Data/hora: 13/06/2024 16:45:47

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