Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Bioscience journal (Online) |
Texto Completo: | https://seer.ufu.br/index.php/biosciencejournal/article/view/32656 |
Resumo: | Natural grasslands with savannah-like characteristics associated to forest mosaics are found within Southern and Eastern Amazonas, Western Rondônia and Northern Roraima, being conditioned to local edaphic factors. The aim of this study was to assess both physical and geospatial attributes of an Cambisol under natural grasslands and an Ultisol under a forest fragment in Humaitá - AM, Brazil. In each area, we established a sampling grid in the dimensions of 70 × 70 m, with regular sampling spacing of 10 m and three collection depths: 0.0-0.05, 0.05-0.10 and 0.10-0.20 m, totaling 192 sampling points. Macroporosity (MaP), microporosity (MiP), bulk density (Ds) and total porosity (TP) were determined by soil samples with preserved structure, using a volumetric ring. Soil resistance to penetration (SRP) was measured by an automatic penetrometer after being subjected to a 0.006 MPa tension. Data were submitted to descriptive statistics and geostatistics analysis. The soil under natural grasslands showed values considered critical of Ds, SRP, MaP at all evaluated depths, with significant values at 0.10-0.20 m layer of 1.54 kg dm-3; 2.08 MPa and 0.05 m3 m-3, respectively. Ultisol under the forest fragments showed higher range values and consequently greater geospatial continuity due to the assessed physical attributes, since this soil has a greater stability of its physical structure. Based on the physical properties of the soil, structural function ineffectiveness of the Ultisol is a key factor for the occurrence of grassland in this region. |
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Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil Soils attributesNatural grasslandsForestAgricultural SciencesNatural grasslands with savannah-like characteristics associated to forest mosaics are found within Southern and Eastern Amazonas, Western Rondônia and Northern Roraima, being conditioned to local edaphic factors. The aim of this study was to assess both physical and geospatial attributes of an Cambisol under natural grasslands and an Ultisol under a forest fragment in Humaitá - AM, Brazil. In each area, we established a sampling grid in the dimensions of 70 × 70 m, with regular sampling spacing of 10 m and three collection depths: 0.0-0.05, 0.05-0.10 and 0.10-0.20 m, totaling 192 sampling points. Macroporosity (MaP), microporosity (MiP), bulk density (Ds) and total porosity (TP) were determined by soil samples with preserved structure, using a volumetric ring. Soil resistance to penetration (SRP) was measured by an automatic penetrometer after being subjected to a 0.006 MPa tension. Data were submitted to descriptive statistics and geostatistics analysis. The soil under natural grasslands showed values considered critical of Ds, SRP, MaP at all evaluated depths, with significant values at 0.10-0.20 m layer of 1.54 kg dm-3; 2.08 MPa and 0.05 m3 m-3, respectively. Ultisol under the forest fragments showed higher range values and consequently greater geospatial continuity due to the assessed physical attributes, since this soil has a greater stability of its physical structure. Based on the physical properties of the soil, structural function ineffectiveness of the Ultisol is a key factor for the occurrence of grassland in this region.EDUFU2016-04-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/3265610.14393/BJ-v32n2a2016-32656Bioscience Journal ; Vol. 32 No. 2 (2016): Mar./Apr.; 422-430Bioscience Journal ; v. 32 n. 2 (2016): Mar./Apr.; 422-4301981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/32656/18136Brazil; ContemporaryCopyright (c) 2016 Leandro Coutinho Alho, Milton Cesar Costa Campos, Bruno Campos Mantovanelli, Douglas Marcelo Pinheiro Silva, Zigomar Menezes Souza, Jose Mauricio da Cunha, Marcelo Dayron Rodrigues Soareshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessAlho, Leandro CoutinhoCampos, Milton Cesar CostaMantovanelli, Bruno CamposSilva, Douglas Marcelo PinheiroSouza, Zigomar MenezesCunha, Jose Mauricio daSoares, Marcelo Dayron Rodrigues2022-05-18T15:41:24Zoai:ojs.www.seer.ufu.br:article/32656Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-05-18T15:41:24Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
title |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
spellingShingle |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil Alho, Leandro Coutinho Soils attributes Natural grasslands Forest Agricultural Sciences |
title_short |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
title_full |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
title_fullStr |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
title_full_unstemmed |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
title_sort |
Physical and geospatial attributes of inceptisols and ultisols under native vegetation in Humaitá, AM, Brazil |
author |
Alho, Leandro Coutinho |
author_facet |
Alho, Leandro Coutinho Campos, Milton Cesar Costa Mantovanelli, Bruno Campos Silva, Douglas Marcelo Pinheiro Souza, Zigomar Menezes Cunha, Jose Mauricio da Soares, Marcelo Dayron Rodrigues |
author_role |
author |
author2 |
Campos, Milton Cesar Costa Mantovanelli, Bruno Campos Silva, Douglas Marcelo Pinheiro Souza, Zigomar Menezes Cunha, Jose Mauricio da Soares, Marcelo Dayron Rodrigues |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Alho, Leandro Coutinho Campos, Milton Cesar Costa Mantovanelli, Bruno Campos Silva, Douglas Marcelo Pinheiro Souza, Zigomar Menezes Cunha, Jose Mauricio da Soares, Marcelo Dayron Rodrigues |
dc.subject.por.fl_str_mv |
Soils attributes Natural grasslands Forest Agricultural Sciences |
topic |
Soils attributes Natural grasslands Forest Agricultural Sciences |
description |
Natural grasslands with savannah-like characteristics associated to forest mosaics are found within Southern and Eastern Amazonas, Western Rondônia and Northern Roraima, being conditioned to local edaphic factors. The aim of this study was to assess both physical and geospatial attributes of an Cambisol under natural grasslands and an Ultisol under a forest fragment in Humaitá - AM, Brazil. In each area, we established a sampling grid in the dimensions of 70 × 70 m, with regular sampling spacing of 10 m and three collection depths: 0.0-0.05, 0.05-0.10 and 0.10-0.20 m, totaling 192 sampling points. Macroporosity (MaP), microporosity (MiP), bulk density (Ds) and total porosity (TP) were determined by soil samples with preserved structure, using a volumetric ring. Soil resistance to penetration (SRP) was measured by an automatic penetrometer after being subjected to a 0.006 MPa tension. Data were submitted to descriptive statistics and geostatistics analysis. The soil under natural grasslands showed values considered critical of Ds, SRP, MaP at all evaluated depths, with significant values at 0.10-0.20 m layer of 1.54 kg dm-3; 2.08 MPa and 0.05 m3 m-3, respectively. Ultisol under the forest fragments showed higher range values and consequently greater geospatial continuity due to the assessed physical attributes, since this soil has a greater stability of its physical structure. Based on the physical properties of the soil, structural function ineffectiveness of the Ultisol is a key factor for the occurrence of grassland in this region. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-04 |
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/biosciencejournal/article/view/32656 10.14393/BJ-v32n2a2016-32656 |
url |
https://seer.ufu.br/index.php/biosciencejournal/article/view/32656 |
identifier_str_mv |
10.14393/BJ-v32n2a2016-32656 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/32656/18136 |
dc.rights.driver.fl_str_mv |
https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.coverage.none.fl_str_mv |
Brazil; Contemporary |
dc.publisher.none.fl_str_mv |
EDUFU |
publisher.none.fl_str_mv |
EDUFU |
dc.source.none.fl_str_mv |
Bioscience Journal ; Vol. 32 No. 2 (2016): Mar./Apr.; 422-430 Bioscience Journal ; v. 32 n. 2 (2016): Mar./Apr.; 422-430 1981-3163 reponame:Bioscience journal (Online) instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Bioscience journal (Online) |
collection |
Bioscience journal (Online) |
repository.name.fl_str_mv |
Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
biosciencej@ufu.br|| |
_version_ |
1797069075975766016 |