30 October 2014 Delimitation and analysis of environmental protection areas in the Paraíba do Sul River Basin in Brazil
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Abstract
This work establishes a semi-automatic methodology to define and evaluate the Environmental Protection Areas (EPA), in the Paraíba River Basin, Brazil, taking account the land use and the water quality. The development of this work started from the water capitation point of Guaratingueta city located on the stream that runs through the city. From ASTER GDEM data the drainage network and the basin catchment was automatically extracted. Landsat images for the dates of 1989, 2001 and 2014 were digitally classified and the land uses were mapped, considering the area of permanent protection (APP) for drainage, respecting the limits indicated by Brazilian forest code. Scenes from the RapidEye satellite were used to answer questions of classification, due to good image definition. The study showed that in 1989, the total area classified as APP, 37.59% were anthropized, reaching 37.98% in 2001 and 36.98% in 2014. In a few years it was possible to associate data from water quality, measured directly at the capitation. In 2001 the water quality data showed that the intensive use of fertilizers drained into the Guaratingueta stream by rice paddies was seriously affecting the water supply of the municipality. In 2008 measures for water quality at the capitation point showed that the water resources were still impacted by agricultural activities from the rice fields. So, this work indicates the need for revitalization of the APP inside the EPA Guaratingueta in order to meet the law, protect watersheds and also avoid large investments in water treatment arriving for public consumption.
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Jussara de Oliveira Ortiz, Jussara de Oliveira Ortiz, Sergio Rosim, Sergio Rosim, Manoel Jimenez Ortiz, Manoel Jimenez Ortiz, João Ricardo de Freitas Oliveira, João Ricardo de Freitas Oliveira, Rodolfo Morais, Rodolfo Morais, Fernando Regis Siqueira, Fernando Regis Siqueira, } "Delimitation and analysis of environmental protection areas in the Paraíba do Sul River Basin in Brazil", Proc. SPIE 9245, Earth Resources and Environmental Remote Sensing/GIS Applications V, 92450S (30 October 2014); doi: 10.1117/12.2067409; https://doi.org/10.1117/12.2067409
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