SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Caatinga |
Texto Completo: | https://periodicos.ufersa.edu.br/caatinga/article/view/7197 |
Resumo: | Evaluating spatial variability of hydraulic properties and salinity of soils is important for an adequate agricultural management of alluvial soils, and protection of riparian vegetation. Thus, the objective of this work was to evaluate the accuracy of geophysical techniques for indirect measurements of apparent electrical conductivity (ECa), using an electromagnetic induction equipment (EM38®), and soil physical hydraulic parameters and their spatial interrelations. The study was carried out at the Advanced Research Unit of the UFRPE, in the Brígida River Basin, in Panamirim, state of Pernambuco, Brazil, in the second half of 2016. This river had a 100 m wide riparian forest strip transversely to the river bank on both sides of the river. A regular 20×10 m grid with 80 points was used to evaluate the soil hydraulic conductivity and ECa. The geostatistics showed the spatial dependence and the dependence of the soil attributes, their spatialization, and precise mapping through indirect readings. Most of the variability (86%) in soil electrical conductivity was explained by indirect readings using the EM38®. Ranges of 80 m, 380 m, and 134 m were found for soil moisture, ECa, and hydraulic conductivity, respectively, presenting strong spatial dependence. The results showed the importance of riparian forests to the maintenance of soil moisture and porosity to the improvement of soil water infiltration capacity even under severe water deficit conditions and soil subsurface layers. |
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SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEYESPACIALIZAÇÃO DA CONDUTIVIDADE ELÉTRICA E PARÂMETROS FÍSICO-HÍDRICOS SOB DIFERENTES USOS EM REGIÃO ALUVIALEM38. Ecosystem services. Soil use. Beerkan. Geostatistics.EM38. Serviços ecossistêmicos. Uso de solo. Beerkan. Geoestatística.Evaluating spatial variability of hydraulic properties and salinity of soils is important for an adequate agricultural management of alluvial soils, and protection of riparian vegetation. Thus, the objective of this work was to evaluate the accuracy of geophysical techniques for indirect measurements of apparent electrical conductivity (ECa), using an electromagnetic induction equipment (EM38®), and soil physical hydraulic parameters and their spatial interrelations. The study was carried out at the Advanced Research Unit of the UFRPE, in the Brígida River Basin, in Panamirim, state of Pernambuco, Brazil, in the second half of 2016. This river had a 100 m wide riparian forest strip transversely to the river bank on both sides of the river. A regular 20×10 m grid with 80 points was used to evaluate the soil hydraulic conductivity and ECa. The geostatistics showed the spatial dependence and the dependence of the soil attributes, their spatialization, and precise mapping through indirect readings. Most of the variability (86%) in soil electrical conductivity was explained by indirect readings using the EM38®. Ranges of 80 m, 380 m, and 134 m were found for soil moisture, ECa, and hydraulic conductivity, respectively, presenting strong spatial dependence. The results showed the importance of riparian forests to the maintenance of soil moisture and porosity to the improvement of soil water infiltration capacity even under severe water deficit conditions and soil subsurface layers.A caracterização da estrutura de variabilidade espacial de propriedades hidráulicas e da salinidade do solo é de grande importância para um adequado manejo agrícola de vales aluviais e para proteção da vegetação ciliar. Dessa forma, o objetivo deste trabalho foi a verificação da precisão de medições indiretas da condutividade elétrica aparente (CEa) utilizando o EM38®, bem como de parâmetros físico-hídricos do solo, e suas inter-relações espaciais. O estudo foi desenvolvido na Unidade Avançada de Pesquisa da UFRPE, localizada na Bacia do Rio Brígida, município de Panamirim-PE, no período do segundo semestre de 2016, possuindo uma faixa de mata ciliar de 100 m de largura, transversalmente a cada margem do rio. Adotou-se uma área com malha regular 20 x 10 m, totalizando 80 pontos, onde foram feitas avaliações da condutividade hidráulica e a calibração da CEa. A utilização da geoestatística permitiu identificar a dependência espacial e a dependência de todos atributos estudados, possibilitando sua espacialização e a utilização das leituras indiretas no mapeamento de precisão. Verificou-se que 86% da variabilidade da condutividade elétrica do solo pode ser explicada pelas leituras indiretas com o equipamento de indução eletromagnética (EM38®). Os valores de alcance foram de 80 m, 380 m e 134 m foram obtidas para a umidade do solo, CEa e condutividade hidráulica, respectivamente, as quais apresentaram forte dependência espacial. Verificou-se a relevância da mata ciliar na manutenção de umidade e porosidade do solo e, principalmente, contribuição para uma maior capacidade de infiltração do solo, mesmo para condições severas de escassez, e para as camadas sub-superficiais do mesmo.Universidade Federal Rural do Semi-Árido2019-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufersa.edu.br/caatinga/article/view/719710.1590/1983-21252019v32n122rcREVISTA CAATINGA; Vol. 32 No. 1 (2019); 222-233Revista Caatinga; v. 32 n. 1 (2019); 222-2331983-21250100-316Xreponame:Revista Caatingainstname:Universidade Federal Rural do Semi-Árido (UFERSA)instacron:UFERSAenghttps://periodicos.ufersa.edu.br/caatinga/article/view/7197/9933Copyright (c) 2019 Revista Caatingainfo:eu-repo/semantics/openAccessLopes, IugMontenegro, Abelardo Antônio de Assunção2023-07-20T16:58:59Zoai:ojs.periodicos.ufersa.edu.br:article/7197Revistahttps://periodicos.ufersa.edu.br/index.php/caatinga/indexPUBhttps://periodicos.ufersa.edu.br/index.php/caatinga/oaipatricio@ufersa.edu.br|| caatinga@ufersa.edu.br1983-21250100-316Xopendoar:2024-04-29T09:46:33.895171Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA)true |
dc.title.none.fl_str_mv |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY ESPACIALIZAÇÃO DA CONDUTIVIDADE ELÉTRICA E PARÂMETROS FÍSICO-HÍDRICOS SOB DIFERENTES USOS EM REGIÃO ALUVIAL |
title |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY |
spellingShingle |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY Lopes, Iug EM38. Ecosystem services. Soil use. Beerkan. Geostatistics. EM38. Serviços ecossistêmicos. Uso de solo. Beerkan. Geoestatística. |
title_short |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY |
title_full |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY |
title_fullStr |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY |
title_full_unstemmed |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY |
title_sort |
SPATIALIZATION OF ELECTRICAL CONDUCTIVITY AND PHYSICAL HYDRAULIC PARAMETERS OF SOILS UNDER DIFFERENT USES IN AN ALLUVIAL VALLEY |
author |
Lopes, Iug |
author_facet |
Lopes, Iug Montenegro, Abelardo Antônio de Assunção |
author_role |
author |
author2 |
Montenegro, Abelardo Antônio de Assunção |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Lopes, Iug Montenegro, Abelardo Antônio de Assunção |
dc.subject.por.fl_str_mv |
EM38. Ecosystem services. Soil use. Beerkan. Geostatistics. EM38. Serviços ecossistêmicos. Uso de solo. Beerkan. Geoestatística. |
topic |
EM38. Ecosystem services. Soil use. Beerkan. Geostatistics. EM38. Serviços ecossistêmicos. Uso de solo. Beerkan. Geoestatística. |
description |
Evaluating spatial variability of hydraulic properties and salinity of soils is important for an adequate agricultural management of alluvial soils, and protection of riparian vegetation. Thus, the objective of this work was to evaluate the accuracy of geophysical techniques for indirect measurements of apparent electrical conductivity (ECa), using an electromagnetic induction equipment (EM38®), and soil physical hydraulic parameters and their spatial interrelations. The study was carried out at the Advanced Research Unit of the UFRPE, in the Brígida River Basin, in Panamirim, state of Pernambuco, Brazil, in the second half of 2016. This river had a 100 m wide riparian forest strip transversely to the river bank on both sides of the river. A regular 20×10 m grid with 80 points was used to evaluate the soil hydraulic conductivity and ECa. The geostatistics showed the spatial dependence and the dependence of the soil attributes, their spatialization, and precise mapping through indirect readings. Most of the variability (86%) in soil electrical conductivity was explained by indirect readings using the EM38®. Ranges of 80 m, 380 m, and 134 m were found for soil moisture, ECa, and hydraulic conductivity, respectively, presenting strong spatial dependence. The results showed the importance of riparian forests to the maintenance of soil moisture and porosity to the improvement of soil water infiltration capacity even under severe water deficit conditions and soil subsurface layers. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-04-01 |
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://periodicos.ufersa.edu.br/caatinga/article/view/7197 10.1590/1983-21252019v32n122rc |
url |
https://periodicos.ufersa.edu.br/caatinga/article/view/7197 |
identifier_str_mv |
10.1590/1983-21252019v32n122rc |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.ufersa.edu.br/caatinga/article/view/7197/9933 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2019 Revista Caatinga info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2019 Revista Caatinga |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
publisher.none.fl_str_mv |
Universidade Federal Rural do Semi-Árido |
dc.source.none.fl_str_mv |
REVISTA CAATINGA; Vol. 32 No. 1 (2019); 222-233 Revista Caatinga; v. 32 n. 1 (2019); 222-233 1983-2125 0100-316X reponame:Revista Caatinga instname:Universidade Federal Rural do Semi-Árido (UFERSA) instacron:UFERSA |
instname_str |
Universidade Federal Rural do Semi-Árido (UFERSA) |
instacron_str |
UFERSA |
institution |
UFERSA |
reponame_str |
Revista Caatinga |
collection |
Revista Caatinga |
repository.name.fl_str_mv |
Revista Caatinga - Universidade Federal Rural do Semi-Árido (UFERSA) |
repository.mail.fl_str_mv |
patricio@ufersa.edu.br|| caatinga@ufersa.edu.br |
_version_ |
1797674027151523840 |