muñoz Braz Embrapa Florestas

DOI:

https://doi.org/10.4336/2017.pfb.37.92.1398

Palavras-chave:

Gestão florestal, Biomassa acima do solo, Parcelas experimentais

Resumo

Foi conduzido um estudo sobre a dinâmica de crescimento em floresta localizada no Estado do Acre na Amazônia sul ocidental, onde uma área de 20 ha foi explorada para extração de madeira em 1992. O estudo foi baseado em parcelas permanentes (1 ha) estabelecidas dentro da área explorada e na floresta não manejada, imediatamente após o fim das operações florestais. Os parâmetros da dinâmica florestal foram analisados em termos da biomassa seca acima do solo (BAS). Durante o período do estudo três eventos climáticos extremos causaram um elevado impacto tanto nas áreas exploradas como nas não perturbadas por exploração, produzindo perdas de biomassa superiores às estimadas para a exploração. Vinte anos após a exploração, as taxas de ingresso e mortalidade foram semelhantes às esperadas em uma área de floresta não perturbada por exploração e a recuperação da BAS foi significativamente mais alta nas áreas cortadas. Quando praticado de forma adequada, o manejo de floresta pode promover uma recuperação da BAS mais rápida. Nós sugerimos que o manejo florestal pode ser considerado como uma alternativa para adaptação a eventos extremos de clima por meio da promoção de perturbações controladas que minimizem a mortalidade de árvores e a perda de biomassa.

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Biografia do Autor

Marcus Vinicio Neves d'Oliveira, Embrapa Acre

http://lattes.cnpq.br/3444339352534149

Mario Humberto Aravena Acuña, Universidade Federal do Acre

http://lattes.cnpq.br/6925658713840240

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29-12-2017

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D’OLIVEIRA, Marcus Vinicio Neves; OLIVEIRA, Luis Claudio; ACUÑA, Mario Humberto Aravena; BRAZ, Evaldo Muñoz. Vinte anos monitorando a dinâmica de crescimento de uma floresta tropical explorada na Amazônia ocidental. Pesquisa Florestal Brasileira, [S. l.], v. 37, n. 92, p. 493–502, 2017. DOI: 10.4336/2017.pfb.37.92.1398. Disponível em: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1398. Acesso em: 5 dez. 2024.

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