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CALIBRATING CERRADO PHYSIOGNOMIES USING SAR AND OPTICAL IMAGES IN BRAZIL.

By Marisa D. Bitencourt and Humberto N. De Mesquita

Abstract

The objective of this study is to evaluate the potential use of L-band SAR images, comparing to optical images, to separate the physiognomic gradient of the Cerrado biome. The field data come from a project from the BIOTA/FAPESP Program which visited several remnants between 1999 and 2002. That project studied 206 Cerrado polygons within the state of São Paulo – Brazil, in order to discriminate their physiognomies and their conservation stages. This study started in one pilot area located in a Conservation Unit (CU) which presents all Cerrado physiognomies. Thus, the vegetation classes within the CU were analyzed using Landsat TM/ETM+ and Terra-MODIS images, and then compared with the JERS-1/SAR images. After the classification of the physiognomies found in the pilot area the same procedure were done for 206 polygons all over the São Paulo state. Thus, the NDV

Year: 2011
OAI identifier: oai:CiteSeerX.psu:10.1.1.184.4478
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