Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas

The isotopic composition of N and O of nitrate (NO3−) is usually employed to trace its sources of pollution in groundwater. In agricultural areas, the amount of NO3− that reaches the aquifers after fertilization is controlled by different transformation processes that can affect the nitrogen species...

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Autores: Margalef Marti, Rosanna, Llovet, Alba, Carrey Labarta, Raúl, Ribas, Angela, Domene, Xavier, Mattana, Stefania, Chin-Pampillo, Juan, Mondini, Claudio, Alcañiz, Josep M., Soler i Gil, Albert, Otero Pérez, Neus
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2021
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/200821
Acceso en línea:https://hdl.handle.net/2445/200821
Access Level:acceso abierto
Palabra clave:Nitrats
Composició dels sòls
Tractament biològic de depuració d'aigües residuals
Nitrates
Soil composition
Biological treatment of sewage
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spelling Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areasMargalef Marti, RosannaLlovet, AlbaCarrey Labarta, RaúlRibas, AngelaDomene, XavierMattana, StefaniaChin-Pampillo, JuanMondini, ClaudioAlcañiz, Josep M.Soler i Gil, AlbertOtero Pérez, NeusNitratsComposició dels sòlsTractament biològic de depuració d'aigües residualsNitratesSoil compositionBiological treatment of sewageThe isotopic composition of N and O of nitrate (NO3−) is usually employed to trace its sources of pollution in groundwater. In agricultural areas, the amount of NO3− that reaches the aquifers after fertilization is controlled by different transformation processes that can affect the nitrogen species isotopic composition. Aiming to address the reliability of using isotope tools to trace sources of groundwater NO3−, the goal of this study was to check the effect of fertilization on the isotopic composition of N compounds retained and leached from soils. The concentration and isotopic composition (δ15N and δ18O) of ammonium (NH4+), NO3− and nitrite (NO2−) was characterized after the application of pig slurry in lysimeters containing either soil under fallow (LF) or the same soil continuously cropped and fertilized (LC) during the previous six years. Results showed that the leached NO3− isotopic signature did not directly reflect the isotopic composition of the applied pig slurry. Just after fertilization, nitrification led to lower δ15NNO3 values in soil extracts and leachates (e.g. from +5.9 ± 0.9¿ to +3.8 ± 3.1¿ in soil extracts of LF lysimeters). These values increased after complete nitrification (+11.5 ± 1.3¿) towards the δ15Nbulk of pig slurry (+19.6 ± 0.5¿). Later on, due to soil organic matter and plant debris mineralization and subsequent nitrification, values decreased towards the initial δ15NNO3 of soil but remained above them (+8.6 ± 1.0¿). Both LF and LC experiments showed a similar trend and the latter ones allowed to reinforce that long-term fertilization with pig slurry can increase the soil δ15NNO3. Concerning the δ18O of NO3− from soil extracts and leachates, it mainly depended on the δ18O of irrigation water and oxygen, after nitrification of NH4+ from pig slurry. Therefore, studies aiming to trace groundwater NO3− pollution sources in rural areas by using an isotopic approach should consider the fertilization history of each setting. Also, analyzing the δ15Nbulk of soil is recommended, since it could mask the isotopic signature of the N applied through fertilization.Elsevier Ltd2023202320212023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion34 p.application/pdfhttps://hdl.handle.net/2445/200821Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.apgeochem.2020.104832Applied Geochemistry, 2021, vol. 125, p. 104832https://doi.org/10.1016/j.apgeochem.2020.104832cc-by-nc-nd (c) Elsevier Ltd, 2021https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2008212026-05-29T05:05:01Z
dc.title.none.fl_str_mv Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
title Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
spellingShingle Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
Margalef Marti, Rosanna
Nitrats
Composició dels sòls
Tractament biològic de depuració d'aigües residuals
Nitrates
Soil composition
Biological treatment of sewage
title_short Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
title_full Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
title_fullStr Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
title_full_unstemmed Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
title_sort Impact of fertilization with pig slurry on the isotopic composition of nitrate retained in soil and leached to groundwater in agricultural areas
dc.creator.none.fl_str_mv Margalef Marti, Rosanna
Llovet, Alba
Carrey Labarta, Raúl
Ribas, Angela
Domene, Xavier
Mattana, Stefania
Chin-Pampillo, Juan
Mondini, Claudio
Alcañiz, Josep M.
Soler i Gil, Albert
Otero Pérez, Neus
author Margalef Marti, Rosanna
author_facet Margalef Marti, Rosanna
Llovet, Alba
Carrey Labarta, Raúl
Ribas, Angela
Domene, Xavier
Mattana, Stefania
Chin-Pampillo, Juan
Mondini, Claudio
Alcañiz, Josep M.
Soler i Gil, Albert
Otero Pérez, Neus
author_role author
author2 Llovet, Alba
Carrey Labarta, Raúl
Ribas, Angela
Domene, Xavier
Mattana, Stefania
Chin-Pampillo, Juan
Mondini, Claudio
Alcañiz, Josep M.
Soler i Gil, Albert
Otero Pérez, Neus
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Nitrats
Composició dels sòls
Tractament biològic de depuració d'aigües residuals
Nitrates
Soil composition
Biological treatment of sewage
topic Nitrats
Composició dels sòls
Tractament biològic de depuració d'aigües residuals
Nitrates
Soil composition
Biological treatment of sewage
description The isotopic composition of N and O of nitrate (NO3−) is usually employed to trace its sources of pollution in groundwater. In agricultural areas, the amount of NO3− that reaches the aquifers after fertilization is controlled by different transformation processes that can affect the nitrogen species isotopic composition. Aiming to address the reliability of using isotope tools to trace sources of groundwater NO3−, the goal of this study was to check the effect of fertilization on the isotopic composition of N compounds retained and leached from soils. The concentration and isotopic composition (δ15N and δ18O) of ammonium (NH4+), NO3− and nitrite (NO2−) was characterized after the application of pig slurry in lysimeters containing either soil under fallow (LF) or the same soil continuously cropped and fertilized (LC) during the previous six years. Results showed that the leached NO3− isotopic signature did not directly reflect the isotopic composition of the applied pig slurry. Just after fertilization, nitrification led to lower δ15NNO3 values in soil extracts and leachates (e.g. from +5.9 ± 0.9¿ to +3.8 ± 3.1¿ in soil extracts of LF lysimeters). These values increased after complete nitrification (+11.5 ± 1.3¿) towards the δ15Nbulk of pig slurry (+19.6 ± 0.5¿). Later on, due to soil organic matter and plant debris mineralization and subsequent nitrification, values decreased towards the initial δ15NNO3 of soil but remained above them (+8.6 ± 1.0¿). Both LF and LC experiments showed a similar trend and the latter ones allowed to reinforce that long-term fertilization with pig slurry can increase the soil δ15NNO3. Concerning the δ18O of NO3− from soil extracts and leachates, it mainly depended on the δ18O of irrigation water and oxygen, after nitrification of NH4+ from pig slurry. Therefore, studies aiming to trace groundwater NO3− pollution sources in rural areas by using an isotopic approach should consider the fertilization history of each setting. Also, analyzing the δ15Nbulk of soil is recommended, since it could mask the isotopic signature of the N applied through fertilization.
publishDate 2021
dc.date.none.fl_str_mv 2021
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/200821
url https://hdl.handle.net/2445/200821
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.apgeochem.2020.104832
Applied Geochemistry, 2021, vol. 125, p. 104832
https://doi.org/10.1016/j.apgeochem.2020.104832
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier Ltd, 2021
https://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier Ltd, 2021
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 34 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier Ltd
publisher.none.fl_str_mv Elsevier Ltd
dc.source.none.fl_str_mv Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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