USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/01000683rbcs20150525 http://hdl.handle.net/11449/211172 |
Resumo: | The lack of information concerning the variability of soil properties has been a major concern of researchers in the Amazon region. Thus, the aim of this study was to evaluate the spatial variability of soil chemical properties and determine minimal sampling density to characterize the variability of these properties in five environments located in the south of the State of Amazonas, Brazil. The five environments were archaeological dark earth (ADE), forest, pasture land, agroforestry operation, and sugarcane crop. Regular 70 × 70 m mesh grids were set up in these areas, with 64 sample points spaced at 10 m distance. Soil samples were collected at the 0.0-0.1 m depth. The chemical properties of pH in water, OM, P, K, Ca, Mg, H+Al, SB, CEC, and V were determined at these points. Data were analyzed by descriptive and geostatistical analyses. A large part of the data analyzed showed spatial dependence. Chemical properties were best fitted to the spherical model in almost all the environments evaluated, except for the sugarcane field with a better fit to the exponential model. ADE and sugarcane areas had greater heterogeneity of soil chemical properties, showing a greater range and higher sampling density; however, forest and agroforestry areas had less variability of chemical properties. |
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USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZILUSO DE SEMIVARIOGRAMAS ESCALONADOS NO PLANEJAMENTO AMOSTRAL DE ATRIBUTOS QUÍMICOS DO SOLO EM AMBIENTES NA REGIÃO SUL DO AMAZONASgeostatisticsAmazonian soilsarchaeological dark earthsampling densitygeoestatísticasolos da Amazôniaterra preta arqueológicadensidade amostralThe lack of information concerning the variability of soil properties has been a major concern of researchers in the Amazon region. Thus, the aim of this study was to evaluate the spatial variability of soil chemical properties and determine minimal sampling density to characterize the variability of these properties in five environments located in the south of the State of Amazonas, Brazil. The five environments were archaeological dark earth (ADE), forest, pasture land, agroforestry operation, and sugarcane crop. Regular 70 × 70 m mesh grids were set up in these areas, with 64 sample points spaced at 10 m distance. Soil samples were collected at the 0.0-0.1 m depth. The chemical properties of pH in water, OM, P, K, Ca, Mg, H+Al, SB, CEC, and V were determined at these points. Data were analyzed by descriptive and geostatistical analyses. A large part of the data analyzed showed spatial dependence. Chemical properties were best fitted to the spherical model in almost all the environments evaluated, except for the sugarcane field with a better fit to the exponential model. ADE and sugarcane areas had greater heterogeneity of soil chemical properties, showing a greater range and higher sampling density; however, forest and agroforestry areas had less variability of chemical properties.A escassez de informações sobre o comportamento espacial dos atributos dos solos na região amazônica tem sido preocupação de muitos pesquisadores. Assim, este trabalho teve como objetivos avaliar a variabilidade espacial de atributos químicos do solo e determinar a densidade amostral mínima para caracterizar a variabilidade desses atributos em cinco ambientes amazônicos. Este estudo foi realizado ao sul do Estado do Amazonas, em área com terra preta arqueológica (TPA), floresta, pastagem, agrofloresta e cana-de-açúcar. Nessas áreas, foram estabelecidas malhas de 70 × 70 m, com espaçamento regular de 10 m, totalizando 64 pontos em cada ambiente. Os solos foram coletados na profundidade de 0,0-0,10 m. Foram determinados os atributos químicos (pH em água, MO, P, K, Ca, Mg, H+Al, SB, CTC e V). Os dados foram analisados utilizando-se técnicas de estatística descritiva e geoestatística. Grande parte dos atributos estudados apresentou estrutura de dependência espacial. O modelo esférico foi o que melhor se ajustou aos atributos químicos nos diferentes ambientes, onde somente a cana-de-açúcar evidenciou melhor ajuste ao modelo exponencial. As áreas de TPA e cana-de-açúcar mostraram maior heterogeneidade dos atributos químicos do solo, apresentando menor alcance e maior densidade amostral, e a área com floresta e agrofloresta apresentaram menor variabilidade dos atributos químicos.Universidade do Estado de São Paulo, Faculdade de Ciências Agrárias e VeterináriasUniversidade Federal do Amazonas, Instituto de Educação, Agricultura e AmbienteSociedade Brasileira de Ciência do SoloUniversidade do Estado de São PauloUniversidade Federal do AmazonasOliveira, Ivanildo Amorim DeCampos, Milton César CostaMarques, JoséAquino, Renato Eleotério DeTeixeira, Daniel De BortoliSilva, Douglas Marcelo Pinheiro Da2021-07-14T10:20:19Z2021-07-14T10:20:19Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article31-39application/pdfhttp://dx.doi.org/10.1590/01000683rbcs20150525Revista Brasileira de Ciência do Solo. Sociedade Brasileira de Ciência do Solo, v. 39, n. 1, p. 31-39, 2015.0100-06831806-9657http://hdl.handle.net/11449/21117210.1590/01000683rbcs20150525S0100-06832015000100031S0100-06832015000100031.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência do Soloinfo:eu-repo/semantics/openAccess2023-10-07T06:04:25Zoai:repositorio.unesp.br:11449/211172Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:14:42.359359Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL USO DE SEMIVARIOGRAMAS ESCALONADOS NO PLANEJAMENTO AMOSTRAL DE ATRIBUTOS QUÍMICOS DO SOLO EM AMBIENTES NA REGIÃO SUL DO AMAZONAS |
title |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL |
spellingShingle |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL Oliveira, Ivanildo Amorim De geostatistics Amazonian soils archaeological dark earth sampling density geoestatística solos da Amazônia terra preta arqueológica densidade amostral |
title_short |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL |
title_full |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL |
title_fullStr |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL |
title_full_unstemmed |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL |
title_sort |
USE OF SCALED SEMIVARIOGRAMS IN THE PLANNING SAMPLE OF SOIL CHEMICAL PROPERTIES IN SOUTHERN AMAZONAS, BRAZIL |
author |
Oliveira, Ivanildo Amorim De |
author_facet |
Oliveira, Ivanildo Amorim De Campos, Milton César Costa Marques, José Aquino, Renato Eleotério De Teixeira, Daniel De Bortoli Silva, Douglas Marcelo Pinheiro Da |
author_role |
author |
author2 |
Campos, Milton César Costa Marques, José Aquino, Renato Eleotério De Teixeira, Daniel De Bortoli Silva, Douglas Marcelo Pinheiro Da |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Estado de São Paulo Universidade Federal do Amazonas |
dc.contributor.author.fl_str_mv |
Oliveira, Ivanildo Amorim De Campos, Milton César Costa Marques, José Aquino, Renato Eleotério De Teixeira, Daniel De Bortoli Silva, Douglas Marcelo Pinheiro Da |
dc.subject.por.fl_str_mv |
geostatistics Amazonian soils archaeological dark earth sampling density geoestatística solos da Amazônia terra preta arqueológica densidade amostral |
topic |
geostatistics Amazonian soils archaeological dark earth sampling density geoestatística solos da Amazônia terra preta arqueológica densidade amostral |
description |
The lack of information concerning the variability of soil properties has been a major concern of researchers in the Amazon region. Thus, the aim of this study was to evaluate the spatial variability of soil chemical properties and determine minimal sampling density to characterize the variability of these properties in five environments located in the south of the State of Amazonas, Brazil. The five environments were archaeological dark earth (ADE), forest, pasture land, agroforestry operation, and sugarcane crop. Regular 70 × 70 m mesh grids were set up in these areas, with 64 sample points spaced at 10 m distance. Soil samples were collected at the 0.0-0.1 m depth. The chemical properties of pH in water, OM, P, K, Ca, Mg, H+Al, SB, CEC, and V were determined at these points. Data were analyzed by descriptive and geostatistical analyses. A large part of the data analyzed showed spatial dependence. Chemical properties were best fitted to the spherical model in almost all the environments evaluated, except for the sugarcane field with a better fit to the exponential model. ADE and sugarcane areas had greater heterogeneity of soil chemical properties, showing a greater range and higher sampling density; however, forest and agroforestry areas had less variability of chemical properties. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 2021-07-14T10:20:19Z 2021-07-14T10:20:19Z |
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/10.1590/01000683rbcs20150525 Revista Brasileira de Ciência do Solo. Sociedade Brasileira de Ciência do Solo, v. 39, n. 1, p. 31-39, 2015. 0100-0683 1806-9657 http://hdl.handle.net/11449/211172 10.1590/01000683rbcs20150525 S0100-06832015000100031 S0100-06832015000100031.pdf |
url |
http://dx.doi.org/10.1590/01000683rbcs20150525 http://hdl.handle.net/11449/211172 |
identifier_str_mv |
Revista Brasileira de Ciência do Solo. Sociedade Brasileira de Ciência do Solo, v. 39, n. 1, p. 31-39, 2015. 0100-0683 1806-9657 10.1590/01000683rbcs20150525 S0100-06832015000100031 S0100-06832015000100031.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciência do Solo |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
31-39 application/pdf |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
dc.source.none.fl_str_mv |
SciELO 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_ |
1808128335103918080 |