Data/hora: 25/06/2024 06:07:16

Biblioteca(s): | Embrapa Amazônia Ocidental.
Data corrente: | 08/01/1997
Data da última atualização: | 18/02/2020
Autoria: | MCWILLIAM, A. L. C.; ROBERTS, J. M.; CABRAL, O. M. R.; LEITAO, M. V. B. R.; COSTA, A. C. L. de; MAITELLI, G. T.; ZAMPARONI, C. A. G. P.
Afiliação: | Institute of Hydrology; EMBRAPA-CPAA; INPE; UFMG.; OSVALDO MACHADO RODRIGUES CABRAL, CPAA.
Título: | Leaf area index and above-ground biomass of terra firme rain forest and adjacent clearings in Amazonia.
Ano de publicação: | 1993
Fonte/Imprenta: | Functional Ecology, v. 7, n. 3, p. 310-317, 1993.
Idioma: | Inglês
Conteúdo: | Leaf area index (L*) and above-ground biomass were determined by destructive sampling for a 400m2 area of terra firme Amazonian rain forest and for an adjacent clearing. While L* in the forest varied considerably with height though the canopy for four separately sampled 100m2 subplots, the cumulative L* was similar with a mean value of 5.7 + ou - 0.5. The total above-ground dry biomass of the forest was 265 + ou - 95t ha-1, while the leaf dry biomass was 6.3 + ou - 0.5t ha-1. The specific leaf area (SLA, cm2g-1) was determined, and found to vary linearlywith canopy depth rising from 65cm2g-1 at the canopy top, to 114cm2g-1at 5m above the forest floor. The average for the four subplots was 90cm2g-1. The leaf area index of grass in the clearing (blade only) averaged 0.8 + ou - 0.4, and total green area index (blade + stem) averaged 1.2 + ou - 0.6. Total above-ground dry biomass (blade, stem) was 2.3 + ou - 0.6t ha-1, while including dead plant material gave a total dry biomass of 5.6 + ou - 2.1t ha-1. Specific leaf area of the grass was 79cm2g-1. The results clearly demonstrate the profound change in leaf area and biomass which accompany Amazonian deforestation.
Palavras-Chave: | Brasil; Dry matter; Tropical rain forest.
Thesagro: | Área Foliar; Biomassa; Desmatamento; Floresta Tropical Úmida; Folha; Matéria Seca.
Thesaurus Nal: | Amazonia; biomass; deforestation; leaf area; leaves.
Categoria do assunto: | --
Registro original: | Embrapa Amazônia Ocidental (CPAA)
Exemplares: | CPAA - (3394-1) - UPC - AP - PP - S7907 -  - S7907 - DIS