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Campo DC | Valor | Idioma |
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dc.contributor.author | Liang, Biqing | - |
dc.contributor.author | Lehmann, Johannes | - |
dc.contributor.author | Sohi, Saran P. | - |
dc.contributor.author | Thies, Janice E. | - |
dc.contributor.author | O'Neill, Brendan E. | - |
dc.contributor.author | Trujillo, Lucerina | - |
dc.contributor.author | Gaunt, John L. | - |
dc.contributor.author | Solomon, Dawit | - |
dc.contributor.author | Grossman, Julie M. | - |
dc.contributor.author | Neves, Eduardo Goés | - |
dc.contributor.author | Luizão, Flávio Jesus | - |
dc.date.accessioned | 2020-06-15T21:54:03Z | - |
dc.date.available | 2020-06-15T21:54:03Z | - |
dc.date.issued | 2010 | - |
dc.identifier.uri | https://repositorio.inpa.gov.br/handle/1/18353 | - |
dc.description.abstract | Black carbon (BC) is an important fraction of many soils worldwide and plays an important role in global C biogeochemistry. However, few studies have examined how it influences the mineralization of added organic matter (AOM) and its incorporation into soil physical fractions and whether BC decomposition is increased by AOM. BC-rich Anthrosols and BC-poor adjacent soils from the Central Amazon (Brazil) were incubated for 532 days either with or without addition of 13C-isotopically different plant residue. Total C mineralization from the BC-rich Anthrosols with AOM was 25.5% (P < 0.05) lower than with mineralization from the BC-poor adjacent soils. The AOM contributed to a significantly (P < 0.05) higher proportion to the total C mineralized in the BC-rich Anthrosols (91-92%) than the BC-poor adjacent soils (69-80%). The AOM was incorporated more rapidly in BC-rich than BC-poor soils from the separated free light fraction through the intra-aggregate light fraction into the stable organo-mineral fraction and up to 340% more AOM was found in the organo-mineral fraction. This more rapid stabilization was observed despite a significantly (P < 0.05) lower metabolic quotient for BC-rich Anthrosols. The microbial biomass (MB) was up to 125% greater (P < 0.05) in BC-rich Anthrosols than BC-poor adjacent soils. To account for increased MB adsorption onto BC during fumigation extraction, a correction factor was developed via addition of a 13C-enriched microbial culture. The recovery was found to be 21-41% lower (P < 0.05) for BC-rich than BC-poor soils due to re-adsorption of MB onto BC. Mineralization of native soil C was enhanced to a significantly greater degree in BC-poor adjacent soils compared to BC-rich Anthrosols as a result of AOM. No positive priming by way of cometabolism due to AOM could be found for aged BC in the soils. © 2009 Elsevier Ltd. All rights reserved. | en |
dc.language.iso | en | pt_BR |
dc.relation.ispartof | Volume 41, Número 2, Pags. 206-213 | pt_BR |
dc.rights | Restrito | * |
dc.subject | Black Carbon | en |
dc.subject | C Mineralization | en |
dc.subject | Cometabolism | en |
dc.subject | Correction Factors | en |
dc.subject | Enriched Microbial Cultures | en |
dc.subject | Fumigation Extractions | en |
dc.subject | Light Fraction | en |
dc.subject | Mb Adsorption | en |
dc.subject | Metabolic Quotient | en |
dc.subject | Microbial Biomass | en |
dc.subject | Native Soil | en |
dc.subject | Organic Matter | en |
dc.subject | Plant Residues | en |
dc.subject | Rapid Stabilization | en |
dc.subject | Adsorption | en |
dc.subject | Biogeochemistry | en |
dc.subject | Black Carbon | en |
dc.subject | Enhanced Recovery | en |
dc.subject | Mineralogy | en |
dc.subject | Organic Compounds | en |
dc.subject | Silicate Minerals | en |
dc.subject | Soils | en |
dc.subject | Biogeochemistry | en |
dc.subject | Black Carbon | en |
dc.subject | Carbon Cycle | en |
dc.subject | Carbon Isotope | en |
dc.subject | Fumigation | en |
dc.subject | Mineralization | en |
dc.subject | Soil Carbon | en |
dc.subject | Soil Organic Matter | en |
dc.subject | Soil Stabilization | en |
dc.subject | Amazonas | en |
dc.subject | Brasil | en |
dc.title | Black carbon affects the cycling of non-black carbon in soil | en |
dc.type | Artigo | pt_BR |
dc.identifier.doi | 10.1016/j.orggeochem.2009.09.007 | - |
dc.publisher.journal | Organic Geochemistry | pt_BR |
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