@Article{HessMeAfBaGaNo:2015:ExVeCo,
author = "Hess, Laura L. and Melack, John M. and Affonso, Adriana Gomes and
Barbosa, Claudio Clemente Faria and Gastil-Buhl, Mary and Novo,
Evlyn M{\'a}rcia Le{\~a}o de Moraes",
affiliation = "{University of California} and {University of California} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {University of
California} and {Instituto Nacional de Pesquisas Espaciais
(INPE)}",
title = "Wetlands of the lowland Amazon basin: extent, vegetative cover,
and dual-season inundated area as mapped with JERS-1 synthetic
aperture radar",
journal = "Wetlands",
year = "2015",
volume = "35",
number = "4",
pages = "745--756",
month = "Aug.",
keywords = "Tropical wetlands, Amazon River, Floodplain inundation, Radar
remote sensing, JERS-1, Global Rain Forest Mapping Project.",
abstract = "Wetland extent, vegetation cover, and inundation state were mapped
for the first time at moderately high (100 m) resolution for the
entire lowland Amazon basin, using mosaics of Japanese Earth
Resources Satellite (JERS-1) imagery acquired during low- and
high-water seasons in 1995-1996. 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 10(5) km(2) is equivalent to 14 % of the total basin area (5.83
x 10(6) km(2)) and 17 % of the lowland basin (5.06 x 10(6) km(2)).
During high-water season, open water surfaces accounted for 9 % of
the wetland area, woody vegetation 77 %, and aquatic macrophytes
14 %. Producer's accuracy as assessed using high-resolution
digital videography was better than 85 % for wetland extent. The
mapped flooding extent is representative of average high- and
low-flood conditions for latitudes north of 6A degrees S; flooding
conditions were less well captured for the southern part of the
basin. Global data sets derived from lower-resolution optical
sensors capture less than 25 % of the wetland area mapped here.",
doi = "10.1007/s13157-015-0666-y",
url = "http://dx.doi.org/10.1007/s13157-015-0666-y",
issn = "0277-5212 and 1943-6246",
language = "en",
targetfile = "hess_wetlands.pdf",
urlaccessdate = "27 abr. 2024"
}