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Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 4
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Canopy area of large trees explains aboveground biomass variations across neotropical forest landscapes. Repositório Alice
MEYER, V.; SAATCHI, S.; CLARCK, D. B.; KELLER, M.; VICENT, G.; FERRAZ, A.; ESPÍRITO-SANTO, F.; OLIVEIRA, M. V. N. d'; KAKI, D.; CHAVE, J..
Large tropical trees store significant amounts of carbon in woody components and their distribution plays an important role in forest carbon stocks and dynamics. Here, we explore the Properties of a new lidar-derived index, the large tree canopy area (LCA) defined as the area occupied by canopy above a reference height. We hypothesize that this simple measure of forest structure representing the crown area of large canopy trees could consistently explain the landscape variations in forest volume and aboveground biomass (AGB) across a range of climate and edaphic conditions. To test this hypothesis, we assembled a unique dataset of high-resolution airborne light detection and ranging (lidar) and ground inventory data in nine undisturbed old-growth...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Floresta neotropical; Neotropical forests; Bosques neotropicales; Teledetección; Inventario forestal; Dossel; Cubierta forestal; Biomassa aérea; Reservorios de carbono; Old-grow lowland; Planícies antigas; Planicies antiguas; Sensoriamento Remoto; Inventário Florestal; Raio Laser; Carbono; Estoque; Remote sensing; Lasers; Lidar; Forest inventory; Forest canopy; Aboveground biomass; Carbon sinks.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1092386
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Seeing the forest beyond the trees. Repositório Alice
SAATCHI, S.; MASCARO, J.; XU, L.; KELLER, M.; YANG, Y.; DUFFY, P.; ESPÍRITO-SANTO, F.; BACCINI, A.; CHAMBERS, J.; SCHIMEL, D..
In a recent paper (Mitchard et al. 2014, Global Ecology and Biogeography, 23, 935?946) a new map of forest biomass based on a geostatistical model of field data for the Amazon (and surrounding forests) was presented and contrasted with two earlier maps based on remotesensing data Saatchi et al. (2011; RS1) and Baccini et al. (2012; RS2). Mitchard et al. concluded that both the earlier remote-sensing based maps were incorrect because they did not conform to Mitchard et al. interpretation of the field-based results. In making their case, however, they misrepresented the fundamental nature of primary field and remote-sensing data and committed critical errors in their assumptions about the accuracy of research plots, the interpolation methodology and the...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Allometry; Biomass; Lidar; Remote sensing; Spatial modelling; Tree height; Tropical forests; Wood density.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1001136
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Size and frequency of natural forest disturbances and the Amazon forest carbon balance. Repositório Alice
ESPÍRITO-SANTO, F. D. B.; GLOOR, M.; KELLER, M.; MALHI, Y.; SAATCHI, S.; NELSON, B.; OLIVEIRA JUNIOR, R. C.; PEREIRA, C.; LLOYD, J.; FROLKING, S.; PALACE, M.; SHIMABUKURO, Y. E.; DUARTE, V.; MONTEAGUDO MENDOZA, A.; LÓPEZ-GONZÁLEZ, G.; BAKER, T. R.; FELDPAUSCH, T. R.; BRIENEN, R. J. W.; ASNER, G. P.; BOYD, D. S.; PHILLIPS, O. L..
Forest inventory studies in the Amazon indicate a large terrestrial carbon sink. However, field plots may fail to represent forest mortality processes at landscape-scales of tropical forests. Here we characterize the frequency distribution of disturbance events in natural forests from 0.01ha to 2,651ha size throughout Amazonia using a novel combination of forest inventory, airborne lidar and satellite remote sensing data. We find that small-scale mortality events are responsible for aboveground biomass losses of ~1.7PgCy;1 over the entire Amazon region. We also find that intermediate-scale disturbances account for losses of ~0.2PgCy1, and that the largest-scale disturbances as a result of blow-downs only account for losses of ~0.004PgCy1. Simulation of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Clima; Ciência da Terra; Floresta; Amazônia; Carbono.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/984523
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The spectrum of natural forest disturbances and the Amazon forest carbon balance. Repositório Alice
ESPÍRITO-SANTO, F. D. B.; GLOOR, M.; KELLER, M.; MALHI, Y.; SAATCHI, S.; NELSON, B.; OLIVEIRA JUNIOR, R.; PEREIRA, C.; LLOYD, J.; FROLKING, S.; PALACE, M.; SHIMABUKURO, Y.; DUARTE, V.; MENDONZA, A.; LOPEZ-GONZALEZ, G.; BAKER, T. R.; FELDPAUSCH, T.; ASNER, G.; BOYD, D.; PHILLIPS, O..
2014
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Carbono; Floresta; Amazônia; Carbon; Florest; Amazon.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1003888
Registros recuperados: 4
Primeira ... 1 ... Última
 

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