DESMATAMENTO NO BIOMA PANTANAL ATÉ O ANO 2002: RELAÇÕES COM A FITOFISIONOMIA E LIMITES MUNICIPAIS

Abstract

The objective of this work was to map and quantify the deforested area in the Brazilian Pantanal Biome until the year of 2002 and related to the main physiognomies and counties limits. The Pantanal Biome is located in Central-West Brazil, at the Upper Paraguay river basin (BAP) which is part of the La Plata basin. It is covered by 16 Landsat-ETM+ satellite images and 20 topographic maps at the 1:250,000 scale. Initially a mosaic of the area was elaborated at a color composition of bands 3(B) 4(G) 5(R) using ENVI-4.0 software. Afterwards the segmentation was applied to the data sets using the SRING software. Then, the Biome Pananal area was separated in 20 small projects according to the topographic maps at 1:250,000 scale from IBGE. The information on deforested areas and editing procedure of the polygons was done visually on the screen using SPRING 4.0 Software. The Physiognomic-Ecological System was used for the classification of the vegetation including new information when it was necessary. In the deforested interpretation process was considered the texture, color, standard, form and localization (geographic location) and information colleted during the field survey. The deforestation maps were generated in the UTM (Universal Transverse Mercator) projection and Datum SAD69 (South America Datum) with Cartographic Exactness Standard (PEC) compatible to 1:250,000. The minimum mapped area was around 40ha..

Keywords

• Physiognomic-Ecological System
• segmentation
• remote sensing
• GIS.