Data Set Overview
|Data set||LBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin|
|Project||Large Scale Biosphere-Atmosphere|
|Time Period||1995-09-01 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.
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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 .
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|Data File (Granule)||File Size||Dates|
|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|
Visualize and Subset Data
|Version||Data Set Title||Published|
|V1||LBA-ECO LC-07 JERS-1 SAR Wetlands Masks and Land Cover, Amazon Basin: 1995-1996||2012-04-12|
|V2||LBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin||2015-09-15|
Files related to this data set have been downloaded on 369 occasions since 2015-09-15, totaling 2496 files.