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

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/1284
Version2
Project
Published2015-09-15
Updated2015-09-15
Usage1136 downloads
Citations13 publications cited this dataset

Description

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.

Science Keywords

  • BIOSPHERE
  • ECOSYSTEMS
  • TERRESTRIAL ECOSYSTEMS
  • WETLANDS
  • LAND SURFACE
  • LAND USE/LAND COVER
  • LAND USE/LAND COVER CLASSIFICATION
  • TERRESTRIAL HYDROSPHERE
  • SURFACE WATER
  • SURFACE WATER PROCESSES/MEASUREMENTS
  • INUNDATION

Data Use and Citation

This dataset is openly shared, without restriction, in accordance with the NASA Data and Information Policy.

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Crosscite Citation Formatter
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. https://doi.org/10.3334/ORNLDAAC/1284

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Data Files

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Companion Files

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Dataset has 2 companion files.

  • LC07_Amazon_Wetlands_High_Water_Stage.png
  • LC07_Amazon_Wetlands.pdf

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Version History

VersionDataset TitlePublished
1LBA-ECO LC-07 JERS-1 SAR Wetlands Masks and Land Cover, Amazon Basin: 1995-1996 2012-04-12
2LBA-ECO LC-07 Wetland Extent, Vegetation, and Inundation: Lowland Amazon Basin 2015-09-15