Data/hora: 06/06/2024 08:18:17

Biblioteca(s): 	Embrapa Amazônia Oriental.	
Tipo da produção científica: 	Artigo em Periódico Indexado	
Circulação/Nível: 	Internacional - A	
Data corrente: 	03/05/2013	
Data da última atualização: 	08/06/2022	
Autoria: 	LEFSKY, M. A.; HARDING, D. J.; KELLER, M.; COHEN, W. B.; CARABAJAL, C. C.; ESPIRITO-SANTO, F. D. B.; HUNTER, M. O.; OLIVEIRA JUNIOR, R. de.	
Afiliação: 	MICHAEL A. LEFSKY, COLORADO STATE UNIVESITY; DAVID J. HARDING, NASA; MICHAEL KELLER, USDA / UNIVERSITY OF NEW HAMPSHIRE; WARREN B. COHEN, USDA; CLAUDIA C. CARABAJAL, NASA; FERNANDO DEL BOM ESPIRITO-SANTO, INPE; MARIA O. HUNTER, UNIVERSITY OF NEW HAMPSHIRE; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU.	
Título: 	Estimates of forest canopy height and aboveground biomass using ICESat.	
Ano de publicação: 	2005	
Fonte/Imprenta: 	Geophysical Research Letters, v. 32, n. 22, L22S02, Nov. 2005.	
DOI: 	10.1029/2005GL023971	
Idioma: 	Inglês	
Conteúdo: 	Exchange of carbon between forests and the atmosphere is a vital component of the global carbon cycle. Satellite laser altimetry has a unique capability for estimating forest canopy height, which has a direct and increasingly well understood relationship to aboveground carbon storage. While the Geoscience Laser Altimeter System (GLAS) onboard the Ice, Cloud and land Elevation Satellite (ICESat) has collected an unparalleled dataset of lidar waveforms over terrestrial targets, processing of ICESat data to estimate forest height is complicated by the pulse broadening associated with large-footprint, waveform-sampling lidar. We combined ICESat waveforms and ancillary topography from the Shuttle Radar Topography Mission to estimate maximum forest height in three ecosystems; tropical broadleaf forests in Brazil, temperate broadleaf forests in Tennessee, and temperate needleleaf forests in Oregon. Final models for each site explained between 59% and 68% of variance in field-measured forest canopy height (RMSE between 4.85 and 12.66 m). In addition, ICESat-derived heights for the Brazilian plots were correlated with field-estimates of aboveground biomass (r2 = 73%, RMSE = 58.3 Mgha?1).	
Thesagro: 	Biomassa; Floresta; Solo.	
Categoria do assunto: 	K Ciência Florestal e Produtos de Origem Vegetal	
Registro original: 	Embrapa Amazônia Oriental (CPATU)	
Exemplares: 	CPATU - (47357-1) - UPC - AP - DD -  -  -  - DIS