International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004
Figure 4: Aerial view or Cachoeira Natural Reserve. In the
detail is shown buffalos and coal furnaces.
2.2 Planning and Development
2.2.1 Definition of the baseline in the embracement area —
EPA of Guaraqueçaba
In order to evaluate a demonstration of the dynamics of the
area under study, with and without the existence of the SPVS
project, information were collected. Two methods were
employed which enabled a comparison and a
complementation of the information. The area under study
was limited within the EPA of Guaraquecaba (314,000
hectares). The results of these analysis generate data about
the carbon amount to be captured by the project alongside its
duration. The two evaluations done are the multitemporal
study from the orbital images and another, also based on
orbital images, but with additional details that made possible
the Shape (Modelling).
2.2.1.1 Multitemporal Study of the land use from the
orbital images: Land Use Mapping for the years 1986, 1994
and 1999, based on the Landsat 5 TM sattelite images, bands
543, RGB colour composition and 30m spatial resolution.
The method used was the supervised digital classification
with field gauging of the points considered as critical and
originated by samples. The results were cross-referenced and
the result was a map with the changing in areas for the
period. The hydrographic and road data were also cross-
referenced and as a consequence it was noted that the
changes occurred mainly alongside the roads and accesses.
d 4
Figure 5: Map of Land
Use by 1999 (Part of
the Multitemporal
Study)
808
2.2.12 Shaping — Geomod ': A land use study for the
years 1975, 1986 and 2002 was done by supervised digital
interpretation, but in a different way of the multitemporal
study already mentioned. Such a mapping has as outcome the
vegetation and non-vegetation classes for the shaded and
non-shaded areas of the satellite images. The imagens had a
30m resolution, RGB coloured composition of the bands 4, 3
and 2 from the Landsat TM (1075) satellite and bands 5, 4
and 3 from the Landsat 5 TM (1986) and Landsat ETM 7
satellites (2002).
From the understanding of land use covering changes
dynamics it is possible to build mathematic models for
scenario generation with a good reliability in the land
covering status in simulations for past and future. For the
model build-up there were considered variables that
maximize or minimize the human-related activities in the
environment. These variables were the distances from
hydrographic ways, from paved and non-paved roads, sea
border, deforestation and from communities, slopes,
hipsometry, water sources orientation, soils and hidrografic
basins.
For the shape execution it was used the GEOMOD program,
an IDRISI module. The program analyses the vegetation data
in reference to the two dates and calculates the changes in a
linear form. In addition it simulates the vegetation status in
the past and in the future based on the use of the interference
variable in the deforestation or reforestation.
The characteristics of each region are also considered inside
the area under study, as they can influence the analysis in a
differentiated maner.
2.2.2 Area compartmentation in terms of physical
environment — geoambiental map as a subsidy to the projects
planning
The zones with similar characteristics were delimited from
overlapping of the issues in a GIS ambient (secondary data).
The data relating to Soils, Geology, Relief, Climate,
Hydrography and Hydrogeology were intersected and, by the
use of the characterization rules, the Homogeneous
Geoambiental Units were achieved.
2.2.3 Projects influence areas
The projects influence areas were defined from the following
characteristics:
DAA - direct affected area (ADA — área diretamente afetada)
— an area restricted to physical-territorial sites of farms
already effectively acquired or even those in the prospection
phase. Over these areas the actions for degraded areas
recovering due to the forest suppression must be
concentrated.
* Some of the work and results presented in this article were
generated with the support of the U.S. Department of Energy,
under Award No. DE-FC26-0INT41151. However, any
opinions, findings, conclusions, or recommendations
expressed herein are those of the author(s) and do not
necessarily reflect the views of the DOE.
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