Erosão hídrica em Latossolos Vermelhos distróficos
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | https://www.revistas.ufg.br/pat/article/view/31197 http://repositorio.ufla.br/jspui/handle/1/45809 |
Resumo: | In their natural state, Latosols (Oxisols) present great stability and resistance to erosion, being the most abundant and used soils for farming and cattle raising activities in southern Minas Gerais State, Brazil. However, along the last one hundred years, they have been submitted to intensive cultivation and managements which favor water erosion. This study aimed to estimate the water erosion rates of dystrophic Red Latosols from the Revised Universal Soil Loss Equation, compared with the soil loss tolerance limits, and assess the impact on water erosion of the managements more common in the region, by alternative conservation management simulation. Soil loss tolerance limits ranged from 8.94 Mg ha-1 year-1 to 9.99 Mg ha-1 year-1, with the study area presenting a susceptibility of soil loss of 23.86 Mg year-1, with an average rate of 8.40 Mg ha-1 year-1, corresponding to 34.80 % of the area with values above the soil loss tolerance limit. The biggest annual losses occur in areas with use and management of eucalyptus grown downhill (30.67 Mg ha-1 year-1) and pasture under continuous occupancy (11.10 Mg ha-1 year-1). However, when the average loss per type of use is considered, the areas more susceptible to water erosion are those with potato and eucalyptus crops, grown downhill, and those in bare soil. Nevertheless, in the simulated conservation management scenario, the average losses would be drastically reduced (8.40 Mg ha-1 year-1 to 2.84 Mg ha-1 year-1) and only 4.00 % of the area with soil loss would remain above the tolerance limits. |
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Erosão hídrica em Latossolos Vermelhos distróficosWater erosion of dystrophic Red Latosols (Oxisols)Water erosion modelingNo-tillage systemVegetal coverSoil managementModelagem de erosão hídricaSistema plantio diretoCobertura vegetalManejo do soloIn their natural state, Latosols (Oxisols) present great stability and resistance to erosion, being the most abundant and used soils for farming and cattle raising activities in southern Minas Gerais State, Brazil. However, along the last one hundred years, they have been submitted to intensive cultivation and managements which favor water erosion. This study aimed to estimate the water erosion rates of dystrophic Red Latosols from the Revised Universal Soil Loss Equation, compared with the soil loss tolerance limits, and assess the impact on water erosion of the managements more common in the region, by alternative conservation management simulation. Soil loss tolerance limits ranged from 8.94 Mg ha-1 year-1 to 9.99 Mg ha-1 year-1, with the study area presenting a susceptibility of soil loss of 23.86 Mg year-1, with an average rate of 8.40 Mg ha-1 year-1, corresponding to 34.80 % of the area with values above the soil loss tolerance limit. The biggest annual losses occur in areas with use and management of eucalyptus grown downhill (30.67 Mg ha-1 year-1) and pasture under continuous occupancy (11.10 Mg ha-1 year-1). However, when the average loss per type of use is considered, the areas more susceptible to water erosion are those with potato and eucalyptus crops, grown downhill, and those in bare soil. Nevertheless, in the simulated conservation management scenario, the average losses would be drastically reduced (8.40 Mg ha-1 year-1 to 2.84 Mg ha-1 year-1) and only 4.00 % of the area with soil loss would remain above the tolerance limits.Em estado natural, os Latossolos apresentam grande estabilidade e resistência à erosão, sendo os mais abundantes e utilizados para atividades agropecuárias no sul de Minas Gerais. Contudo, nos últimos cem anos, estes foram submetidos a cultivos e manejos que favorecem a erosão hídrica. Este estudo objetivou estimar as taxas de erosão hídrica em Latossolos Vermelhos distróficos, a partir da Equação Universal de Perdas de Solo Revisada, em comparação com os limites de tolerância de perda de solo, e avaliar o impacto sobre a erosão hídrica dos manejos mais utilizados na região, pela simulação de alternativas de manejos conservacionistas. Os limites de tolerância de perda de solo variaram de 8,94 Mg ha-1 ano-1 a 9,99 Mg ha-1 ano-1, sendo que a área estudada apresenta suscetibilidade de perda de solo de 23,86 Mg ano-1, com taxa média de 8,40 Mg ha-1 ano-1, correspondendo a 34,80 % da área com valores acima do limite de tolerância de perda de solos. As maiores perdas anuais ocorrem nas áreas com uso e manejo de eucalipto (30,67 Mg ha-1 ano-1), com plantio morro abaixo, e pastagem sob lotação contínua (11,10 Mg ha-1 ano-1). Todavia, quando é considerada a perda média por tipo de uso, as áreas mais suscetíveis à erosão hídrica são as ocupadas pelas culturas de batata e eucalipto, com plantio morro abaixo, e as de solos expostos. Entretanto, no cenário simulado com manejo conservacionista, as perdas médias seriam reduzidas drasticamente (8,40 Mg ha-1 ano-1 para 2,84 Mg ha-1 ano-1) e restariam somente 4,00 % da área com perdas de solo acima do limite de tolerância.Universidade Federal de Goiás2020-12-08T20:25:28Z2020-12-08T20:25:28Z2015-06info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAYER, J. E. B. et al. Erosão hídrica em Latossolos Vermelhos distróficos. Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 2, p. 180-191, abr./jun. 2015.https://www.revistas.ufg.br/pat/article/view/31197http://repositorio.ufla.br/jspui/handle/1/45809Pesquisa Agropecuária Tropicalreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAyer, Joaquim Ernesto BernardesOlivetti, DiogoMincato, Ronaldo LuizSilva, Marx Leandro Navesinfo:eu-repo/semantics/openAccesseng2020-12-08T20:27:16Zoai:localhost:1/45809Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-12-08T20:27:16Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Erosão hídrica em Latossolos Vermelhos distróficos Water erosion of dystrophic Red Latosols (Oxisols) |
title |
Erosão hídrica em Latossolos Vermelhos distróficos |
spellingShingle |
Erosão hídrica em Latossolos Vermelhos distróficos Ayer, Joaquim Ernesto Bernardes Water erosion modeling No-tillage system Vegetal cover Soil management Modelagem de erosão hídrica Sistema plantio direto Cobertura vegetal Manejo do solo |
title_short |
Erosão hídrica em Latossolos Vermelhos distróficos |
title_full |
Erosão hídrica em Latossolos Vermelhos distróficos |
title_fullStr |
Erosão hídrica em Latossolos Vermelhos distróficos |
title_full_unstemmed |
Erosão hídrica em Latossolos Vermelhos distróficos |
title_sort |
Erosão hídrica em Latossolos Vermelhos distróficos |
author |
Ayer, Joaquim Ernesto Bernardes |
author_facet |
Ayer, Joaquim Ernesto Bernardes Olivetti, Diogo Mincato, Ronaldo Luiz Silva, Marx Leandro Naves |
author_role |
author |
author2 |
Olivetti, Diogo Mincato, Ronaldo Luiz Silva, Marx Leandro Naves |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Ayer, Joaquim Ernesto Bernardes Olivetti, Diogo Mincato, Ronaldo Luiz Silva, Marx Leandro Naves |
dc.subject.por.fl_str_mv |
Water erosion modeling No-tillage system Vegetal cover Soil management Modelagem de erosão hídrica Sistema plantio direto Cobertura vegetal Manejo do solo |
topic |
Water erosion modeling No-tillage system Vegetal cover Soil management Modelagem de erosão hídrica Sistema plantio direto Cobertura vegetal Manejo do solo |
description |
In their natural state, Latosols (Oxisols) present great stability and resistance to erosion, being the most abundant and used soils for farming and cattle raising activities in southern Minas Gerais State, Brazil. However, along the last one hundred years, they have been submitted to intensive cultivation and managements which favor water erosion. This study aimed to estimate the water erosion rates of dystrophic Red Latosols from the Revised Universal Soil Loss Equation, compared with the soil loss tolerance limits, and assess the impact on water erosion of the managements more common in the region, by alternative conservation management simulation. Soil loss tolerance limits ranged from 8.94 Mg ha-1 year-1 to 9.99 Mg ha-1 year-1, with the study area presenting a susceptibility of soil loss of 23.86 Mg year-1, with an average rate of 8.40 Mg ha-1 year-1, corresponding to 34.80 % of the area with values above the soil loss tolerance limit. The biggest annual losses occur in areas with use and management of eucalyptus grown downhill (30.67 Mg ha-1 year-1) and pasture under continuous occupancy (11.10 Mg ha-1 year-1). However, when the average loss per type of use is considered, the areas more susceptible to water erosion are those with potato and eucalyptus crops, grown downhill, and those in bare soil. Nevertheless, in the simulated conservation management scenario, the average losses would be drastically reduced (8.40 Mg ha-1 year-1 to 2.84 Mg ha-1 year-1) and only 4.00 % of the area with soil loss would remain above the tolerance limits. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06 2020-12-08T20:25:28Z 2020-12-08T20:25:28Z |
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 |
AYER, J. E. B. et al. Erosão hídrica em Latossolos Vermelhos distróficos. Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 2, p. 180-191, abr./jun. 2015. https://www.revistas.ufg.br/pat/article/view/31197 http://repositorio.ufla.br/jspui/handle/1/45809 |
identifier_str_mv |
AYER, J. E. B. et al. Erosão hídrica em Latossolos Vermelhos distróficos. Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 2, p. 180-191, abr./jun. 2015. |
url |
https://www.revistas.ufg.br/pat/article/view/31197 http://repositorio.ufla.br/jspui/handle/1/45809 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Tropical reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1784550142042439680 |