Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective

Mertes, Leal A.K.; Daniel, Darin L.; Melack, John M.; Nelson, Bruce Walker; Martinelli, Luiz Antônio; Forsberg, Bruce Rider

Artigo

Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective

The spatial heterogeneity of hydrology and vegetation during high-water periods in geomorphically distinct reaches of the Amazon River in Brazil was determined based on semivariance statistics. The spatial statistics were derived from three classified Landsat Thematic Mapper images representing upst...

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Autor principal:	Mertes, Leal A.K.
Outros Autores:	Daniel, Darin L., Melack, John M., Nelson, Bruce Walker, Martinelli, Luiz Antônio, Forsberg, Bruce Rider
Grau:	Artigo
Idioma:	English
Publicado em:	Geomorphology 2020
Assuntos:	Floodplain Geomorphology Hydrology Landsat Tm Remote Sensing Spatial Analysis Vegetation Brazil, Amazon River
Acesso em linha:	https://repositorio.inpa.gov.br/handle/1/19451

id	oai:repositorio:1-19451
recordtype	dspace
spelling	oai:repositorio:1-19451 Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective Mertes, Leal A.K. Daniel, Darin L. Melack, John M. Nelson, Bruce Walker Martinelli, Luiz Antônio Forsberg, Bruce Rider Floodplain Geomorphology Hydrology Landsat Tm Remote Sensing Spatial Analysis Vegetation Brazil, Amazon River The spatial heterogeneity of hydrology and vegetation during high-water periods in geomorphically distinct reaches of the Amazon River in Brazil was determined based on semivariance statistics. The spatial statistics were derived from three classified Landsat Thematic Mapper images representing upstream to downstream geomorphic characteristics. In the upstream river reach, scroll-bar topography on the floodplain tends to channelize floodwater into floodplain drainage channels, thus reducing the diversity of water types by reducing opportunities for mixing of flooding river water with locally derived floodplain water. The highest diversity of vegetation types is along floodplain drainage channels, while the rest of the floodplain has a more homogeneous cover. In the middle reach of the river the diversity of wetland classes as measured by semivariance is higher than both upstream and downstream, perhaps because of exposure to more water types and landforms. The diversity of water types is high, because flooding river water flows onto the floodplain as diffuse, non-channelized overbank flow, as well as through drainage channels. The non-channelized overbank flow readily mixes with locally derived floodplain water. Floodplain landforms available for colonization by vegetation include scroll bars, swales, lake shores, lake deltas, and floodplain drainage channels. In the downstream reach where the floodplain is wide, relatively flat, and covered with huge lakes, the floodplain supports a moderately heterogeneous mix of vegetation communities. Where landforms are similar, the spatial distribution of the vegetation is similar to that of the middle reach of the river. In the downstream reach flooded forest comprised only 37% of the wetland vegetation. In contrast, in both the upstream and middle reaches, over 70% of the wetland vegetation was flooded forest. Agricultural clearing of the floodplain is more. common in downstream reaches and may account for the smaller percent of floodplain forest cover. © 1995. 2020-06-15T22:08:46Z 2020-06-15T22:08:46Z 1995 Artigo https://repositorio.inpa.gov.br/handle/1/19451 10.1016/0169-555X(95)00038-7 en Volume 13, Número 1-4, Pags. 215-232 Restrito Geomorphology
institution	Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection	INPA-RI
language	English
topic	Floodplain Geomorphology Hydrology Landsat Tm Remote Sensing Spatial Analysis Vegetation Brazil, Amazon River
spellingShingle	Floodplain Geomorphology Hydrology Landsat Tm Remote Sensing Spatial Analysis Vegetation Brazil, Amazon River Mertes, Leal A.K. Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective
topic_facet	Floodplain Geomorphology Hydrology Landsat Tm Remote Sensing Spatial Analysis Vegetation Brazil, Amazon River
description	The spatial heterogeneity of hydrology and vegetation during high-water periods in geomorphically distinct reaches of the Amazon River in Brazil was determined based on semivariance statistics. The spatial statistics were derived from three classified Landsat Thematic Mapper images representing upstream to downstream geomorphic characteristics. In the upstream river reach, scroll-bar topography on the floodplain tends to channelize floodwater into floodplain drainage channels, thus reducing the diversity of water types by reducing opportunities for mixing of flooding river water with locally derived floodplain water. The highest diversity of vegetation types is along floodplain drainage channels, while the rest of the floodplain has a more homogeneous cover. In the middle reach of the river the diversity of wetland classes as measured by semivariance is higher than both upstream and downstream, perhaps because of exposure to more water types and landforms. The diversity of water types is high, because flooding river water flows onto the floodplain as diffuse, non-channelized overbank flow, as well as through drainage channels. The non-channelized overbank flow readily mixes with locally derived floodplain water. Floodplain landforms available for colonization by vegetation include scroll bars, swales, lake shores, lake deltas, and floodplain drainage channels. In the downstream reach where the floodplain is wide, relatively flat, and covered with huge lakes, the floodplain supports a moderately heterogeneous mix of vegetation communities. Where landforms are similar, the spatial distribution of the vegetation is similar to that of the middle reach of the river. In the downstream reach flooded forest comprised only 37% of the wetland vegetation. In contrast, in both the upstream and middle reaches, over 70% of the wetland vegetation was flooded forest. Agricultural clearing of the floodplain is more. common in downstream reaches and may account for the smaller percent of floodplain forest cover. © 1995.
format	Artigo
author	Mertes, Leal A.K.
author2	Daniel, Darin L. Melack, John M. Nelson, Bruce Walker Martinelli, Luiz Antônio Forsberg, Bruce Rider
author2Str	Daniel, Darin L. Melack, John M. Nelson, Bruce Walker Martinelli, Luiz Antônio Forsberg, Bruce Rider
title	Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective
title_short	Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective
title_full	Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective
title_fullStr	Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective
title_full_unstemmed	Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective
title_sort	spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the amazon river in brazil from a remote sensing perspective
publisher	Geomorphology
publishDate	2020
url	https://repositorio.inpa.gov.br/handle/1/19451
_version_	1787144734667440128
score	11.755432

Spatial patterns of hydrology, geomorphology, and vegetation on the floodplain of the Amazon river in Brazil from a remote sensing perspective

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