Sensoriamento remoto como analise da expansao urbana e a relacao com areas de preservacao permanente na sede do municipio de Castanhal-PA
نویسندگان
چکیده
The purpose of this study is to identify the possible environmental implications caused by the irregular expansion of the urban spot in Permanent Preservation Areas of the Apeú, Castanhal and Igarapé do Defunto streams. In this study, a 30-year time scale was considered, from 1987 to 2017. Satellite and radar images made available by INPE and USGS were used for the elaboration NDVI indices. In the delimitation of the APPs, the extraction of the drainage network obtained from the SRTM image was used according to hydrological modeling. Resumo. O propósito deste estudo é identificar possíveis implicações ambientais ocasionadas pela expansão irregular da mancha urbana em Áreas de Preservação Permanente dos igarapés Apeú, Castanhal e Igarapé do Defunto. Neste estudo, foi considerada uma escala temporal de 30 anos, no período de 1987 a 2017. Foram utilizadas imagens de satélite e de radar disponibilizadas pelo INPE e USGS para a elaboração de índices NDVI. Na delimitação das APPs utilizou se a extração da rede de drenagem obtidas da imagem SRTM, segundo modelagem hidrológica. Proceedings XVIII GEOINFO, December 04th to 06nd, 2017, Salvador, BA, Brazil. p 98-103.
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