SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/01000683rbcs20140496 http://hdl.handle.net/11449/164877 |
Resumo: | The difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black Earth under cultivation, and pasture in the region of Manicore, Amazonas. Grids of 70 x 70 m were established in these areas, demarcating points at a regular 10 x 10 m spacing, for a total of 64 points. These points were georeferenced, and then soil samples were taken at each point of the grid in the 0.00-0.20 and 0.40-0.60 m layers for determination of chemical properties (pH in water, organic matter, P, K, Ca, Mg, and potential acidity), physical properties (texture, macroporosity, microporosity, weighted mean diameter, bulk density, and particle density), and magnetic susceptibility. The data were subjected to analysis of variance, and mean values were compared by the Tukey test at 5 %. Descriptive statistics were carried out, as well as geostatistics with the use of scaled semivariograms, for characterization of variability. The range of the scaled semivariograms was used to determine the minimum sampling density to estimate the variability of the properties under study. The area of Archaeological Black Earth and pasture exhibited greater variability, with a lower range and higher sampling density (five points per hectare). Magnetic susceptibility exhibited spatial behavior similar to the physical and chemical properties studied, with the magnetic susceptibility sampling density near the sampling density of the soil properties in the environments under study. |
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SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZILgeostatisticsArchaeological Black Earthscaled semivariogramThe difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black Earth under cultivation, and pasture in the region of Manicore, Amazonas. Grids of 70 x 70 m were established in these areas, demarcating points at a regular 10 x 10 m spacing, for a total of 64 points. These points were georeferenced, and then soil samples were taken at each point of the grid in the 0.00-0.20 and 0.40-0.60 m layers for determination of chemical properties (pH in water, organic matter, P, K, Ca, Mg, and potential acidity), physical properties (texture, macroporosity, microporosity, weighted mean diameter, bulk density, and particle density), and magnetic susceptibility. The data were subjected to analysis of variance, and mean values were compared by the Tukey test at 5 %. Descriptive statistics were carried out, as well as geostatistics with the use of scaled semivariograms, for characterization of variability. The range of the scaled semivariograms was used to determine the minimum sampling density to estimate the variability of the properties under study. The area of Archaeological Black Earth and pasture exhibited greater variability, with a lower range and higher sampling density (five points per hectare). Magnetic susceptibility exhibited spatial behavior similar to the physical and chemical properties studied, with the magnetic susceptibility sampling density near the sampling density of the soil properties in the environments under study.Univ Estadual Paulista, Fac Ciencias Agr & Vet, Programa Posgrad Agron Ciencias Solo, Sao Paulo, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Sao Paulo, BrazilUniv Fed Amazonas, Inst Educ Agr & Ambiente, Humaita, Amazonas, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Programa Posgrad Agron Ciencias Solo, Sao Paulo, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Sao Paulo, BrazilSoc Brasileira De Ciencia Do SoloUniversidade Estadual Paulista (Unesp)Univ Fed AmazonasOliveira, Ivanildo Amorim de [UNESP]Marques Junior, Jose [UNESP]Costa Campos, Milton CesarAquino, Renato Eleoterio de [UNESP]Freitas, Ludmila de [UNESP]Siqueira, Diego Silva [UNESP]Cunha, Jose Mauricio da2018-11-27T00:47:55Z2018-11-27T00:47:55Z2015-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article668-681application/pdfhttp://dx.doi.org/10.1590/01000683rbcs20140496Revista Brasileira De Ciencia Do Solo. Vicosa: Soc Brasileira De Ciencia Do Solo, v. 39, n. 3, p. 668-681, 2015.0100-0683http://hdl.handle.net/11449/16487710.1590/01000683rbcs20140496S0100-06832015000300668WOS:000359314500004S0100-06832015000300668.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Brasileira De Ciencia Do Solo0,679info:eu-repo/semantics/openAccess2024-06-07T14:23:41Zoai:repositorio.unesp.br:11449/164877Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:50:47.661273Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
title |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
spellingShingle |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL Oliveira, Ivanildo Amorim de [UNESP] geostatistics Archaeological Black Earth scaled semivariogram |
title_short |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
title_full |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
title_fullStr |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
title_full_unstemmed |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
title_sort |
SPATIAL VARIABILITY AND SAMPLING DENSITY OF MAGNETIC SUSCEPTIBILITY AND SOIL PROPERTIES IN ULTISOLS OF THE MANICORE REGION, AM, BRAZIL |
author |
Oliveira, Ivanildo Amorim de [UNESP] |
author_facet |
Oliveira, Ivanildo Amorim de [UNESP] Marques Junior, Jose [UNESP] Costa Campos, Milton Cesar Aquino, Renato Eleoterio de [UNESP] Freitas, Ludmila de [UNESP] Siqueira, Diego Silva [UNESP] Cunha, Jose Mauricio da |
author_role |
author |
author2 |
Marques Junior, Jose [UNESP] Costa Campos, Milton Cesar Aquino, Renato Eleoterio de [UNESP] Freitas, Ludmila de [UNESP] Siqueira, Diego Silva [UNESP] Cunha, Jose Mauricio da |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Fed Amazonas |
dc.contributor.author.fl_str_mv |
Oliveira, Ivanildo Amorim de [UNESP] Marques Junior, Jose [UNESP] Costa Campos, Milton Cesar Aquino, Renato Eleoterio de [UNESP] Freitas, Ludmila de [UNESP] Siqueira, Diego Silva [UNESP] Cunha, Jose Mauricio da |
dc.subject.por.fl_str_mv |
geostatistics Archaeological Black Earth scaled semivariogram |
topic |
geostatistics Archaeological Black Earth scaled semivariogram |
description |
The difficulty in finding recent information on the spatial behavior of properties of soils in the Brazilian Amazon region has been a concern of many researchers. Due to the great difficulty and costs in assessing soil properties, alternative methods have been used for prediction, such as magnetic susceptibility. Thus, the objective of this study was to evaluate the spatial variability of magnetic susceptibility and of physical and chemical soil properties in an Argissolo Vermelho (Ultisol) from native forest, Archaeological Black Earth under cultivation, and pasture in the region of Manicore, Amazonas. Grids of 70 x 70 m were established in these areas, demarcating points at a regular 10 x 10 m spacing, for a total of 64 points. These points were georeferenced, and then soil samples were taken at each point of the grid in the 0.00-0.20 and 0.40-0.60 m layers for determination of chemical properties (pH in water, organic matter, P, K, Ca, Mg, and potential acidity), physical properties (texture, macroporosity, microporosity, weighted mean diameter, bulk density, and particle density), and magnetic susceptibility. The data were subjected to analysis of variance, and mean values were compared by the Tukey test at 5 %. Descriptive statistics were carried out, as well as geostatistics with the use of scaled semivariograms, for characterization of variability. The range of the scaled semivariograms was used to determine the minimum sampling density to estimate the variability of the properties under study. The area of Archaeological Black Earth and pasture exhibited greater variability, with a lower range and higher sampling density (five points per hectare). Magnetic susceptibility exhibited spatial behavior similar to the physical and chemical properties studied, with the magnetic susceptibility sampling density near the sampling density of the soil properties in the environments under study. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-05-01 2018-11-27T00:47:55Z 2018-11-27T00:47:55Z |
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/10.1590/01000683rbcs20140496 Revista Brasileira De Ciencia Do Solo. Vicosa: Soc Brasileira De Ciencia Do Solo, v. 39, n. 3, p. 668-681, 2015. 0100-0683 http://hdl.handle.net/11449/164877 10.1590/01000683rbcs20140496 S0100-06832015000300668 WOS:000359314500004 S0100-06832015000300668.pdf |
url |
http://dx.doi.org/10.1590/01000683rbcs20140496 http://hdl.handle.net/11449/164877 |
identifier_str_mv |
Revista Brasileira De Ciencia Do Solo. Vicosa: Soc Brasileira De Ciencia Do Solo, v. 39, n. 3, p. 668-681, 2015. 0100-0683 10.1590/01000683rbcs20140496 S0100-06832015000300668 WOS:000359314500004 S0100-06832015000300668.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Brasileira De Ciencia Do Solo 0,679 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
668-681 application/pdf |
dc.publisher.none.fl_str_mv |
Soc Brasileira De Ciencia Do Solo |
publisher.none.fl_str_mv |
Soc Brasileira De Ciencia Do Solo |
dc.source.none.fl_str_mv |
Web of Science 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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1808128990138859520 |