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| Demolinari,Michelle de Sales Moreira; Sousa,Rodrigo Nogueira de; Silva,Ivo Ribeiro da; Teixeira,Rafael da Silva; Neves,Júlio César Lima; Mendes,Gilberto de Oliveira. |
| ABSTRACT The amount of harvest residues retained in Eucalyptus plantations strongly influences soil organic matter (SOM), but the efficiency of conversion to SOM may vary according to the type of residue. This study evaluated the recovery of C from Eucalyptus residue components - leaves, bark, branches, roots, and a mix of all residues - in different SOM fractions with or without mineral-N supplementation (200 mg kg-1 of N). Variation in natural 13C abundance was used to trace the destination of residue-derived C in the soil. The C content of the light fraction (LF) and heavy fraction (HF) of SOM increased over a 240-days decomposition period in response to incorporation of Eucalyptus residues in the soil. Bark and leaf residues showed the best results.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C cycling; N cycling; SOM; Stable isotopes. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100418 |
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