Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência e Agrotecnologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565 |
Resumo: | ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands and eucalyptus plantations. Regarding scenario 1, areas under pasture fell into the low (15.1%), medium (45.5%), high (27.1%) and very high (12.3%) P index categories. Environmental Protection Areas on scenario 2 decreased the P loss risk from the scenario 1 in 37.6%. Hence, the model outputs indicate that the reforestation of buffer zones can decrease P loss risk in the case increasing use of P fertilizer. The P index model is a potential support tool to promote judicious use of fertilizers and conservation practices at the Posses catchment. |
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Ciência e Agrotecnologia (Online) |
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Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenariosP indexnutrient losswater erosionland use managementenvironmental services.ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands and eucalyptus plantations. Regarding scenario 1, areas under pasture fell into the low (15.1%), medium (45.5%), high (27.1%) and very high (12.3%) P index categories. Environmental Protection Areas on scenario 2 decreased the P loss risk from the scenario 1 in 37.6%. Hence, the model outputs indicate that the reforestation of buffer zones can decrease P loss risk in the case increasing use of P fertilizer. The P index model is a potential support tool to promote judicious use of fertilizers and conservation practices at the Posses catchment.Editora da UFLA2017-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565Ciência e Agrotecnologia v.41 n.5 2017reponame:Ciência e Agrotecnologia (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLA10.1590/1413-70542017415012217info:eu-repo/semantics/openAccessBispo,Diêgo Faustolo AlvesSilva,Marx Leandro NavesMarques,João José Granate de Sá e MeloBechmann,MarianneBatista,Pedro Velloso GomesCuri,Niltoneng2017-11-09T00:00:00Zoai:scielo:S1413-70542017000500565Revistahttp://www.scielo.br/cagroPUBhttps://old.scielo.br/oai/scielo-oai.php||renpaiva@dbi.ufla.br|| editora@editora.ufla.br1981-18291413-7054opendoar:2022-11-22T16:31:32.958804Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA)true |
dc.title.none.fl_str_mv |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
title |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
spellingShingle |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios Bispo,Diêgo Faustolo Alves P index nutrient loss water erosion land use management environmental services. |
title_short |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
title_full |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
title_fullStr |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
title_full_unstemmed |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
title_sort |
Phosphorus transfer at a small catchment in southeastern Brazil: distributed modelling in different land use scenarios |
author |
Bispo,Diêgo Faustolo Alves |
author_facet |
Bispo,Diêgo Faustolo Alves Silva,Marx Leandro Naves Marques,João José Granate de Sá e Melo Bechmann,Marianne Batista,Pedro Velloso Gomes Curi,Nilton |
author_role |
author |
author2 |
Silva,Marx Leandro Naves Marques,João José Granate de Sá e Melo Bechmann,Marianne Batista,Pedro Velloso Gomes Curi,Nilton |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Bispo,Diêgo Faustolo Alves Silva,Marx Leandro Naves Marques,João José Granate de Sá e Melo Bechmann,Marianne Batista,Pedro Velloso Gomes Curi,Nilton |
dc.subject.por.fl_str_mv |
P index nutrient loss water erosion land use management environmental services. |
topic |
P index nutrient loss water erosion land use management environmental services. |
description |
ABSTRACT Identifying and ranking nutrient loss risk areas are important steps towards integrated catchment management. This study aimed to apply the P index model at the Posses catchment, south of the state of Minas Gerais, Brazil. We applied the P index for the current land use at the Posses catchment and for two hypothetical scenarios: scenario 1, in which P fertilizer was applied to all land uses, except for native forests; and scenario 2, which considered the use of P fertilizer as in scenario 1, and that the Environmental Protection Areas referring to the riparian forests and springs were totally restored. Considering current land use, almost the whole catchment area (91.4%) displayed a low P loss risk. The highest P index was associated to croplands and eucalyptus plantations. Regarding scenario 1, areas under pasture fell into the low (15.1%), medium (45.5%), high (27.1%) and very high (12.3%) P index categories. Environmental Protection Areas on scenario 2 decreased the P loss risk from the scenario 1 in 37.6%. Hence, the model outputs indicate that the reforestation of buffer zones can decrease P loss risk in the case increasing use of P fertilizer. The P index model is a potential support tool to promote judicious use of fertilizers and conservation practices at the Posses catchment. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000500565 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1413-70542017415012217 |
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 |
Editora da UFLA |
publisher.none.fl_str_mv |
Editora da UFLA |
dc.source.none.fl_str_mv |
Ciência e Agrotecnologia v.41 n.5 2017 reponame:Ciência e Agrotecnologia (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Ciência e Agrotecnologia (Online) |
collection |
Ciência e Agrotecnologia (Online) |
repository.name.fl_str_mv |
Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
||renpaiva@dbi.ufla.br|| editora@editora.ufla.br |
_version_ |
1799874970677936128 |