Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil
Main Author: | |
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Publication Date: | 2016 |
Other Authors: | , , |
Format: | Article |
Language: | eng |
Source: | Semina. Ciências Agrárias (Online) |
Download full: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23484 |
Summary: | Changes in soil use and management can affect the soil aggregation, including aggregate formation by biogenic and physicogenic processes. The aim of this study was to analyze physical and biological influences on the genesis of soil aggregates in areas with different vegetations in the Atlantic Forest, as well as to compare physical and chemical attributes of the aggregates formed in different ways. Soil samples undeformed were collected at the layer of 0-10 cm in second-growth forests in different successional stages and a pasture area. To identify the pathways of aggregation were used morphological patterns proposed by Bullock et al. (1985), and established three clusters: fisiogenic, biogenic and intermediates. The aggregates were analyzed for aggregate stability, exchangeable cations, distribution of total organic carbon (TOC) and oxidizable fractions of total organic carbon. In all areas evaluated the percentage of physiogenic aggregates was higher than biogenic and intermediate aggregates. The biogenic aggregates were found at a smaller amount, with the highest means of MWD (4.520 mm and 4.896 mm) and GMS (3.678 mm and 4.479 mm) under SFAS and MMP areas. The biogenic aggregates presented higher levels of K and P between the morphological types in all areas studied, with the higher phosphorus levels in the SFAS area. The TOC content was also higher in the biogenic aggregates in all study areas, with 22.33 g kg-1 in SFAS, 25.60 g kg-1 in SFMS, 24.74 g kg-1 in SFIS and 20.28 g kg-1 in MMP. The highest content of the fractions F1 (6.93 g kg-1) and F2 (7.43 g kg-1) were found in the biogenic class compared to intermediate and physiogenic aggregates. The biological agregation process was the most efficient process in terms of soil structural stability and carbon sequestration, and biogenic aggregates may be considered indicators of soil quality. |
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Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern BrazilFormação de agregados e matéria orgânica do solo sob diferentes tipos de vegetação na Floresta Atlântica do Sudeste do BrasilAggregationAtlantic ForestOrganic carbonOxidizable fractions.AgregaçãoFloresta atlânticaCarbono orgânicoFrações oxidáveis.Changes in soil use and management can affect the soil aggregation, including aggregate formation by biogenic and physicogenic processes. The aim of this study was to analyze physical and biological influences on the genesis of soil aggregates in areas with different vegetations in the Atlantic Forest, as well as to compare physical and chemical attributes of the aggregates formed in different ways. Soil samples undeformed were collected at the layer of 0-10 cm in second-growth forests in different successional stages and a pasture area. To identify the pathways of aggregation were used morphological patterns proposed by Bullock et al. (1985), and established three clusters: fisiogenic, biogenic and intermediates. The aggregates were analyzed for aggregate stability, exchangeable cations, distribution of total organic carbon (TOC) and oxidizable fractions of total organic carbon. In all areas evaluated the percentage of physiogenic aggregates was higher than biogenic and intermediate aggregates. The biogenic aggregates were found at a smaller amount, with the highest means of MWD (4.520 mm and 4.896 mm) and GMS (3.678 mm and 4.479 mm) under SFAS and MMP areas. The biogenic aggregates presented higher levels of K and P between the morphological types in all areas studied, with the higher phosphorus levels in the SFAS area. The TOC content was also higher in the biogenic aggregates in all study areas, with 22.33 g kg-1 in SFAS, 25.60 g kg-1 in SFMS, 24.74 g kg-1 in SFIS and 20.28 g kg-1 in MMP. The highest content of the fractions F1 (6.93 g kg-1) and F2 (7.43 g kg-1) were found in the biogenic class compared to intermediate and physiogenic aggregates. The biological agregation process was the most efficient process in terms of soil structural stability and carbon sequestration, and biogenic aggregates may be considered indicators of soil quality.Mudanças no uso e manejo do solo podem afetar os processos de agregação, incluindo a formação de agregados por processos biogênicos e fisiogênicos. O objetivo deste estudo foi analisar a gênese de agregados por diferentes vias de formação, bem como atributos físicos e químicos dos agregados formados por essas vias em áreas com diferentes coberturas vegetais. Foram coletadas amostras de solo indeformadas na camada de 0-10 cm em áreas de floresta secundária com diferentes estádios sucessionais e uma área de pastagem. Para identificar as vias de agregação foram usados padrões morfológicos propostos por Bullock et al. (1985) e estabeleceu-se três grupos: fisiogênicos, biogênicas e intermediários. Os agregados foram analisados quanto à estabilidade em água, cátions trocáveis, teor de carbono orgânico total (COT) e frações oxidáveis do carbono orgânico total. Em todas as áreas avaliadas a porcentagem de agregados fisiogênicos foi maior do que a de agregados biogênicos e intermediários. Os agregados biogênicos foram encontrados em quantidade menor, com as maiores médias de Diâmetro Médio Ponderado (4.520 milímetros e 4.896 milímetros) e Diâmetro Médio Geométrico (3.678 milímetros e 4.479 milímetros) nas áreas de Floresta Secundária Estádio Avançado (FSEA) e Pasto Misto Manejado (PMM). Os agregados biogênicos apresentaram níveis mais elevados de K e P entre as classes morfológicas em todas as áreas estudadas, com os níveis de fósforo mais elevados na área de FSEA. O conteúdo COT também foi maior nos agregados biogênicos em todas as áreas de estudo, com 22.33 g kg-1 na FSEA, 25.60 g kg-1 na Floresta Secundária Estadio Médio (FSEM), 24.74 g kg-1 na Floresta Secundária Estadio Inicial (FSEI) e 20.28 g kg-1 em PMM. O maior teor de frações F1 (6.93 g kg-1) e F2 (7.43 g kg-1) foram encontrados na classe biogênica em comparação com agregados intermediários e fisiogênicos. O processo de agregação biológica é provavelmente o processo mais eficiente em termos de estabilidade estrutural do solo e sequestro de carbono e os agregados biogênicos podem ser considerados indicadores da qualidade do solo.UEL2016-12-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de Campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2348410.5433/1679-0359.2016v37n6p3927Semina: Ciências Agrárias; Vol. 37 No. 6 (2016); 3927-3940Semina: Ciências Agrárias; v. 37 n. 6 (2016); 3927-39401679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23484/20099Copyright (c) 2016 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSilva Neto, Eduardo Carvalho daPereira, Marcos GervasioFernandes, Júlio César FeitosaCorrêa Neto, Thais Andrade2022-11-29T15:30:36Zoai:ojs.pkp.sfu.ca:article/23484Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-29T15:30:36Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil Formação de agregados e matéria orgânica do solo sob diferentes tipos de vegetação na Floresta Atlântica do Sudeste do Brasil |
title |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil |
spellingShingle |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil Silva Neto, Eduardo Carvalho da Aggregation Atlantic Forest Organic carbon Oxidizable fractions. Agregação Floresta atlântica Carbono orgânico Frações oxidáveis. |
title_short |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil |
title_full |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil |
title_fullStr |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil |
title_full_unstemmed |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil |
title_sort |
Aggregate formation and soil organic matter under different vegetation in Atlantic Forest from Southeastern Brazil |
author |
Silva Neto, Eduardo Carvalho da |
author_facet |
Silva Neto, Eduardo Carvalho da Pereira, Marcos Gervasio Fernandes, Júlio César Feitosa Corrêa Neto, Thais Andrade |
author_role |
author |
author2 |
Pereira, Marcos Gervasio Fernandes, Júlio César Feitosa Corrêa Neto, Thais Andrade |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Silva Neto, Eduardo Carvalho da Pereira, Marcos Gervasio Fernandes, Júlio César Feitosa Corrêa Neto, Thais Andrade |
dc.subject.por.fl_str_mv |
Aggregation Atlantic Forest Organic carbon Oxidizable fractions. Agregação Floresta atlântica Carbono orgânico Frações oxidáveis. |
topic |
Aggregation Atlantic Forest Organic carbon Oxidizable fractions. Agregação Floresta atlântica Carbono orgânico Frações oxidáveis. |
description |
Changes in soil use and management can affect the soil aggregation, including aggregate formation by biogenic and physicogenic processes. The aim of this study was to analyze physical and biological influences on the genesis of soil aggregates in areas with different vegetations in the Atlantic Forest, as well as to compare physical and chemical attributes of the aggregates formed in different ways. Soil samples undeformed were collected at the layer of 0-10 cm in second-growth forests in different successional stages and a pasture area. To identify the pathways of aggregation were used morphological patterns proposed by Bullock et al. (1985), and established three clusters: fisiogenic, biogenic and intermediates. The aggregates were analyzed for aggregate stability, exchangeable cations, distribution of total organic carbon (TOC) and oxidizable fractions of total organic carbon. In all areas evaluated the percentage of physiogenic aggregates was higher than biogenic and intermediate aggregates. The biogenic aggregates were found at a smaller amount, with the highest means of MWD (4.520 mm and 4.896 mm) and GMS (3.678 mm and 4.479 mm) under SFAS and MMP areas. The biogenic aggregates presented higher levels of K and P between the morphological types in all areas studied, with the higher phosphorus levels in the SFAS area. The TOC content was also higher in the biogenic aggregates in all study areas, with 22.33 g kg-1 in SFAS, 25.60 g kg-1 in SFMS, 24.74 g kg-1 in SFIS and 20.28 g kg-1 in MMP. The highest content of the fractions F1 (6.93 g kg-1) and F2 (7.43 g kg-1) were found in the biogenic class compared to intermediate and physiogenic aggregates. The biological agregation process was the most efficient process in terms of soil structural stability and carbon sequestration, and biogenic aggregates may be considered indicators of soil quality. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-12-14 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa de Campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23484 10.5433/1679-0359.2016v37n6p3927 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23484 |
identifier_str_mv |
10.5433/1679-0359.2016v37n6p3927 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/23484/20099 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 37 No. 6 (2016); 3927-3940 Semina: Ciências Agrárias; v. 37 n. 6 (2016); 3927-3940 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
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1799306075054276608 |