Spatial variability of the stability of aggregates and organic matter in soils with different relieves
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/6798 |
Resumo: | Soils submitted to the same management system in places with small relief variation manifest different spatial variability on their attributes. The objective of this work was to evaluate the spatial variability of the geometric medium diameter, aggregates in the >2 mm class, aggregates in the 2–1 mm class and organic matter of an Oxisol under culture of the sugarcane. Samplings of the soil in regular intervals of 10 m, in grid form, totaling 100 points, collected in the depths of 0.0–0.2 m and 0.2–0.4 m were made. Data were submitted to descriptive statistics, geostatistics and in sequence to kriging analyzes. Values of the variation coefficient were low for organic matter in the depth of 0.0–0.2 m, mean in the depth of 0.2–0.4 m, high for geometric medium diameter and mean for aggregates in the >2 mm class, aggregates in the 2–1 mm class in all studied depths. The occurrence of space dependence was observed for all the variables, and the largest ones were observed in the depth of 0.0–0.2 m. Small variations in the forms of the relief condition spatial variability differentiated for organic matter and stability of aggregates in the studied depths. |
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Spatial variability of the stability of aggregates and organic matter in soils with different relievesVariabilidade espacial da estabilidade de agregados e matéria orgânica em solos de relevos diferentesSaccharum officinarum; geostatistics; kriging; soil-landscape relationship; oxisolsSaccharum officinarum; geoestatística; krigagem; relação solo-paisagem; LatossoloSoils submitted to the same management system in places with small relief variation manifest different spatial variability on their attributes. The objective of this work was to evaluate the spatial variability of the geometric medium diameter, aggregates in the >2 mm class, aggregates in the 2–1 mm class and organic matter of an Oxisol under culture of the sugarcane. Samplings of the soil in regular intervals of 10 m, in grid form, totaling 100 points, collected in the depths of 0.0–0.2 m and 0.2–0.4 m were made. Data were submitted to descriptive statistics, geostatistics and in sequence to kriging analyzes. Values of the variation coefficient were low for organic matter in the depth of 0.0–0.2 m, mean in the depth of 0.2–0.4 m, high for geometric medium diameter and mean for aggregates in the >2 mm class, aggregates in the 2–1 mm class in all studied depths. The occurrence of space dependence was observed for all the variables, and the largest ones were observed in the depth of 0.0–0.2 m. Small variations in the forms of the relief condition spatial variability differentiated for organic matter and stability of aggregates in the studied depths.Solos submetidos ao mesmo sistema de manejo em locais com pequena variação de relevo manifestam variabilidade espacial de atributos diferenciada. O objetivo deste trabalho foi avaliar a variabilidade espacial do diâmetro médio geométrico de agregados na classe >2 mm, na classe 2–1 mm e da matéria orgânica em um Latossolo Vermelho eutroférrico sob cultivo de cana-de-açúcar. Foram feitas amostragens do solo em intervalos regulares de 10 m, em forma de malha, totalizando 100 pontos, coletadas nas profundidades de 0,0–0,2 m e 0,2–0,4 m. Os dados foram submetidos à análise estatística descritiva, geoestatística e krigagem. Em relação à matéria orgânica, os valores do coeficiente de variação foram baixos na profundidade de 0,0–0,2 m e médio na profundidade de 0,2–0,4 m; foi alto para o diâmetro médio geométrico e médio para agregados na classe >2 mm e agregados na classe 2–1 mm. Observou-se dependência espacial em todas as variáveis, e os maiores alcances foram observados na profundidade de 0,0–0,2 m nas variáveis estudadas. Pequenas variações no gradiente do declive e nas formas do relevo condicionaram variabilidade espacial diferenciada da matéria orgânica e estabilidade de agregados nas profundidades estudadas.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária Brasileirade Souza, Zigomar MenezesMarques Júnior, JoséPereira, Gener Tadeu2004-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/6798Pesquisa Agropecuaria Brasileira; v.39, n.5, maio 2004; 491-499Pesquisa Agropecuária Brasileira; v.39, n.5, maio 2004; 491-4991678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/6798/3854info:eu-repo/semantics/openAccess2014-07-18T18:49:13Zoai:ojs.seer.sct.embrapa.br:article/6798Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-07-18T18:49:13Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves Variabilidade espacial da estabilidade de agregados e matéria orgânica em solos de relevos diferentes |
title |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves |
spellingShingle |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves de Souza, Zigomar Menezes Saccharum officinarum; geostatistics; kriging; soil-landscape relationship; oxisols Saccharum officinarum; geoestatística; krigagem; relação solo-paisagem; Latossolo |
title_short |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves |
title_full |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves |
title_fullStr |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves |
title_full_unstemmed |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves |
title_sort |
Spatial variability of the stability of aggregates and organic matter in soils with different relieves |
author |
de Souza, Zigomar Menezes |
author_facet |
de Souza, Zigomar Menezes Marques Júnior, José Pereira, Gener Tadeu |
author_role |
author |
author2 |
Marques Júnior, José Pereira, Gener Tadeu |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
de Souza, Zigomar Menezes Marques Júnior, José Pereira, Gener Tadeu |
dc.subject.por.fl_str_mv |
Saccharum officinarum; geostatistics; kriging; soil-landscape relationship; oxisols Saccharum officinarum; geoestatística; krigagem; relação solo-paisagem; Latossolo |
topic |
Saccharum officinarum; geostatistics; kriging; soil-landscape relationship; oxisols Saccharum officinarum; geoestatística; krigagem; relação solo-paisagem; Latossolo |
description |
Soils submitted to the same management system in places with small relief variation manifest different spatial variability on their attributes. The objective of this work was to evaluate the spatial variability of the geometric medium diameter, aggregates in the >2 mm class, aggregates in the 2–1 mm class and organic matter of an Oxisol under culture of the sugarcane. Samplings of the soil in regular intervals of 10 m, in grid form, totaling 100 points, collected in the depths of 0.0–0.2 m and 0.2–0.4 m were made. Data were submitted to descriptive statistics, geostatistics and in sequence to kriging analyzes. Values of the variation coefficient were low for organic matter in the depth of 0.0–0.2 m, mean in the depth of 0.2–0.4 m, high for geometric medium diameter and mean for aggregates in the >2 mm class, aggregates in the 2–1 mm class in all studied depths. The occurrence of space dependence was observed for all the variables, and the largest ones were observed in the depth of 0.0–0.2 m. Small variations in the forms of the relief condition spatial variability differentiated for organic matter and stability of aggregates in the studied depths. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-05-01 |
dc.type.none.fl_str_mv |
|
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.sct.embrapa.br/index.php/pab/article/view/6798 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/6798 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/6798/3854 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.39, n.5, maio 2004; 491-499 Pesquisa Agropecuária Brasileira; v.39, n.5, maio 2004; 491-499 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416712792571904 |