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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
09/03/2022 |
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Data da última atualização: |
09/03/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RAMALHO, B.; DIECKOW, J.; MELO, V. de F.; BROWN, G. G.; SIMON, P. L.; IBARR, M. A.; CUNHA, L.; KILLE, P.; TPI NETWORK. |
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Afiliação: |
BRUNA RAMALHO, UFPR; JEFERSON DIECKOW, UFPR; VANDER DE FREITAS MELO, UFPR; GEORGE GARDNER BROWN, CNPF; PRISCILA LUZIA SIMON, UFPR; MARIANA ALVES IBARR, UFPR; LUIS CUNHA, University of Coimbra; PETER KILLE, Cardiff University; TPI NETWORK, Cardiff University. |
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Título: |
Carbon and nitrogen storage and stability by mineral-organic association in physical fractions of anthropogenic dark earth and of reference soils in Amazonia. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Catena, v. 213, 106185, June 2022. 10 p. |
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DOI: |
https://doi.org/10.1016/j.catena.2022.106185 |
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Idioma: |
Inglês |
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Conteúdo: |
The anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that the organic matter in the clay fraction even of ADEs was predominantly of microbial origin, and not pyrogenic. We therefore conclude that the clay fraction proved to be an important location to the accumulation and stabilization of TOC and TN in these Anthrosols, possibly by mineral-organic association mechanisms. MenosThe anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that th... Mostrar Tudo |
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Palavras-Chave: |
Physical fractionation; Protection mechanisms. |
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Thesaurus Nal: |
Anthrosols; Clay fraction; Organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02718naa a2200289 a 4500
001 2140681
005 2022-03-09
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.catena.2022.106185$2DOI
100 1 $aRAMALHO, B.
245 $aCarbon and nitrogen storage and stability by mineral-organic association in physical fractions of anthropogenic dark earth and of reference soils in Amazonia.$h[electronic resource]
260 $c2022
520 $aThe anthropogenic dark earths (ADEs) are being assumed in recent years as a model representing the result of sustainable soil management practices carried out by Pre-Columbian peoples. However, little is known about the role of mineral-organic associations in organic matter storage in those soils compared to the emphasis generally given to the role of pyrogenic structures. We quantified the changes of carbon and nitrogen and their distribution in physical fractions of ADEs in relation to the reference (adjacent) soil. Four ADEs sites having the different soil textural classes of sandy clay loam, sandy clay, clayey, and very clayey were selected in the Amazon region of Brazil. Soil samples were collected from the 0?10 cm layer and a subset of the sample was separated into large aggregates (>500 micrômetro) and small aggregates (<500 micrômetro). The ADEs stored on average 45% more total organic carbon (TOC) and 44% more total nitrogen (TN) than the reference soils. Of the incremental TOC and TN in ADE relative to the reference soil, the silt size fraction stored on average 92% of this TOC and 37% of this TN and had C:N ratios as high as 25, which may indicate the presence of pyrogenic material. The clay fraction stored a substantial share of 27-46% of the incremental TOC and 27-66% of the incremental TN. The C:N ratio in the clay size fraction of ADEs, on average 10.5, was lower or not different than in the clay fraction of reference soil (average of 11.1), indicating that the organic matter in the clay fraction even of ADEs was predominantly of microbial origin, and not pyrogenic. We therefore conclude that the clay fraction proved to be an important location to the accumulation and stabilization of TOC and TN in these Anthrosols, possibly by mineral-organic association mechanisms.
650 $aAnthrosols
650 $aClay fraction
650 $aOrganic matter
653 $aPhysical fractionation
653 $aProtection mechanisms
700 1 $aDIECKOW, J.
700 1 $aMELO, V. de F.
700 1 $aBROWN, G. G.
700 1 $aSIMON, P. L.
700 1 $aIBARR, M. A.
700 1 $aCUNHA, L.
700 1 $aKILLE, P.
700 1 $aTPI NETWORK
773 $tCatena$gv. 213, 106185, June 2022. 10 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
17/01/2024 |
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Data da última atualização: |
17/01/2024 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
MARTINS, A. M. M.; VASQUES, G. M.; DART, R. de O.; CARVALHO JUNIOR, W. de; BHERING, S. B.; CHAGAS, C. da S.; PEREIRA, N. R.; CALDERANO FILHO, B. |
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Afiliação: |
ADINAN MARZULO MAIA MARTINS, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO; GUSTAVO DE MATTOS VASQUES, CNPS; RICARDO DE OLIVEIRA DART, CNPS; WALDIR DE CARVALHO JUNIOR, CNPS; SILVIO BARGE BHERING, CNPS; CESAR DA SILVA CHAGAS, CNPS; NILSON RENDEIRO PEREIRA, CNPS; BRAZ CALDERANO FILHO, CNPS. |
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Título: |
Comparação entre Modified Bare Soil Index e Normalized Difference Vegetation Index a partir de imagens Landsat 8 OLI em dois municípios do Mato Grosso do Sul. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE GEOINFORMÁTICA, 24., 2023, São José dos Campos. Anais [...]. São José dos Campos: INPE, 2023. p. 381-386. GEOINFO. |
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Idioma: |
Português |
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Conteúdo: |
Índices espectrais para a detecção de solos expostos contribuem para o monitoramento da degradação do solo e da cobertura da terra na agricultura. Nesse estudo, o Modified Bare Soil Index (MBI) e o Normalized Difference Vegetation Index (NDVI) derivados de imagens Landsat 8 OLI foram comparados na identificação de solos expostos em dois municípios do centro-oeste do Brasil. Resultados apontam coeficientes lineares negativos de -0,83 e -0,93 entre os índices espectrais nos municípios de Rio Brilhante e Inocência respectivamente. Vantagens, limitações, redundâncias e complementaridades do MBI em relação ao NDVI são discutidas e mostram o potencial do MBI para identificar solos expostos na região tropical. |
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Thesagro: |
Análise do Solo; Cobertura do Solo; Sensoriamento Remoto; Uso da Terra. |
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Thesaurus NAL: |
Digital images; Land cover; Land use; Remote sensing; Soil analysis. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1160911/1/Comparacao-entre-Modified-Bare-Soil-Index-2023.pdf
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Marc: |
LEADER 01783nam a2200301 a 4500
001 2160911
005 2024-01-17
008 2023 bl uuuu u00u1 u #d
100 1 $aMARTINS, A. M. M.
245 $aComparação entre Modified Bare Soil Index e Normalized Difference Vegetation Index a partir de imagens Landsat 8 OLI em dois municípios do Mato Grosso do Sul.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE GEOINFORMÁTICA, 24., 2023, São José dos Campos. Anais [...]. São José dos Campos: INPE, 2023. p. 381-386. GEOINFO.$c2023
520 $aÍndices espectrais para a detecção de solos expostos contribuem para o monitoramento da degradação do solo e da cobertura da terra na agricultura. Nesse estudo, o Modified Bare Soil Index (MBI) e o Normalized Difference Vegetation Index (NDVI) derivados de imagens Landsat 8 OLI foram comparados na identificação de solos expostos em dois municípios do centro-oeste do Brasil. Resultados apontam coeficientes lineares negativos de -0,83 e -0,93 entre os índices espectrais nos municípios de Rio Brilhante e Inocência respectivamente. Vantagens, limitações, redundâncias e complementaridades do MBI em relação ao NDVI são discutidas e mostram o potencial do MBI para identificar solos expostos na região tropical.
650 $aDigital images
650 $aLand cover
650 $aLand use
650 $aRemote sensing
650 $aSoil analysis
650 $aAnálise do Solo
650 $aCobertura do Solo
650 $aSensoriamento Remoto
650 $aUso da Terra
700 1 $aVASQUES, G. M.
700 1 $aDART, R. de O.
700 1 $aCARVALHO JUNIOR, W. de
700 1 $aBHERING, S. B.
700 1 $aCHAGAS, C. da S.
700 1 $aPEREIRA, N. R.
700 1 $aCALDERANO FILHO, B.
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