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| Registros recuperados : 3 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
02/03/2015 |
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Data da última atualização: |
02/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
PITOMBO, L. M.; CARMO, J. B.; DE MARIA, I. C.; ANDRADE, C. A. de. |
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Afiliação: |
LEONARDO MACHADO PITOMBO, IAC; JANAINA BRAGA DO CARMO, UFSCar; ISABELA CLERICI DE MARIA, IAC; CRISTIANO ALBERTO DE ANDRADE, CNPMA. |
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Título: |
Carbon sequestration and greenhouse gases emissions in soil under sewage sludge residual effects. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Scientia Agricola, Piracicaba, v. 72, n. 2, p. 147-156, 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The large volume of sewage sludge (SS) generated with high carbon (C) and nutrient content suggests that its agricultural use may represent an important alternative to soil carbon sequestration and provides a potential substitute for synthetic fertilizers. However, emissions of CH4 and N2O could neutralize benefits with increases in soil C or saving fertilizer production because these gases have a Global Warming Potential (GWP) 25 and 298 times greater than CO2, respectively. Thus, this study aimed to determine C and N content as well as greenhouse gases (GHG) fluxes from soils historically amended with SS. Sewage sludge was applied between 2001 and 2007, and maize (Zea mays L.) was sowed in every year between 2001 and 2009. We evaluated three treatments: Control (mineral fertilizer), 1SS (recommended rate) and 2SS (double rate). Carbon stocks (0-40 cm) were 58.8, 72.5 and 83.1 Mg ha?1 in the Control, 1SS and 2SS, respectively, whereas N stocks after two years without SS treatment were 4.8, 5.8, and 6.8 Mg ha?1, respectively. Soil CO2 flux was highly responsive to soil temperature in SS treatments, and soil water content greatly impacted gas flux in the Control. Soil N2O flux increased under the residual effects of SS, but in 1SS, the flux was similar to that found in moist tropical forests. Soil remained as a CH4 sink. Large stores of carbon following historical SS application indicate that its use could be used as a method for carbon sequestration, even under tropical conditions. MenosAbstract: The large volume of sewage sludge (SS) generated with high carbon (C) and nutrient content suggests that its agricultural use may represent an important alternative to soil carbon sequestration and provides a potential substitute for synthetic fertilizers. However, emissions of CH4 and N2O could neutralize benefits with increases in soil C or saving fertilizer production because these gases have a Global Warming Potential (GWP) 25 and 298 times greater than CO2, respectively. Thus, this study aimed to determine C and N content as well as greenhouse gases (GHG) fluxes from soils historically amended with SS. Sewage sludge was applied between 2001 and 2007, and maize (Zea mays L.) was sowed in every year between 2001 and 2009. We evaluated three treatments: Control (mineral fertilizer), 1SS (recommended rate) and 2SS (double rate). Carbon stocks (0-40 cm) were 58.8, 72.5 and 83.1 Mg ha?1 in the Control, 1SS and 2SS, respectively, whereas N stocks after two years without SS treatment were 4.8, 5.8, and 6.8 Mg ha?1, respectively. Soil CO2 flux was highly responsive to soil temperature in SS treatments, and soil water content greatly impacted gas flux in the Control. Soil N2O flux increased under the residual effects of SS, but in 1SS, the flux was similar to that found in moist tropical forests. Soil remained as a CH4 sink. Large stores of carbon following historical SS application indicate that its use could be used as a method for carbon sequestration, even under tro... Mostrar Tudo |
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Palavras-Chave: |
Climate changes. |
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Thesagro: |
Adubo de esgoto; Clima; Dióxido de Carbono; Impacto ambiental; Lodo residual; Nitrogênio. |
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Thesaurus NAL: |
Biosolids; Carbon dioxide; Environmental impact; Methane; Nitrogen; Nitrous oxide; Sewage sludge. |
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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/item/119105/1/2014AP56.pdf
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Marc: |
LEADER 02434naa a2200325 a 4500
001 2010402
005 2015-03-02
008 2015 bl --- 0-- u #d
100 1 $aPITOMBO, L. M.
245 $aCarbon sequestration and greenhouse gases emissions in soil under sewage sludge residual effects.$h[electronic resource]
260 $c2015
520 $aAbstract: The large volume of sewage sludge (SS) generated with high carbon (C) and nutrient content suggests that its agricultural use may represent an important alternative to soil carbon sequestration and provides a potential substitute for synthetic fertilizers. However, emissions of CH4 and N2O could neutralize benefits with increases in soil C or saving fertilizer production because these gases have a Global Warming Potential (GWP) 25 and 298 times greater than CO2, respectively. Thus, this study aimed to determine C and N content as well as greenhouse gases (GHG) fluxes from soils historically amended with SS. Sewage sludge was applied between 2001 and 2007, and maize (Zea mays L.) was sowed in every year between 2001 and 2009. We evaluated three treatments: Control (mineral fertilizer), 1SS (recommended rate) and 2SS (double rate). Carbon stocks (0-40 cm) were 58.8, 72.5 and 83.1 Mg ha?1 in the Control, 1SS and 2SS, respectively, whereas N stocks after two years without SS treatment were 4.8, 5.8, and 6.8 Mg ha?1, respectively. Soil CO2 flux was highly responsive to soil temperature in SS treatments, and soil water content greatly impacted gas flux in the Control. Soil N2O flux increased under the residual effects of SS, but in 1SS, the flux was similar to that found in moist tropical forests. Soil remained as a CH4 sink. Large stores of carbon following historical SS application indicate that its use could be used as a method for carbon sequestration, even under tropical conditions.
650 $aBiosolids
650 $aCarbon dioxide
650 $aEnvironmental impact
650 $aMethane
650 $aNitrogen
650 $aNitrous oxide
650 $aSewage sludge
650 $aAdubo de esgoto
650 $aClima
650 $aDióxido de Carbono
650 $aImpacto ambiental
650 $aLodo residual
650 $aNitrogênio
653 $aClimate changes
700 1 $aCARMO, J. B.
700 1 $aDE MARIA, I. C.
700 1 $aANDRADE, C. A. de
773 $tScientia Agricola, Piracicaba$gv. 72, n. 2, p. 147-156, 2015.
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Embrapa Meio Ambiente (CNPMA) |
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