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LBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin

Data Set Overview

Data setLBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin
Release date2015-09-15
ProjectLarge Scale Biosphere-Atmosphere
Time Period1995-09-01 to 1996-06-30


This data set provides a map of wetland extent, vegetation type, and dual-season flooding state of the entire lowland Amazon basin. The map was derived from mosaics of Japanese Earth Resources Satellite (JERS-1) Synthetic Aperture Radar (SAR) imagery for the period October-November 1995 and May-July 1996. The images are from the original JERS-1 SAR Global Rain Forest Mapping Project (GRFM) (Rosenqvist et al., 2000). Hess et al. (2003; 2012) mapped and validated wetland extent, vegetative cover, and flooding state for an 18 degree X 8 degree portion of the central Amazon using dual-season GRFM mosaics. This study extends the previous wetlands mapping to report the first validated estimate of wetland extent, cover, and flooding for the lowland Amazon basin. A wetlands mask was created by segmentation of the mosaics and clustering of the resulting polygons; a rules set was then applied to classify wetland areas into five land cover classes and two flooding classes using dual-season backscattering values. The mapped wetland area of 8.4 X 105 km2 is equivalent to 14% of the total basin area (5.83 X 106 km2) and 17% of the lowland basin (5.06 X 106 km2). The mapped flooding extent is representative of average high- and low-flood conditions for latitudes north of 6 degrees S; flooding conditions were less well captured for the southern part of the basin.


Data set reference document


Hess, L.L., J.M. Melack, A.G. Affonso, C.C.F. Barbosa, M. Gastil-Buhl, and E.M.L.M. Novo. 2015. LBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin. ORNL DAAC, Oak Ridge, Tennessee, USA.
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Large Scale Biosphere-Atmosphere : The Large-Scale Biosphere-Atmosphere Experiment in Amazonia (LBA) is an intensive scientific investigation of the tropical rainforest of Brazil and portions of adjacent countries. Like FIFE and BOREAS, this project uses intensive remote-sensing techniques and ground-based experiments to investigate the atmosphere-biosphere-hydrosphere dynamics of this large tropical region. The LBA Project encompasses several scientific disciplines, or components. The LBA-ECO component focuses on the question: "How do tropical forest conversion, regrowth, and selective logging influence carbon storage, nutrient dynamics, trace gas fluxes, and the prospect for sustainable land use in Amazonia?"

Project data set list for Large Scale Biosphere-Atmosphere .

Companion Files

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  • LC07_Amazon_Wetlands_High_Water_Stage.png
  • LC07_Amazon_Wetlands.pdf

Data Files

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Data File (Granule)File SizeDates
LBA_Amazon_wetland_dual-season_veg_flood_3arcsec.tif 59.1 MB 1995-09-01 - 1996-06-30
LBA_Amazon_wetland_dual-season_veg_flood_AA100m.tif 51.1 MB 1995-09-01 - 1996-06-30

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Version History

VersionData Set TitlePublished
V1LBA-ECO LC-07 JERS-1 SAR Wetlands Masks and Land Cover, Amazon Basin: 1995-1996 2012-04-12
V2LBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin 2015-09-15


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