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Registro Completo |
Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
Data corrente: |
07/01/2021 |
Data da última atualização: |
13/01/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MAIA, S. M. F.; GONZAGA, G. B. M.; SILVA, L. K. dos S.; LYRA, G. B.; GOMES, T. C. de A. |
Afiliação: |
STOECIO MALTA FERREIRA MAIA; GIORDANO BRUNO MEDEIROS GONZAGA; LEILIANE KRISTINE DOS SANTOS SILVA; GUILHERME BASTOS LYRA; TAMARA CLAUDIA DE ARAUJO GOMES, CPATC. |
Título: |
Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Soil Use and Management, v. 35, p. 433?442, 2019. |
DOI: |
10.1111/sum.12508 |
Idioma: |
Inglês |
Conteúdo: |
Quantifying the sensitivity of soil organic matter decomposition (SOM) to global warming is critical for predict future impacts of climate change on soil organic carbon stocks (SOC) and soil respiration, especially in semi-arid regions such as northeastern Brazil, where SOC stocks are naturally small. In this study, the responses of the labile and recalcitrant carbon components and soil respiration dynamics were evaluated in three different soil types and land use systems (native vegetation, cropland and pasture) of the Brazilian semi-arid region, when submitted to temperature increase. After 169 days of incubation, the results showed that an increase of 5°C generated an average increase in CO2 emission of 12.0%, but which could reach 28.1%. Overall, the labile carbon (LC) in areas of native vegetation showed greater sensitivity to temperature than in cropland areas. It was also observed that recalcitrant carbon (RC) was more sensitive to warming than LC. Our results indicate that Brazil's semi-arid region presents a substantial vulnerability to global warming, and that the sensitivity of RC and of LC in areas of native vegetation to warming can enhance SOC losses, contributing to positive feedback on climate change, and compromising the productive systems of the region. However, further studies evaluating other types of soil and texture and management systems should be carried out to consolidate the results obtained and to improve the understanding about SOM decomposition in the Brazilian semi-arid region. MenosQuantifying the sensitivity of soil organic matter decomposition (SOM) to global warming is critical for predict future impacts of climate change on soil organic carbon stocks (SOC) and soil respiration, especially in semi-arid regions such as northeastern Brazil, where SOC stocks are naturally small. In this study, the responses of the labile and recalcitrant carbon components and soil respiration dynamics were evaluated in three different soil types and land use systems (native vegetation, cropland and pasture) of the Brazilian semi-arid region, when submitted to temperature increase. After 169 days of incubation, the results showed that an increase of 5°C generated an average increase in CO2 emission of 12.0%, but which could reach 28.1%. Overall, the labile carbon (LC) in areas of native vegetation showed greater sensitivity to temperature than in cropland areas. It was also observed that recalcitrant carbon (RC) was more sensitive to warming than LC. Our results indicate that Brazil's semi-arid region presents a substantial vulnerability to global warming, and that the sensitivity of RC and of LC in areas of native vegetation to warming can enhance SOC losses, contributing to positive feedback on climate change, and compromising the productive systems of the region. However, further studies evaluating other types of soil and texture and management systems should be carried out to consolidate the results obtained and to improve the understanding about SOM decomposition i... Mostrar Tudo |
Thesagro: |
Carbono; Decomposição; Matéria Orgânica; Solo. |
Thesaurus Nal: |
Carbon; Organic soils; Soil. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219965/1/2019-Maia-et-al-Soil-Use-and-Management.pdf
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Marc: |
LEADER 02310naa a2200265 a 4500 001 2129051 005 2021-01-13 008 2019 bl uuuu u00u1 u #d 024 7 $a10.1111/sum.12508$2DOI 100 1 $aMAIA, S. M. F. 245 $aSoil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region.$h[electronic resource] 260 $c2019 520 $aQuantifying the sensitivity of soil organic matter decomposition (SOM) to global warming is critical for predict future impacts of climate change on soil organic carbon stocks (SOC) and soil respiration, especially in semi-arid regions such as northeastern Brazil, where SOC stocks are naturally small. In this study, the responses of the labile and recalcitrant carbon components and soil respiration dynamics were evaluated in three different soil types and land use systems (native vegetation, cropland and pasture) of the Brazilian semi-arid region, when submitted to temperature increase. After 169 days of incubation, the results showed that an increase of 5°C generated an average increase in CO2 emission of 12.0%, but which could reach 28.1%. Overall, the labile carbon (LC) in areas of native vegetation showed greater sensitivity to temperature than in cropland areas. It was also observed that recalcitrant carbon (RC) was more sensitive to warming than LC. Our results indicate that Brazil's semi-arid region presents a substantial vulnerability to global warming, and that the sensitivity of RC and of LC in areas of native vegetation to warming can enhance SOC losses, contributing to positive feedback on climate change, and compromising the productive systems of the region. However, further studies evaluating other types of soil and texture and management systems should be carried out to consolidate the results obtained and to improve the understanding about SOM decomposition in the Brazilian semi-arid region. 650 $aCarbon 650 $aOrganic soils 650 $aSoil 650 $aCarbono 650 $aDecomposição 650 $aMatéria Orgânica 650 $aSolo 700 1 $aGONZAGA, G. B. M. 700 1 $aSILVA, L. K. dos S. 700 1 $aLYRA, G. B. 700 1 $aGOMES, T. C. de A. 773 $tSoil Use and Management$gv. 35, p. 433?442, 2019.
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Embrapa Tabuleiros Costeiros (CPATC) |
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Registro Completo
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
30/01/2013 |
Data da última atualização: |
30/04/2020 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
CASTRO, M.; OLIVEIRA, D. H.; MARTINEZ, D.; SCHIEDECK, G.; ALVES, D.; SAVEGNAGO, L.; JACOB, R. G. |
Afiliação: |
GUSTAVO SCHIEDECK, CPACT. |
Título: |
Antioxidant effect of essential oil of the flowers and leaves of Tagetes minuta. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
In: BRAZILIAN SYMPOSIUM ON MEDICINAL CHEMISTRY, 6., 2012, Canela. [Proceedings...]. Canela: Brazilian Chemical Society, 2012. |
Idioma: |
Inglês |
Palavras-Chave: |
Chinchilla. |
Thesagro: |
Antioxidante; Óleo Essencial; Planta Medicinal. |
Thesaurus NAL: |
Antioxidants; Essential Oils; Medicinal Plants; Tagetes minuta. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 00831nam a2200265 a 4500 001 1947001 005 2020-04-30 008 2012 bl uuuu u00u1 u #d 100 1 $aCASTRO, M. 245 $aAntioxidant effect of essential oil of the flowers and leaves of Tagetes minuta.$h[electronic resource] 260 $aIn: BRAZILIAN SYMPOSIUM ON MEDICINAL CHEMISTRY, 6., 2012, Canela. [Proceedings...]. Canela: Brazilian Chemical Society$c2012 650 $aAntioxidants 650 $aEssential Oils 650 $aMedicinal Plants 650 $aTagetes minuta 650 $aAntioxidante 650 $aÓleo Essencial 650 $aPlanta Medicinal 653 $aChinchilla 700 1 $aOLIVEIRA, D. H. 700 1 $aMARTINEZ, D. 700 1 $aSCHIEDECK, G. 700 1 $aALVES, D. 700 1 $aSAVEGNAGO, L. 700 1 $aJACOB, R. G.
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