Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2020000200021 |
Resumo: | Abstract The mitigation of soil salinization and/or sodicization phenomena are considered one of the main challenges of irrigated agriculture. In Portugal, Lezíria Grande of Vila Franca de Xira is a region with increased salinization and sodicization risks due to the influence of tidal movement on groundwater. This study aimed to evaluate soil water and salt dynamics in an irrigated Fluvisol with a crop rotation of maize and annual ryegrass and to predict irrigation-induced risks of soil salinization. We first calibrated the Hydrus-1D model for predicting soil water flow and solute transport with observed field data (from June 2017 to October 2018). Hydrus-1D successfully simulated soil water content (RMSE= 0.019 m3m-3 and R2= 0.94), the total dissolved solids (TDS) in the soil (RMSE= 0.212 g L-1 and R2= 0.77) and the reduction in water uptake by roots due to osmotic stress. Afterward we evaluate future risks of soil salinization performing a scenario analysis considering irrigation with different water qualities (with an electrical conductivity of the irrigation water, ECw, of 1.5, 3 and 5 dS m-1). We observed that when the ECw increases to 5 dS m-1, the average solute concentration in the root zone rises to levels above the threshold tolerance of maize. Hydrus-1D successfully simulated soil water content and the total dissolved solids and is a very useful tool in planning and managing irrigation and in predicting soil salinity risks. |
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Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualitiessalinitymodellingsalts dynamicsrisks simulationAbstract The mitigation of soil salinization and/or sodicization phenomena are considered one of the main challenges of irrigated agriculture. In Portugal, Lezíria Grande of Vila Franca de Xira is a region with increased salinization and sodicization risks due to the influence of tidal movement on groundwater. This study aimed to evaluate soil water and salt dynamics in an irrigated Fluvisol with a crop rotation of maize and annual ryegrass and to predict irrigation-induced risks of soil salinization. We first calibrated the Hydrus-1D model for predicting soil water flow and solute transport with observed field data (from June 2017 to October 2018). Hydrus-1D successfully simulated soil water content (RMSE= 0.019 m3m-3 and R2= 0.94), the total dissolved solids (TDS) in the soil (RMSE= 0.212 g L-1 and R2= 0.77) and the reduction in water uptake by roots due to osmotic stress. Afterward we evaluate future risks of soil salinization performing a scenario analysis considering irrigation with different water qualities (with an electrical conductivity of the irrigation water, ECw, of 1.5, 3 and 5 dS m-1). We observed that when the ECw increases to 5 dS m-1, the average solute concentration in the root zone rises to levels above the threshold tolerance of maize. Hydrus-1D successfully simulated soil water content and the total dissolved solids and is a very useful tool in planning and managing irrigation and in predicting soil salinity risks.Sociedade de Ciências Agrárias de Portugal2020-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2020000200021Revista de Ciências Agrárias v.43 n.2 2020reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2020000200021Castanheira,Nádia L.Paz,Ana M.Farzamian,MohammadPaz,Maria CatarinaSantos,Fernando M.Fernandes,Manuel L.Pires,Fernando P.Gonçalves,Maria Conceiçãoinfo:eu-repo/semantics/openAccess2024-02-06T17:02:50Zoai:scielo:S0871-018X2020000200021Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:17:44.439483Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
title |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
spellingShingle |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities Castanheira,Nádia L. salinity modelling salts dynamics risks simulation |
title_short |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
title_full |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
title_fullStr |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
title_full_unstemmed |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
title_sort |
Modelling of soil water and salt dynamics and prediction of salinity risks in Lezíria (Portugal) in response to different irrigation water qualities |
author |
Castanheira,Nádia L. |
author_facet |
Castanheira,Nádia L. Paz,Ana M. Farzamian,Mohammad Paz,Maria Catarina Santos,Fernando M. Fernandes,Manuel L. Pires,Fernando P. Gonçalves,Maria Conceição |
author_role |
author |
author2 |
Paz,Ana M. Farzamian,Mohammad Paz,Maria Catarina Santos,Fernando M. Fernandes,Manuel L. Pires,Fernando P. Gonçalves,Maria Conceição |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Castanheira,Nádia L. Paz,Ana M. Farzamian,Mohammad Paz,Maria Catarina Santos,Fernando M. Fernandes,Manuel L. Pires,Fernando P. Gonçalves,Maria Conceição |
dc.subject.por.fl_str_mv |
salinity modelling salts dynamics risks simulation |
topic |
salinity modelling salts dynamics risks simulation |
description |
Abstract The mitigation of soil salinization and/or sodicization phenomena are considered one of the main challenges of irrigated agriculture. In Portugal, Lezíria Grande of Vila Franca de Xira is a region with increased salinization and sodicization risks due to the influence of tidal movement on groundwater. This study aimed to evaluate soil water and salt dynamics in an irrigated Fluvisol with a crop rotation of maize and annual ryegrass and to predict irrigation-induced risks of soil salinization. We first calibrated the Hydrus-1D model for predicting soil water flow and solute transport with observed field data (from June 2017 to October 2018). Hydrus-1D successfully simulated soil water content (RMSE= 0.019 m3m-3 and R2= 0.94), the total dissolved solids (TDS) in the soil (RMSE= 0.212 g L-1 and R2= 0.77) and the reduction in water uptake by roots due to osmotic stress. Afterward we evaluate future risks of soil salinization performing a scenario analysis considering irrigation with different water qualities (with an electrical conductivity of the irrigation water, ECw, of 1.5, 3 and 5 dS m-1). We observed that when the ECw increases to 5 dS m-1, the average solute concentration in the root zone rises to levels above the threshold tolerance of maize. Hydrus-1D successfully simulated soil water content and the total dissolved solids and is a very useful tool in planning and managing irrigation and in predicting soil salinity risks. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-06-01 |
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2020000200021 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2020000200021 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0871-018X2020000200021 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
publisher.none.fl_str_mv |
Sociedade de Ciências Agrárias de Portugal |
dc.source.none.fl_str_mv |
Revista de Ciências Agrárias v.43 n.2 2020 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799137270320594944 |