Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil

Detalhes bibliográficos
Autor(a) principal: Brito, Wildson Benedito Mendes
Data de Publicação: 2022
Outros Autores: Campos, Milton César Costa, de Souza, Fernando Gomes, Silva, Laércio Santos [UNESP], da Cunha, José Maurício, de Lima, Alan Ferreira Leite, Martins, Thalita Silva, de Oliveira, Flávio Pereira, de Oliveira, Ivanildo Amorim
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1007/s11119-021-09843-6
http://hdl.handle.net/11449/229424
Resumo: Changes in primary cover for agricultural crops in Amazonas region influence the phenomenon of spatial variability in soil properties. This phenomenon is still studied assuming that the spatial data is isotropic, but does not consider the anisotropic pattern of soil properties. Thus, the aim of this work was to characterize, identify and correct isotropic patterns of magnetic susceptibility (MS) measurements using anisotropic models that actually represent the spatial aspects of the data. Three cultivation areas and one under native forest, classified as Haplic Alisol, were georeferenced and sampled by a mesh system covering 192 samples per area. Texture, X-ray diffraction and frequency-dependent (χfd) and mass-specific (χlf and χhf) magnetic susceptibility analyzes were performed. Then, classical and geostatistical analyzes were applied to the data, assuming isotropy and anisotropy. All χ frequencies were shown to be spatially dependent, satisfying the isotropy hypothesis. Thereby, the application of anisotropic analysis was able to confirm the presence of all types of anisotropy in Alisols. Anisotropic correction provided an improvement in models that fit the directional trends within the areas, and provided a reduction in the nugget effect and an increase in the correlation ranges. Thus, the generated kriging maps improved the patches of zonal trends of greater or lesser χ that stand out at the level of sub-regions. These zones should, therefore, be used as indicators of variability, paying special attention during their management, especially in research related to the delimitation of specific management zones.
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spelling Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, BrazilAgricultural conversionIsotropyKrigingSoil magnetismSpatial variabilityChanges in primary cover for agricultural crops in Amazonas region influence the phenomenon of spatial variability in soil properties. This phenomenon is still studied assuming that the spatial data is isotropic, but does not consider the anisotropic pattern of soil properties. Thus, the aim of this work was to characterize, identify and correct isotropic patterns of magnetic susceptibility (MS) measurements using anisotropic models that actually represent the spatial aspects of the data. Three cultivation areas and one under native forest, classified as Haplic Alisol, were georeferenced and sampled by a mesh system covering 192 samples per area. Texture, X-ray diffraction and frequency-dependent (χfd) and mass-specific (χlf and χhf) magnetic susceptibility analyzes were performed. Then, classical and geostatistical analyzes were applied to the data, assuming isotropy and anisotropy. All χ frequencies were shown to be spatially dependent, satisfying the isotropy hypothesis. Thereby, the application of anisotropic analysis was able to confirm the presence of all types of anisotropy in Alisols. Anisotropic correction provided an improvement in models that fit the directional trends within the areas, and provided a reduction in the nugget effect and an increase in the correlation ranges. Thus, the generated kriging maps improved the patches of zonal trends of greater or lesser χ that stand out at the level of sub-regions. These zones should, therefore, be used as indicators of variability, paying special attention during their management, especially in research related to the delimitation of specific management zones.Amazon Environment and Soil Research Group (GPSAA) Federal University of Amazonas (UFAM), AmazonasAmazon Environment and Soil Research Group (GPSAA) Center of Agricultural Sciences Federal University of Paraíba (CCA/UFPB), ParaíbaDepartment of Agronomy Federal University of Roraima (UFRR), RoraimaSoil Characterization for Specific Management Research Group (CSME) Faculty of Agrarian and Veterinary Sciences Paulista State University (FCAV/UNESP), São PauloDepartment of Soils and Rural Engineering Agricultural Sciences Center Federal University of Paraíba (DSER/CCA/UFPB), ParaíbaFederal Institute of Rondônia (IFRO), RondôniaSoil Characterization for Specific Management Research Group (CSME) Faculty of Agrarian and Veterinary Sciences Paulista State University (FCAV/UNESP), São PauloFederal University of Amazonas (UFAM)Universidade Federal da Paraíba (UFPB)Federal University of Roraima (UFRR)Universidade Estadual Paulista (UNESP)Universidade Estadual de Maringá (UEM)Brito, Wildson Benedito MendesCampos, Milton César Costade Souza, Fernando GomesSilva, Laércio Santos [UNESP]da Cunha, José Mauríciode Lima, Alan Ferreira LeiteMartins, Thalita Silvade Oliveira, Flávio Pereirade Oliveira, Ivanildo Amorim2022-04-29T08:32:31Z2022-04-29T08:32:31Z2022-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article419-449http://dx.doi.org/10.1007/s11119-021-09843-6Precision Agriculture, v. 23, n. 2, p. 419-449, 2022.1573-16181385-2256http://hdl.handle.net/11449/22942410.1007/s11119-021-09843-62-s2.0-85113821797Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPrecision Agricultureinfo:eu-repo/semantics/openAccess2022-04-29T08:32:31Zoai:repositorio.unesp.br:11449/229424Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:32:31Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
title Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
spellingShingle Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
Brito, Wildson Benedito Mendes
Agricultural conversion
Isotropy
Kriging
Soil magnetism
Spatial variability
title_short Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
title_full Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
title_fullStr Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
title_full_unstemmed Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
title_sort Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
author Brito, Wildson Benedito Mendes
author_facet Brito, Wildson Benedito Mendes
Campos, Milton César Costa
de Souza, Fernando Gomes
Silva, Laércio Santos [UNESP]
da Cunha, José Maurício
de Lima, Alan Ferreira Leite
Martins, Thalita Silva
de Oliveira, Flávio Pereira
de Oliveira, Ivanildo Amorim
author_role author
author2 Campos, Milton César Costa
de Souza, Fernando Gomes
Silva, Laércio Santos [UNESP]
da Cunha, José Maurício
de Lima, Alan Ferreira Leite
Martins, Thalita Silva
de Oliveira, Flávio Pereira
de Oliveira, Ivanildo Amorim
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Federal University of Amazonas (UFAM)
Universidade Federal da Paraíba (UFPB)
Federal University of Roraima (UFRR)
Universidade Estadual Paulista (UNESP)
Universidade Estadual de Maringá (UEM)
dc.contributor.author.fl_str_mv Brito, Wildson Benedito Mendes
Campos, Milton César Costa
de Souza, Fernando Gomes
Silva, Laércio Santos [UNESP]
da Cunha, José Maurício
de Lima, Alan Ferreira Leite
Martins, Thalita Silva
de Oliveira, Flávio Pereira
de Oliveira, Ivanildo Amorim
dc.subject.por.fl_str_mv Agricultural conversion
Isotropy
Kriging
Soil magnetism
Spatial variability
topic Agricultural conversion
Isotropy
Kriging
Soil magnetism
Spatial variability
description Changes in primary cover for agricultural crops in Amazonas region influence the phenomenon of spatial variability in soil properties. This phenomenon is still studied assuming that the spatial data is isotropic, but does not consider the anisotropic pattern of soil properties. Thus, the aim of this work was to characterize, identify and correct isotropic patterns of magnetic susceptibility (MS) measurements using anisotropic models that actually represent the spatial aspects of the data. Three cultivation areas and one under native forest, classified as Haplic Alisol, were georeferenced and sampled by a mesh system covering 192 samples per area. Texture, X-ray diffraction and frequency-dependent (χfd) and mass-specific (χlf and χhf) magnetic susceptibility analyzes were performed. Then, classical and geostatistical analyzes were applied to the data, assuming isotropy and anisotropy. All χ frequencies were shown to be spatially dependent, satisfying the isotropy hypothesis. Thereby, the application of anisotropic analysis was able to confirm the presence of all types of anisotropy in Alisols. Anisotropic correction provided an improvement in models that fit the directional trends within the areas, and provided a reduction in the nugget effect and an increase in the correlation ranges. Thus, the generated kriging maps improved the patches of zonal trends of greater or lesser χ that stand out at the level of sub-regions. These zones should, therefore, be used as indicators of variability, paying special attention during their management, especially in research related to the delimitation of specific management zones.
publishDate 2022
dc.date.none.fl_str_mv 2022-04-29T08:32:31Z
2022-04-29T08:32:31Z
2022-04-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1007/s11119-021-09843-6
Precision Agriculture, v. 23, n. 2, p. 419-449, 2022.
1573-1618
1385-2256
http://hdl.handle.net/11449/229424
10.1007/s11119-021-09843-6
2-s2.0-85113821797
url http://dx.doi.org/10.1007/s11119-021-09843-6
http://hdl.handle.net/11449/229424
identifier_str_mv Precision Agriculture, v. 23, n. 2, p. 419-449, 2022.
1573-1618
1385-2256
10.1007/s11119-021-09843-6
2-s2.0-85113821797
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Precision Agriculture
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 419-449
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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