Carbon stocks and pools in relation to the texture of kaolinitic soils from the brazilian east coast
dc.contributor.author | Gomes, João Bosco Vasconcellos | pt_BR |
dc.contributor.author | Silva, Carlos Alberto | pt_BR |
dc.contributor.author | Ferreira, Tamara Letícia de Azevedo | pt_BR |
dc.contributor.author | Ferreira, Mozart Martins | pt_BR |
dc.contributor.author | Inda Junior, Alberto Vasconcellos | pt_BR |
dc.contributor.author | Curi, Nilton | pt_BR |
dc.date.accessioned | 2018-11-28T02:45:29Z | pt_BR |
dc.date.issued | 2018 | pt_BR |
dc.identifier.issn | 0100-0683 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/185152 | pt_BR |
dc.description.abstract | Extremely kaolinitic soils of Tertiary age elevations on the Brazilian east coast present a wide range of texture, which is recognized as one of the main factors controlling the soil organic matter contents. This study aimed to investigate the organic C storage of different compartments of kaolinitic soils. The studied soils had a wide particle size gradient, were under native forest vegetation, and located on Brazil’s eastern coast (Coruripe - CF, Umbaúba - UF, Nova Viçosa - VF, Sooretama - SF, and Itaboraí - IF). The forest cover of all sites allows to record soil properties reference values for a land use condition closer to that of the original sites. We determined soil organic C (SOC) content and SOC stock up to a depth of 1 m, C of topsoil (0.00-0.08 m), aggregate size classes, and dissolved organic carbon (DOC) of the soil surface horizon (A horizon). Soil C stocks at the 0.00-1.00 m depth ranged from 105 to 137 Mg ha-1 and were not regulated by soil texture. The SF soils stored more C up to a depth of 1 m, while lower mean C stocks were found for UF and CF soils. Soil texture was not a reliable index to predict the C contents of the aggregate size classes of the 0.00-0.08 m layer (within each class and in total, using equivalent soil mass of the classes). The most clayey soils had a high percentage of 2-4 mm aggregates and, as a consequence, high aggregate stability indices, which are positively correlated to silt plus clay contents of the soil surface horizon. The proportion of DOC in relation to the total organic C of the surface soil horizon was high for IF and UF areas, which are the less preserved forest fragments among all studied fragments. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Revista brasileira de ciencia do solo. Viçosa. Vol. 42 (set. 2018), [art.] e0170260 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Dissolved organic C | en |
dc.subject | Carbono | pt_BR |
dc.subject | Aggregate size distribution | en |
dc.subject | Caulinita | pt_BR |
dc.subject | Coastal tablelands | en |
dc.subject | Química do solo | pt_BR |
dc.subject | Organic matter-mineral complexes | en |
dc.title | Carbon stocks and pools in relation to the texture of kaolinitic soils from the brazilian east coast | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001078981 | pt_BR |
dc.type.origin | Nacional | pt_BR |
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