Data/hora: 12/06/2024 05:53:44

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 26/06/2013
Data da última atualização: | 07/11/2022
Autoria: | MALHI, Y.; WOOD, D.; BAKER, T. R.; WRIGHT, J.; PHILLIPS, O. L.; COCHRANE, T.; MEIR, P.; CHAVE, J.; ALMEIDA, S.; ARROYO, L.; HIGUCHI, N.; KILLEEN, T. J.; LAURANCE, S. G.; LEWIS, S. L.; MONTEAGUDO, A.; NEILL, D. A.; VARGAS, P. N.; PITMAN, N. C. A.; QUESADA, C. A.; SALOMÃO, R.; SILVA, J. N. M.; LEZAMA, A. T.; TERBORGH, J.; MARTÍNEZ, R. V.; VINCETI, B.
Afiliação: | YADVINDER MALHI, Oxford University Centre for the Environment/ University of Edinburgh; DANIEL WOOD, University of Edinburgh; TIMOTHY R. BAKER, University of Leeds; JAMES WRIGHT, University of Southampton; OLIVER L. PHILLIPS, University of Leeds; THOMAS COCHRANE, Agteca; PATRICK MEIR, University of Edinburgh; JEROME CHAVE, Laboratoire Evolution et Diversité Biologique, CNRS/UPS; SAMUEL ALMEIDA, MPEG; LUZMILLA ARROYO, Museo Noel Kempff Mercado; NIRO HIGUCHI, INPA; TIMOTHY J. KILLEEN, Center for Applied Biodiversity Science, Conservation International; SUSAN G. LAURANCE, Smithsonian Tropical Research Institute; SIMON L. LEWIS, University of Leeds; ABEL MONTEAGUDO, Universidad Nacional San Antonio Abad del Cusco / Jardin Botanico de Missouri; DAVID A. NEILL, Fundacion Jatun Sacha; PERCY NÚÑEZ VARGAS, Universidad Nacional San Antonio Abad del Cusco; NIGEL C. A. PITMAN, Duke University; CARLOS ALBERTO QUESADA, University of Leeds; RAFAEL SALOMÃO, MPEG; JOSÉ NATALINO MACEDO SILVA, CIFOR / CPATU; ARMANDO TORRES LEZAMA, INDEFOR; JOHN TERBORGH, Duke University; RODOLFO VÁSQUEZ MARTÍNEZ, Jardin Botanico de Missouri; BARBARA VINCETI, International Plant Genetic Resources Institute.
Título: | The regional variation of aboveground live biomass in old-growth Amazonian forests.
Ano de publicação: | 2006
Fonte/Imprenta: | Global Change Biology, v. 12, n. 7, p. 1107-1138, July 2006.
DOI: | 10.1111/j.1365-2486.2006.01120.x
Idioma: | Inglês
Conteúdo: | The biomass of tropical forests plays an important role in the global carbon cycle, both as a dynamic reservoir of carbon, and as a source of carbon dioxide to the atmosphere in areas undergoing deforestation. However, the absolute magnitude and environmental determinants of tropical forest biomass are still poorly understood. Here, we present a new synthesis and interpolation of the basal area and aboveground live biomass of old-growth lowland tropical forests across South America, based on data from 227 forest plots, many previously unpublished. Forest biomass was analyzed in terms of two uncorrelated factors: basal area and mean wood density. Basal area is strongly affected by local landscape factors, but is relatively invariant at regional scale in moist tropical forests, and declines significantly at the dry periphery of the forest zone. Mean wood density is inversely correlated with forest dynamics, being lower in the dynamic forests of western Amazonia and high in the slow-growing forests of eastern Amazonia. The combination of these two factors results in biomass being highest in the moderately seasonal, slow growing forests of central Amazonia and the Guyanas (up to 350 Mg dry weight ha&#8722;1) and declining to 200?250 Mg dry weight ha&#8722;1 at the western, southern and eastern margins. Overall, we estimate the total aboveground live biomass of intact Amazonian rainforests (area 5.76 × 106 km2 in 2000) to be 93±23 Pg C, taking into account lianas and small trees. Including dead biomass and belowground biomass would increase this value by approximately 10% and 21%, respectively, but the spatial variation of these additional terms still needs to be quantified.
Thesagro: | Biomassa; Carbono; Fertilidade do Solo.
Thesaurus Nal: | Amazonia.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (47800-1) - UPC - AP - DD -  -  -  - DIS