Abstract
The objective of this study was to evaluate the soil organic carbon stock and litter mass in silvopastoral systems (SSP) implemented with Urochloa decumbens and different Eucalyptus spatial arrangements. The SSP was implemented in 2008 with the spatial arrangements of (3 × 2) + 20 m (434 trees ha−1), (2 × 2) + 9 m (909 trees ha−1) and 9 × 2 m (556 trees ha−1) formed by the Eucalyptus cultivars GG100, I144 and VM 58. Soil samples at 0 to 20 and 0 to 40 cm depths were collected in SSP in 2011 and 2015 to determine soil organic carbon stock. The soil organic carbon stock was 38.5% higher in 2015 compared to 2011 (111 vs. 80.7 Mg ha−1), which represented an annual sink of 6.22 Mg ha−1 and indicates an increase in carbon stock over years. Litter mass was greater under the canopy than between trees, probably due to the greater drop in biomass in this location. The silvopastoral systems showed similar volumes of litter and soil organic carbon, which indicates that the evaluated arrangements have similar capacities to store carbon.
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Acknowledgements
The authors would like to thank to the Coordination for the Improvement of Higher Education Personnel (CAPES) for conceding the scholarship; the Veterinary School of UFMG, the Minas Gerais State Research Support Foundation (FAPEMIG), the National Council for Scientific and Technological Development (CNPQ) and the Experimental field Santa Rita for the infrastructure and support in conducting the experiment.
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Oliveira AF = data analysis and writing Santos CA = data collection Gonçalves LC = review Viana MCM = data collection and conceptualization Gontijo Neto MM = data collection and conceptualization Silva EA = data collection and conceptualization Lana AMQ = conceptualization and review
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de Oliveira, A.F., dos Santos, C.A., Gonçalves, L.C. et al. Soil organic carbon stock and litter mass in silvopastoral systems with Eucalyptus. Agroforest Syst (2024). https://doi.org/10.1007/s10457-024-00960-5
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DOI: https://doi.org/10.1007/s10457-024-00960-5