Landscape heterogeneity of riverine wetlands of the amazon basin from a remote sensing perspective
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Landscape Heterogeneity of Riverine Wetlands of the Amazon Basin from a Remote Sensing Perspective. UCSB – INPE - UW Leal A.K. Mertes Evlyn Novo Yosio Shimabukuro Thelma Krug Jeffrey Richey Funding - NASA & W. Alton Jones Foundation. OUTLINE.

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Landscape Heterogeneity of Riverine Wetlands of the Amazon Basin from a Remote Sensing Perspective

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Landscape heterogeneity of riverine wetlands of the amazon basin from a remote sensing perspective

Landscape Heterogeneity of Riverine Wetlands of the Amazon Basin from a Remote Sensing Perspective

UCSB – INPE - UW

Leal A.K. Mertes

Evlyn Novo

Yosio Shimabukuro

Thelma Krug

Jeffrey Richey

Funding - NASA & W. Alton Jones Foundation


Outline

OUTLINE

  • Relationships among floodplain morphology, vegetation distribution, and inundation hydrology.

  • Floodplain morphology and inundation hydrology 1. along mainstem Amazon River 2. across Amazon Basin.

  • Classification procedure for optical data.

  • Trends in spatial patterns of Amazon Basin wetlands


Inundation hydrology

Inundation Hydrology


Amazon basin river network digital chart of the world

Amazon Basin River Network - Digital Chart of the World


Amazon basin hydrology based on unpublished data provided by dunne newton

Amazon Basin Hydrology(based on unpublished data provided by Dunne & Newton)

Averages based on data for 1972-1996

Average total rainfall - mm Coefficient of variation (by month)


Vegetation zonation on amazon river wetlands

Vegetation Zonation on Amazon River Wetlands

low water

(After Junk 1970)


Methodology for optical data

Methodology for Optical Data


Classification of sma data

macrophyte

Classification of SMA Data

clear water

shade/clear

turbid

vegetation

forest

t

turbid water

v

sh

classified

senesced/bare

color composite


Amazon mainstem floodplain landsat mosaic

Amazon Mainstem Floodplain - Landsat Mosaic


Classified mainstem mosaic

Classified Mainstem Mosaic


Landscape heterogeneity of riverine wetlands of the amazon basin from a remote sensing perspective

c

a

b

FOREST I (LO DENSITY)

FOREST II (HI DENSITY)

MACROPHYTE I/ PASTURE (HI DENSITY)

MACROPHYTE II/PASTURE (LO DENSITY)

TURBID WATER

CLEAR WATER

CLEARWATER W/LOW VEGETATION

SENESCED OR DEFOLIATED VEGETATION

UNCLASSIFIED

MUDDY PASTURE/MACROPHYTE

BOTTOM REFLECTANCE

SAND BARS

URBAN/BARE PASTURE

b

a

c


Vegetation zonation on amazon river wetlands1

Vegetation Zonation on Amazon River Wetlands

low water

(After Junk 1970)


Amazon mainstem floodplain areal km 2 percent cover

Amazon Mainstem Floodplain - Areal (km2) & Percent Cover

  • 30567 lo trees 8776 hi trees11610 lo macro 3328 hi macro 7595 clear17951 turbid 1010 lo veg 2708 dry veg 6383 pasture 173 sand bar

  • 90,275 all

  • 64,383 just veg25,546 just water


Summary for mainstem

4

1

3

2

Summary for Mainstem

  • Landform and vegetation heterogeneity is most diverse in Zones 2 & 3 where there is significant mixing of river water and floodplain water during high water. Floodplain landforms available for colonization by vegetation include scroll bars, swales, lake shores, lake deltas, and floodplain drainage channels.

  • Zones 1 & 4 have less heterogeneous vegetation cover. However, where landforms are similar to the middle reaches, the spatial distribution of vegetation is similar.

  • Decreased forest cover downstream result of marked seasonality of precipitation and longer history of forest cutting.


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