MODELING OF PHOSPHORUS LOSSES BY WATER EROSION
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n1p149-157/2018 http://hdl.handle.net/11449/160175 |
Resumo: | Phosphorus losses in runoff water and eroded sediment may increase the risk of eutrophication. Erosion prediction models can be used to assess and quantify nutrient losses and transport in different soil management scenarios. This study aimed to assess the performance of models to estimate the losses of available phosphorus in eroded sediments and assess their spatial variability pattern. The experiment was installed on a eutrophic Red Ultisol located in Tabapua, northwestern Sao Paulo State, Sao Domingos Stream Watershed. Aiming at estimating and validating the models, measurements were made from 2007 to 2015 at 17 observation points (slopes), determining soil phosphorus content (P-soil), eroded sediments (P-sed), and enrichment rate (ERsed). The models applied to estimate the enrichment rates of phosphorus in the eroded sediment and runoff are efficient when in use with the predictions of the model Water Erosion Prediction Project (WEPP). The enrichment rates obtained presented a Nash-Sutcliffe (NS) coefficient close to 1. Losses of soluble phosphorus in runoff above 0.02 mg L-1, a critical value for eutrophication, can be obtained in 81% of the watershed area with a probability higher than 75%. |
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Repositório Institucional da UNESP |
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MODELING OF PHOSPHORUS LOSSES BY WATER EROSIONWEPP modelenrichment ratespatial variabilityPhosphorus losses in runoff water and eroded sediment may increase the risk of eutrophication. Erosion prediction models can be used to assess and quantify nutrient losses and transport in different soil management scenarios. This study aimed to assess the performance of models to estimate the losses of available phosphorus in eroded sediments and assess their spatial variability pattern. The experiment was installed on a eutrophic Red Ultisol located in Tabapua, northwestern Sao Paulo State, Sao Domingos Stream Watershed. Aiming at estimating and validating the models, measurements were made from 2007 to 2015 at 17 observation points (slopes), determining soil phosphorus content (P-soil), eroded sediments (P-sed), and enrichment rate (ERsed). The models applied to estimate the enrichment rates of phosphorus in the eroded sediment and runoff are efficient when in use with the predictions of the model Water Erosion Prediction Project (WEPP). The enrichment rates obtained presented a Nash-Sutcliffe (NS) coefficient close to 1. Losses of soluble phosphorus in runoff above 0.02 mg L-1, a critical value for eutrophication, can be obtained in 81% of the watershed area with a probability higher than 75%.Univ Estadual Paulista, Jaboticabal, SP, BrazilUniv Estadual Paulista, Jaboticabal, SP, BrazilSoc Brasil Engenharia AgricolaUniversidade Estadual Paulista (Unesp)Farias, Vera L. da S. [UNESP]Martins Filho, Marcilio V. [UNESP]Paula, Daniela T. de [UNESP]Siqueira, Diego S. [UNESP]2018-11-26T15:47:45Z2018-11-26T15:47:45Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article149-157application/pdfhttp://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n1p149-157/2018Engenharia Agricola. Jaboticabal: Soc Brasil Engenharia Agricola, v. 38, n. 1, p. 149-157, 2018.0100-6916http://hdl.handle.net/11449/16017510.1590/1809-4430-Eng.Agric.v38n1p149-157/2018S0100-69162018000100149WOS:000428124100020S0100-69162018000100149.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEngenharia Agricola0,305info:eu-repo/semantics/openAccess2023-11-09T06:14:28Zoai:repositorio.unesp.br:11449/160175Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:16:03.580653Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
title |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
spellingShingle |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION Farias, Vera L. da S. [UNESP] WEPP model enrichment rate spatial variability |
title_short |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
title_full |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
title_fullStr |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
title_full_unstemmed |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
title_sort |
MODELING OF PHOSPHORUS LOSSES BY WATER EROSION |
author |
Farias, Vera L. da S. [UNESP] |
author_facet |
Farias, Vera L. da S. [UNESP] Martins Filho, Marcilio V. [UNESP] Paula, Daniela T. de [UNESP] Siqueira, Diego S. [UNESP] |
author_role |
author |
author2 |
Martins Filho, Marcilio V. [UNESP] Paula, Daniela T. de [UNESP] Siqueira, Diego S. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Farias, Vera L. da S. [UNESP] Martins Filho, Marcilio V. [UNESP] Paula, Daniela T. de [UNESP] Siqueira, Diego S. [UNESP] |
dc.subject.por.fl_str_mv |
WEPP model enrichment rate spatial variability |
topic |
WEPP model enrichment rate spatial variability |
description |
Phosphorus losses in runoff water and eroded sediment may increase the risk of eutrophication. Erosion prediction models can be used to assess and quantify nutrient losses and transport in different soil management scenarios. This study aimed to assess the performance of models to estimate the losses of available phosphorus in eroded sediments and assess their spatial variability pattern. The experiment was installed on a eutrophic Red Ultisol located in Tabapua, northwestern Sao Paulo State, Sao Domingos Stream Watershed. Aiming at estimating and validating the models, measurements were made from 2007 to 2015 at 17 observation points (slopes), determining soil phosphorus content (P-soil), eroded sediments (P-sed), and enrichment rate (ERsed). The models applied to estimate the enrichment rates of phosphorus in the eroded sediment and runoff are efficient when in use with the predictions of the model Water Erosion Prediction Project (WEPP). The enrichment rates obtained presented a Nash-Sutcliffe (NS) coefficient close to 1. Losses of soluble phosphorus in runoff above 0.02 mg L-1, a critical value for eutrophication, can be obtained in 81% of the watershed area with a probability higher than 75%. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T15:47:45Z 2018-11-26T15:47:45Z 2018-01-01 |
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://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n1p149-157/2018 Engenharia Agricola. Jaboticabal: Soc Brasil Engenharia Agricola, v. 38, n. 1, p. 149-157, 2018. 0100-6916 http://hdl.handle.net/11449/160175 10.1590/1809-4430-Eng.Agric.v38n1p149-157/2018 S0100-69162018000100149 WOS:000428124100020 S0100-69162018000100149.pdf |
url |
http://dx.doi.org/10.1590/1809-4430-Eng.Agric.v38n1p149-157/2018 http://hdl.handle.net/11449/160175 |
identifier_str_mv |
Engenharia Agricola. Jaboticabal: Soc Brasil Engenharia Agricola, v. 38, n. 1, p. 149-157, 2018. 0100-6916 10.1590/1809-4430-Eng.Agric.v38n1p149-157/2018 S0100-69162018000100149 WOS:000428124100020 S0100-69162018000100149.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Engenharia Agricola 0,305 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
149-157 application/pdf |
dc.publisher.none.fl_str_mv |
Soc Brasil Engenharia Agricola |
publisher.none.fl_str_mv |
Soc Brasil Engenharia Agricola |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128781901103104 |