Forest in South America (excluding Brazil) is 2,500,000
square quilometers large and even a little greater when all
the measurements shall be completed. This huge system
is covered by 156 nominal LANDSAT full frames.
In order to have a complete coverage of each country in
two periods the Project requested 350 images INPE-
Brazil (270), EOSAT-USA(80) and Cotopaxi-Ecuador
(2). the number of images that were distributed to
Panamazonia countries. Just 28 images from both periods
(7% of the images) were not available due to excessive
cloud coverage (limit of clouds: 40%)
Typical patterns of deforestation widely distributed in
Brazil have not been found in others South American
countries. This is the case of the large farmlands widely
spread in the Brazilian Amazonia. They were not
depicted elsewhere in the Panamazonia counbtries. The
fish ribbon-like pattern of landuse widely distributed also
in Brazil is not found too. Out of Brazil the settlers work
in smaller sites. Growing settlements can be found in
Bolivia (Cochabamba and Santa Cruz de la Sierra), Peru
(Pucalpa and Iquitos), Ecuador (Napo Headwaters),
Colombia (Guaviare and Caqueta Headwaters).
The partial results indicate that the numbers for
deforestation in South America issued elsewhere (e.g.
FAO, Friends of Earth} for Bolivia between the periods
of 1984 to 1991 were 300% overestimated. Other partial
results of Peru, Colombia and Venezuela are indicating
that the numbers for the deforestation in South America
must be reviewed. This revision must to be done taking
in account new technological capabilities as GIS and
orbital all weather Remote Sensing devices.
5. NEW FEATURES
Spectral and temporal attributes of Remote Sensing data
have shown new features mostly within the Brazilian
bounds. These features are indicating an expantion in
ore/oil exploitation and increased actions of gold miners.
Waterscape changes for instance that were detected in
Xingu and Tapajos rivers are due to the digging of gold
bearing alluvia. Coarsed sediments digged and washed
out from the alluvial banks are changing clean and fresh-
water rivers into turbid and muddy streams. Images have
shown that typical digging signatures are drifting from
the exhausted gold gravels of Carajas-Serra Pelada to the
North of Mato Grosso State and to the South of Para
State.
Environmental damages otherwise are not the case for the
large and well planned projects of ore exploitation such
are Pitinga (Tin), Trometas (bauxite) and Carajas (Fe,
Mn, Ni, Au). These projects have grown without
significant damages except for those due to the
exploration fo the sorrounding overburden. Shortwaye
infrared images of those sites have shown no impacts in
the waterscapes that sorround the open pitch mines
Brazilian Oil Company has recently measured giga cubic
meters of gas in the headwaters of Tefe River in the State
of Amazonas and potential oil trappings have also been
mapped. Geophysical and Geological prospecting have
let some surprising features within the forest and they
were clearly registered in the images as delta wing-like
patterns.
Except for spectral bands, the temporal attributes are the
key elements to monitor the land and the waterscapes of
the Panamazonia countries. To track timely and
effectively the enviromental changes in this region one
must to gain high experience in analysing and integrating
the data collected by current all weather Remote Sensing
satellites . That is de coming purpose of the Panamazonia
scientific team.
6. SELECTED BIBLIOGRAPHY
ENRIC, 1994. A Source Book on Tropical Forest
Mapping Trough Satellite Imagery: the Status of Current
International Efforts. | Environmental and Natural
Resources Information Center (ENRIC). Arlington, VA-
USA
FAO. 1988. An Interim Report on the State of the Forest
Resources in the Developing Countries. Forest Resources
Division. Rome
Girou D.; Lamotte G..1994. Guyane Francaise-Projet
Panamazonia 1993. Ecole Nationale de Genie Rural des
Eaux et des Forets (ENGREF). Centre de Kourou.
Kourou, Departement du Guyane, France.
INPE, 1994. Technical Cooperation and Training within
the Panamazonia Project: a Proposal to UNEP. Brazilian
National Institute of Space Research (INPE). Sao Jose
dos Campos, SP, Brazil
Martini P.R., 1992. Panamazonia Project: an Executive
Report. Sociedad de Especialistas Latinoamericano en
Percepcion Remota SELPER Newsletter 8 (1) pp.8-12.
Martini PR, 1993. Panamazonia Project to Monitor South
America Tropical Forest. In: Memories of VI Latin
America Remote Sensing Symposium. Cartagena de
Indias, Colombia, pp. 25-29.
Melo Wilches H.. 1993. Proyecto de Monitoreo de la
Influencia Humana en la Deforestacion de la Cuenca del
Amazonas. In: Abstracts of. VI Latin America Remote
Sensing Symposium, Cartagena de Indias. Colombia.
p.169.
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International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B7. Vienna 1996