Assessing pedotransfer functions to estimate the soil water retention
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/42371 |
Resumo: | Considering the importance of soil water retention for agricultural and environmental purposes, the objective of this study was to assess three pedotransfer functions (PTFs) used to estimate the soil moisture at field capacity (FC) based on soil attributes easily determined. A collection of 17 soils from the Cerrado and Pantanal biomes, including surface and subsurface horizons, was used. PTF-1 considers clay, organic matter, coarse sand, and microporosity; PTF-2 clay, total sand, and organic matter; and PTF-3 only microporosity. The estimated FC values were correlated to soil moisture values measured at different soil water potentials (0, 6, 10, 33, 100, 300, and 1500 kPa) to verify which potential corresponded to estimated FC. The data were subjected to regression analysis and Mann-Whitney rank-sum test to compare predicted and measured values and to principal component analysis (PCA). The analysis of the full dataset indicated that there was a strong correlation (R 0.84-0.91; R2 0.71-0.82; RMSE 0.07-0.09) between estimated FC and soil water retention measured at potentials of 10 kPa and 33 kPa. FC estimated by PTF-3 correlated better with water holding capacity at 6 kPa. When the PTFs were reapplied to homogeneous soil groups (identified by PCA analysis), the correlation between predicted and measured FC was decreased. |
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Assessing pedotransfer functions to estimate the soil water retention Validação de funções de pedotransferência para estimativa da retenção de água no soloSoil-water retentionPrincipal component analysisSoil moistureAgricultural SciencesConsidering the importance of soil water retention for agricultural and environmental purposes, the objective of this study was to assess three pedotransfer functions (PTFs) used to estimate the soil moisture at field capacity (FC) based on soil attributes easily determined. A collection of 17 soils from the Cerrado and Pantanal biomes, including surface and subsurface horizons, was used. PTF-1 considers clay, organic matter, coarse sand, and microporosity; PTF-2 clay, total sand, and organic matter; and PTF-3 only microporosity. The estimated FC values were correlated to soil moisture values measured at different soil water potentials (0, 6, 10, 33, 100, 300, and 1500 kPa) to verify which potential corresponded to estimated FC. The data were subjected to regression analysis and Mann-Whitney rank-sum test to compare predicted and measured values and to principal component analysis (PCA). The analysis of the full dataset indicated that there was a strong correlation (R 0.84-0.91; R2 0.71-0.82; RMSE 0.07-0.09) between estimated FC and soil water retention measured at potentials of 10 kPa and 33 kPa. FC estimated by PTF-3 correlated better with water holding capacity at 6 kPa. When the PTFs were reapplied to homogeneous soil groups (identified by PCA analysis), the correlation between predicted and measured FC was decreased.Considerando a importância da retenção de água no solo para fins agronômicos e ambientais, objetivou-se com este trabalho avaliar três funções de pedotransferência (FP) para estimativa da capacidade de campo(CC) com base em atributos de solo facilmente determinados. Uma coleção de 17 solos dos biomas Cerrado e Pantanal, incluindo amostras superficiais e subsuperficiais, foram utilizadas. FP 1 considera o conteúdo de argila, matéria orgânica, areia grossa e microporosidade. FP 2 considera argila, areia total e matéria orgânica. A FP 3 leva em consideração apenas microporosidade. Os valores estimados de CC foram correlacionados aos valores de umidade obtidos em diferentes potenciais (0, 6, 10, 33, 100, 300, and 1500 kPa) com o intuito de verificar qual potencial corresponde à CC estimada. Os dados foram submetidos à análise de regressão, ao teste Mann-Whitney rank-sum para comparar valores medidos e estimados e realizada análise de componentes principais (PCA). Considerando todo o conjunto de dados, foi obtida umaforte correlação (R 0.84–0.91; R2 0.71–0.82; RMSE 0.07–0.09) entre CC estimada e a umidade do solo obtida nos potenciais de 10 kPa e 33 kPa. A CC estimada pela FP 3 correlacionou melhor com a retenção de água no potencial de 6 kPa. Quando as FP’s foram reaplicadas em grupos de solos homogêneos (identificados pela PCA), a correlação entre valores estimados e medidos diminuiu.EDUFU2018-12-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.ufu.br/index.php/biosciencejournal/article/view/4237110.14393/BJ-v34n6a2018-42371Bioscience Journal ; Vol. 34 (2018): Supplement 1; 177-188Bioscience Journal ; v. 34 (2018): Supplement 1; 177-1881981-3163reponame:Bioscience journal (Online)instname:Universidade Federal de Uberlândia (UFU)instacron:UFUenghttps://seer.ufu.br/index.php/biosciencejournal/article/view/42371/24804Brazil; ContemporaryCopyright (c) 2018 Bruno Teixeira Ribeiro, Adriana Monteiro da Costa, Bruno Montoani Silva, Fernando Oliveira Franco, Camila Silva Borgeshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessRibeiro, Bruno Teixeirada Costa, Adriana MonteiroSilva, Bruno MontoaniFranco, Fernando OliveiraBorges, Camila Silva2022-03-23T17:56:47Zoai:ojs.www.seer.ufu.br:article/42371Revistahttps://seer.ufu.br/index.php/biosciencejournalPUBhttps://seer.ufu.br/index.php/biosciencejournal/oaibiosciencej@ufu.br||1981-31631516-3725opendoar:2022-03-23T17:56:47Bioscience journal (Online) - Universidade Federal de Uberlândia (UFU)false |
dc.title.none.fl_str_mv |
Assessing pedotransfer functions to estimate the soil water retention Validação de funções de pedotransferência para estimativa da retenção de água no solo |
title |
Assessing pedotransfer functions to estimate the soil water retention |
spellingShingle |
Assessing pedotransfer functions to estimate the soil water retention Ribeiro, Bruno Teixeira Soil-water retention Principal component analysis Soil moisture Agricultural Sciences |
title_short |
Assessing pedotransfer functions to estimate the soil water retention |
title_full |
Assessing pedotransfer functions to estimate the soil water retention |
title_fullStr |
Assessing pedotransfer functions to estimate the soil water retention |
title_full_unstemmed |
Assessing pedotransfer functions to estimate the soil water retention |
title_sort |
Assessing pedotransfer functions to estimate the soil water retention |
author |
Ribeiro, Bruno Teixeira |
author_facet |
Ribeiro, Bruno Teixeira da Costa, Adriana Monteiro Silva, Bruno Montoani Franco, Fernando Oliveira Borges, Camila Silva |
author_role |
author |
author2 |
da Costa, Adriana Monteiro Silva, Bruno Montoani Franco, Fernando Oliveira Borges, Camila Silva |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Ribeiro, Bruno Teixeira da Costa, Adriana Monteiro Silva, Bruno Montoani Franco, Fernando Oliveira Borges, Camila Silva |
dc.subject.por.fl_str_mv |
Soil-water retention Principal component analysis Soil moisture Agricultural Sciences |
topic |
Soil-water retention Principal component analysis Soil moisture Agricultural Sciences |
description |
Considering the importance of soil water retention for agricultural and environmental purposes, the objective of this study was to assess three pedotransfer functions (PTFs) used to estimate the soil moisture at field capacity (FC) based on soil attributes easily determined. A collection of 17 soils from the Cerrado and Pantanal biomes, including surface and subsurface horizons, was used. PTF-1 considers clay, organic matter, coarse sand, and microporosity; PTF-2 clay, total sand, and organic matter; and PTF-3 only microporosity. The estimated FC values were correlated to soil moisture values measured at different soil water potentials (0, 6, 10, 33, 100, 300, and 1500 kPa) to verify which potential corresponded to estimated FC. The data were subjected to regression analysis and Mann-Whitney rank-sum test to compare predicted and measured values and to principal component analysis (PCA). The analysis of the full dataset indicated that there was a strong correlation (R 0.84-0.91; R2 0.71-0.82; RMSE 0.07-0.09) between estimated FC and soil water retention measured at potentials of 10 kPa and 33 kPa. FC estimated by PTF-3 correlated better with water holding capacity at 6 kPa. When the PTFs were reapplied to homogeneous soil groups (identified by PCA analysis), the correlation between predicted and measured FC was decreased. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-06 |
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/42371 10.14393/BJ-v34n6a2018-42371 |
url |
https://seer.ufu.br/index.php/biosciencejournal/article/view/42371 |
identifier_str_mv |
10.14393/BJ-v34n6a2018-42371 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://seer.ufu.br/index.php/biosciencejournal/article/view/42371/24804 |
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. 34 (2018): Supplement 1; 177-188 Bioscience Journal ; v. 34 (2018): Supplement 1; 177-188 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_ |
1797069080386076672 |