Estimates of deforestation rates in the municipality of Itacoatiara, Amazonas, through Landsat-5/TM time series

Authors

  • Bruno Ferezim Morales Universidade Federal do Amazonas http://orcid.org/0000-0003-1116-3051
  • Alan Lopes da Costa Fundação São Vicente de Paulo
  • Rodrigo Bíscaro Nogueira Universidade Federal do Amazonas
  • Christiano Luna Arraes Universidade Federal do Amazonas

DOI:

https://doi.org/10.6008/CBPC2674-6492.2021.001.0002

Keywords:

Vegetal suppression, NDVI, Remote Sensing

Abstract

Continuous estimates of deforestation rates, through remote sensing techniques, increase the monitoring of large areas such as the Amazon. Therefore, the present study aimed to estimate the annual and daily deforestation rates in the municipality of Itacoatiara-AM, using images from the Landsat-5 / TM satellite. At first, Lansat-5 / TM images were recorded and, in sequence, the NDVI values were calculated, which made it possible to generate masks more befitting the events studied. Based on these values, annual and daily deforestation rates were calculated for the municipality between 1997 and 2011. The results indicated oscillations between positive and negative deforestation values for the analyzed time series. Positive deforestation rates were verified for the years 2000, 2005, 2007, 2009 and 2011, with emphasis on the year 2007 with an annual deforestation rate of 1438.8 km2 per year. It is noteworthy that in the years 2009 and 2011, relatively low deforestation rates were estimated when compared to the rates of previous years. It was found that the deforestation rates for the period studied peaked in 2007 and after that they suffered a decrease, this is due to the lack of characterization of the municipality as the main as the main wood pole of the state in the same period. Therefore, it can be inferred that wood logging together with agriculture are the main agents of deforestation in small and medium municipalities in the interior of the legal Amazon.

Author Biography

Bruno Ferezim Morales, Universidade Federal do Amazonas

Graduação em Ciências Biológicas pela Universidade Estadual de Maringá (2007); Mestrado em Biologia de Água Doce e Pesca Interior pelo Instituto Nacional de Pesquisas da Amazônia (2011). Doutorando em Ciências Biológicas (Zoologia) pela Universidade Estadual Paulista "Júlio de Mesquita Filho". Atuação como professor na Universidade Estadual do Amazonas (2011-2012); Professor de graduação na Faculdade Fucapi (2013-2016) e Professor Assistente na Universidade Federal do Amazonas (2016 em diante). Tem experiência na área de Ecologia, com ênfase em Ecologia de Ecossistemas e Comunidades de Peixes Neotropicais. Atuação como professor de graduação em áreas específicas da formação acadêmica e e áreas correlatas, principalmente referentes a Gestão e Manejo Ambiental, Ciências Ambientais, Saneamento Ambiental e Bioprocessos

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Published

2021-08-05

Issue

Vol. 3 No. 1 (2021): Environmental Scientiae: Dez 2020, Jan, Fev, Mar, Abr, Mai 2021

Section

Tecnologia, Modelagem e Geoprocessamento

License

Copyright (c) 2021 Environmental Scientiae

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