Morphometric characterization of doliniform features in the Araguaia Plain

Detalhes bibliográficos
Autor(a) principal: Manchola, Oscar Eduardo Paez
Data de Publicação: 2023
Outros Autores: Morais, Fernando de
Tipo de documento: Artigo
Idioma: por
eng
Título da fonte: Sociedade & natureza (Online)
Texto Completo: https://seer.ufu.br/index.php/sociedadenatureza/article/view/67351
Resumo: The Araguaia Plain has extensive areas of savannah scattered forest fragments similar to circular depressions. These features, in addition to serving as corridors, could be associated with important features such as karsts, closed-water connection structures and ecological-type formations. To identify this relationship and contribute to the understanding of its genesis, this study has as its main objective the morphometric analysis of doliniform functions in the Araguaia Plain. Through the geoenvironmental characterization of the study area; digital facility models – SRTM; interpretation of Sentinel 2-A satellite images from 2019 to 2020; and calculation of morphometric variables: area, perimeters, activity, altitude, length and density, Kernel circularity index. A total of 24,023 doliniform features associated with green/healthy vegetation were identified in a Coverage Area of 114,900 km², Concentrated Majoritariate in the Brazilian municipalities of Lagoa da Confusão -Tocantins; Pium-Tocantins and Cocalinho-Mato Grosso. The features showed circular superiority areas up to 10 km², circular activity indexes at 0.5 and up to 1 and 1.5, indicating a predominance of circular shapes on slopes of 3% in the NE orientation. Based on the results, it can be verified that these features present sinkholes, as they may be under the influence of patterns associated with some processes, denoting in some processes the existence of a covered karst.
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spelling Morphometric characterization of doliniform features in the Araguaia PlainCaracterização morfométrica de feições doliniformes na Planície do AraguaiaMapeamentoDolinasCarsteFragmentos florestaisMappingSinkholesKarstForest fragmentsThe Araguaia Plain has extensive areas of savannah scattered forest fragments similar to circular depressions. These features, in addition to serving as corridors, could be associated with important features such as karsts, closed-water connection structures and ecological-type formations. To identify this relationship and contribute to the understanding of its genesis, this study has as its main objective the morphometric analysis of doliniform functions in the Araguaia Plain. Through the geoenvironmental characterization of the study area; digital facility models – SRTM; interpretation of Sentinel 2-A satellite images from 2019 to 2020; and calculation of morphometric variables: area, perimeters, activity, altitude, length and density, Kernel circularity index. A total of 24,023 doliniform features associated with green/healthy vegetation were identified in a Coverage Area of 114,900 km², Concentrated Majoritariate in the Brazilian municipalities of Lagoa da Confusão -Tocantins; Pium-Tocantins and Cocalinho-Mato Grosso. The features showed circular superiority areas up to 10 km², circular activity indexes at 0.5 and up to 1 and 1.5, indicating a predominance of circular shapes on slopes of 3% in the NE orientation. Based on the results, it can be verified that these features present sinkholes, as they may be under the influence of patterns associated with some processes, denoting in some processes the existence of a covered karst.La Planicie del Araguaia presenta extensas áreas de sabanas con dispersos fragmentos forestales localizados sobre depresiones circulares. Estas formas además de servir como importantes corredores ecológicos, están asociadas a formaciones cársticas del tipo dolinas, estructuras cerradas de conexión entre las aguas superficiales y subterráneas. Para identificar esta relación y contribuir a la comprensión de su génesis, este estudio tiene como objetivo principal el mapeo y análisis morfométrico de rasgos doliniformes en la Llanura de Araguaia. A través de la caracterización geoambiental del área de estudio; modelos digitales de elevación - SRTM, interpretación de imágenes satelitales Sentinel 2-A de 2019 a 2020; y cálculo de variables morfométricas: área, perímetro, pendiente, altitud, coeficiente de elongación, índice de circularidad y densidad Kernel. Se identificaron un total de 24.023 rasgos doliniformes asociados a vegetación verde/sana en un área de 114.900 km², mayoritariamente concentrados en los municipios de Lagoa da Confusão – TO, Pium – TO y Cocalinho – MT. Los rasgos presentaron áreas de hasta 10 km², índices de circularidad superiores a 0,5 y coeficientes de elongación entre 1 y 1,5, indicando un predominio de formas circulares en pendientes de hasta 3% en la orientación NE. Con base en los resultados, se puede inferir que estos rasgos presentan formas de sumideros, los cuales pueden estar bajo la influencia de controles estructurales y asociados a procesos kársticos, denotando en algunos lugares la existencia de un karst cubierto.  A Planície do Araguaia apresenta extensas áreas de savanas com dispersos fragmentos florestais localizados sobre depressões circulares. Estas feições além de servirem como importantes corredores ecológicos, poderiam estar associadas a formações cársticas do tipo dolinas, estruturas fechadas de conexão das águas superficiais e subterrâneas. Para identificar esta relação e contribuir o entendimento da sua gênese, este estudo tem como objetivo principal o mapeamento e análise morfométrica de feições doliniformes na Planície do Araguaia. Por meio da caracterização geoambiental da área de estudo; modelos de elevação digital – SRTM; interpretação de imagens do satélite Sentinel 2-A do período de 2019 a 2020; e cálculo das variáveis morfométricas: área, perímetro, declividade, altitude, coeficiente de alongamento, índice de circularidade e densidade de Kernel. Foram identificadas 24.023 feições doliniformes associadas à vegetação verde/sadia em área de abrangência de 114.900 km², concentradas majoritariamente nos municípios de Lagoa da Confusão – TO, Pium – TO e Cocalinho – MT. As feições apresentaram áreas de até 10 km², índices de circularidade superiores a 0,5 e coeficientes de alongamento entre 1 e 1,5, indicando uma predominância de formas circulares em declividades de até 3% na orientação NE. Com base nos resultados, pode-se inferir que estas feições apresentam formas de dolinas, as quais podem estar sob influência de controles estruturais e associadas a processos cársticos, denotando em alguns lugares a existência de um carste encoberto.Universidade Federal de Uberlândia2023-03-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.ufu.br/index.php/sociedadenatureza/article/view/6735110.14393/SN-v35-2023-67351Sociedade & Natureza; Vol. 35 No. 1 (2023): Sociedade & Natureza; v. 35 n. 1 (2023): 1982-45130103-1570reponame:Sociedade & natureza (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUporenghttps://seer.ufu.br/index.php/sociedadenatureza/article/view/67351/35881https://seer.ufu.br/index.php/sociedadenatureza/article/view/67351/35882Copyright (c) 2022 Oscar Eduardo Paez Manchola, Fernando Moraishttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessManchola, Oscar Eduardo PaezMorais, Fernando de2023-08-25T14:35:59Zoai:ojs.www.seer.ufu.br:article/67351Revistahttp://www.sociedadenatureza.ig.ufu.br/PUBhttps://seer.ufu.br/index.php/sociedadenatureza/oai||sociedade.natureza.ufu@gmail.com|| lucianamelo@ufu.br1982-45130103-1570opendoar:2023-08-25T14:35:59Sociedade & natureza (Online) - Universidade Federal de Uberlândia (UFU)false
dc.title.none.fl_str_mv Morphometric characterization of doliniform features in the Araguaia Plain
Caracterização morfométrica de feições doliniformes na Planície do Araguaia
title Morphometric characterization of doliniform features in the Araguaia Plain
spellingShingle Morphometric characterization of doliniform features in the Araguaia Plain
Manchola, Oscar Eduardo Paez
Mapeamento
Dolinas
Carste
Fragmentos florestais
Mapping
Sinkholes
Karst
Forest fragments
title_short Morphometric characterization of doliniform features in the Araguaia Plain
title_full Morphometric characterization of doliniform features in the Araguaia Plain
title_fullStr Morphometric characterization of doliniform features in the Araguaia Plain
title_full_unstemmed Morphometric characterization of doliniform features in the Araguaia Plain
title_sort Morphometric characterization of doliniform features in the Araguaia Plain
author Manchola, Oscar Eduardo Paez
author_facet Manchola, Oscar Eduardo Paez
Morais, Fernando de
author_role author
author2 Morais, Fernando de
author2_role author
dc.contributor.author.fl_str_mv Manchola, Oscar Eduardo Paez
Morais, Fernando de
dc.subject.por.fl_str_mv Mapeamento
Dolinas
Carste
Fragmentos florestais
Mapping
Sinkholes
Karst
Forest fragments
topic Mapeamento
Dolinas
Carste
Fragmentos florestais
Mapping
Sinkholes
Karst
Forest fragments
description The Araguaia Plain has extensive areas of savannah scattered forest fragments similar to circular depressions. These features, in addition to serving as corridors, could be associated with important features such as karsts, closed-water connection structures and ecological-type formations. To identify this relationship and contribute to the understanding of its genesis, this study has as its main objective the morphometric analysis of doliniform functions in the Araguaia Plain. Through the geoenvironmental characterization of the study area; digital facility models – SRTM; interpretation of Sentinel 2-A satellite images from 2019 to 2020; and calculation of morphometric variables: area, perimeters, activity, altitude, length and density, Kernel circularity index. A total of 24,023 doliniform features associated with green/healthy vegetation were identified in a Coverage Area of 114,900 km², Concentrated Majoritariate in the Brazilian municipalities of Lagoa da Confusão -Tocantins; Pium-Tocantins and Cocalinho-Mato Grosso. The features showed circular superiority areas up to 10 km², circular activity indexes at 0.5 and up to 1 and 1.5, indicating a predominance of circular shapes on slopes of 3% in the NE orientation. Based on the results, it can be verified that these features present sinkholes, as they may be under the influence of patterns associated with some processes, denoting in some processes the existence of a covered karst.
publishDate 2023
dc.date.none.fl_str_mv 2023-03-27
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.ufu.br/index.php/sociedadenatureza/article/view/67351
10.14393/SN-v35-2023-67351
url https://seer.ufu.br/index.php/sociedadenatureza/article/view/67351
identifier_str_mv 10.14393/SN-v35-2023-67351
dc.language.iso.fl_str_mv por
eng
language por
eng
dc.relation.none.fl_str_mv https://seer.ufu.br/index.php/sociedadenatureza/article/view/67351/35881
https://seer.ufu.br/index.php/sociedadenatureza/article/view/67351/35882
dc.rights.driver.fl_str_mv Copyright (c) 2022 Oscar Eduardo Paez Manchola, Fernando Morais
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2022 Oscar Eduardo Paez Manchola, Fernando Morais
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Uberlândia
publisher.none.fl_str_mv Universidade Federal de Uberlândia
dc.source.none.fl_str_mv Sociedade & Natureza; Vol. 35 No. 1 (2023):
Sociedade & Natureza; v. 35 n. 1 (2023):
1982-4513
0103-1570
reponame:Sociedade & natureza (Online)
instname:Universidade Federal de Uberlândia (UFU)
instacron:UFU
instname_str Universidade Federal de Uberlândia (UFU)
instacron_str UFU
institution UFU
reponame_str Sociedade & natureza (Online)
collection Sociedade & natureza (Online)
repository.name.fl_str_mv Sociedade & natureza (Online) - Universidade Federal de Uberlândia (UFU)
repository.mail.fl_str_mv ||sociedade.natureza.ufu@gmail.com|| lucianamelo@ufu.br
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