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A Comparison between Supervised Classification Methods: Study Case on Land Cover Change Detection Caused by a Hydroelectric Complex Installation in the Brazilian Amazon

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  • Alynne Almeida Affonso

    (Institute of Energy and Environment, University of São Paulo, São Paulo 05508-010, SP, Brazil)

  • Silvia Sayuri Mandai

    (Institute of Energy and Environment, University of São Paulo, São Paulo 05508-010, SP, Brazil)

  • Tatiana Pineda Portella

    (Institute of Biosciences, University of São Paulo, São Paulo 05502-090, SP, Brazil)

  • José Alberto Quintanilha

    (Institute of Energy and Environment, University of São Paulo, São Paulo 05508-010, SP, Brazil)

  • Luis Américo Conti

    (School of Arts, Sciences and Humanities, University of São Paulo, São Paulo 03828-000, SP, Brazil)

  • Carlos Henrique Grohmann

    (Institute of Energy and Environment, University of São Paulo, São Paulo 05508-010, SP, Brazil)

Abstract

The Volta Grande do Xingu (VGX) in the Amazon Forest of Brazil was chosen to analyze the land use and land cover changes (LULCC) from 2000 to 2017, with the aim of assessing the most suitable classification method for the area. Three parametric (Mahalanobis distance, maximum likelihood and minimum distance) and three non-parametric (neural net, random forest and support vector machine) classification algorithms were tested in two Landsat scenes. The accuracy assessment was evaluated through a confusion matrix. Change detection of the landscape was analyzed through the post-classification comparison method. While maximum likelihood was more capable of highlighting errors in individual classes, support vector machine was slightly superior when compared with the other non-parametric options, these being the most suitable classifiers within the scope of this study. The main changes detected in the landscape were from forest to agro-pasture, from forest/agro-pasture to river, and from river to non-river, resulting in rock exposure. The methodology outlined in this research highlights the usefulness of remote sensing tools in follow-up observations of LULCC in the study area (with the possibility of application to the entire Amazon rainforest). Thus, it is possible to carry out adaptive management that aims to minimize unforeseen or underestimated impacts in previous stages of environmental licensing.

Suggested Citation

  • Alynne Almeida Affonso & Silvia Sayuri Mandai & Tatiana Pineda Portella & José Alberto Quintanilha & Luis Américo Conti & Carlos Henrique Grohmann, 2023. "A Comparison between Supervised Classification Methods: Study Case on Land Cover Change Detection Caused by a Hydroelectric Complex Installation in the Brazilian Amazon," Sustainability, MDPI, vol. 15(2), pages 1-28, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:2:p:1309-:d:1030998
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    References listed on IDEAS

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    1. Calvi, Miquéias Freitas & Moran, Emilio F. & Silva, Ramon Felipe Bicudo da & Batistella, Mateus, 2020. "The construction of the Belo Monte dam in the Brazilian Amazon and its consequences on regional rural labor," Land Use Policy, Elsevier, vol. 90(C).
    2. Athayde, Simone & Duarte, Carla G. & Gallardo, Amarilis L.C.F. & Moretto, Evandro M. & Sangoi, Luisa A. & Dibo, Ana Paula A. & Siqueira-Gay, Juliana & Sánchez, Luis E., 2019. "Improving policies and instruments to address cumulative impacts of small hydropower in the Amazon," Energy Policy, Elsevier, vol. 132(C), pages 265-271.
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