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http://hdl.handle.net/1843/61682| Tipo: | Artigo de Periódico |
| Título: | Carbon accumulation and partitioning above and belowground under coppiced and replanted eucalypt plantations |
| Autor(es): | Rodinei Facco Pegoraro Ivo Ribeiro da Silva Ivan Francisco de Souza Roberto Ferreira de Novais Nairam Félix de Barros Sebastião Fonseca |
| Resumen: | The extent to which the C sink strength of eucalypt plantations can be affected by coppicing or replanting remains unclear. To address this issue, we evaluated variations in C stocks under coppiced or replanted eucalypt stands formed by clones or seedlings. For each field assessment (0 [T0], 2.5, 3.5, 4.5, 5.5 and 7.0 years [at harvest]), tree biomass, litterfall, and soil C stocks (0–120 cm depth) were determined. At harvest, debarked stemwood productivity was similar under coppice or replanting, about 50.0 Mg C ha–1. Generally, coppiced stands favored subsoil C storage (40–100 cm), whereas replanted stands favored soil C accrual in topsoil (0–20 cm), depending on the genetic material. Relative to T0, soil C increased about 2.14, 1.91, and 1.84 Mg C ha–1 yr–1 under coppice, replanting with seedlings and clones, respectively. Coarse root biomass under these stands were about 17.3, 13.4, and 9.5 Mg C ha–1, respectively, equivalent to 50% of total harvest residues. Hence, inputs from coarse roots could represent a large contribution to soil C over multiple rotations under coppiced or replanted stands. Otherwise, short-term C losses can be high where stumps and coarse roots are harvested, especially following successive coppice cycles. |
| Asunto: | Matéria orgânica Humus Sequestro de carbono Manejo florestal Eucalipto Biomassa florestal |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Institución: | UFMG |
| Departamento: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Tipo de acceso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1093/forsci/fxab058 |
| URI: | http://hdl.handle.net/1843/61682 |
| Fecha del documento: | abr-2022 |
| metadata.dc.url.externa: | https://academic.oup.com/forestscience/article/68/2/162/6490085 |
| metadata.dc.relation.ispartof: | Forest Science |
| Aparece en las colecciones: | Artigo de Periódico |
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