Spatial patterns of magnetic susceptibility optimized by anisotropic correction in different Alisols in southern Amazonas, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , |
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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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 |
|
_version_ |
1799965033820585984 |