RT Journal Article
T1 Organic matter properties in soils afforested with Pinus radiata
A1 Pérez Cruzado, César
A1 Sande, Benjamín
A1 Omil Ignacio, Beatriz
A1 Rovira, Pere
A1 Martín Pastor, Manuel
A1 Barros Pena, Nieves
A1 Salgado Carballo, Josefa
A1 Merino García, Agustín
K1 SOM
K1 Afforestation
K1 Pastures
K1 13C CP-MAS NMR
K1 DSC
K1 Soil carbon sequestration
AB AimsAfforestation causes important alterations in SOM content and composition that affect the soil functions and C balance. The aim of this study was to identify the mechanisms that determine the changes in SOM composition following afforestation of grasslands.MethodsThe study included 4 chronosequences and 5 paired plots comprising pastures and land afforested with Pinus radiata. The SOM was characterized by 13C CP-MAS NMR spectroscopy and differential scanning calorimetry.ResultsDuring the first 10–20 year after afforestation, the changes in SOM content varied from slight gains to large losses (>40 %). The analyses revealed that even SOM compounds considered resistant to decomposition were degraded during this time. The SOM gains, observed 20 year after stand establishment, were favoured by the higher recalcitrance of pine litter and possibly by soil acidification. The concentrations of most SOM compounds, particularly the stable compounds, were higher at the end of the rotation. The low degree of protection, along with the favourable climatic conditions, may also explain the rapid decomposition of SOM, including resistant compounds, in these soils. DSC analysis complemented the information about SOM composition provided by other techniques.ConclusionsThe accumulation of stable SOM compounds at the end of the rotation suggests a longer soil C turnover in these afforested soils, which may alleviate the gradual loss of SOC in intensively managed forest soils.
PB Springer
YR 2014
FD 2014
LK https://hdl.handle.net/10347/41074
UL https://hdl.handle.net/10347/41074
LA eng
NO Pérez Cruzado, C., Sande, B., Omil Ignacio, B., Rovira, P., Martín Pastor, M., Barros Pena, N., Salgado Carballo, J. & Merino García, A. (2014). Organic matter properties in soils afforested with Pinus radiata. Plant Soil 374, 381–398. https://doi.org/10.1007/s11104-013-1896-5
NO This is the author’s version of the work. The definitive version was published in Plant and soil, vol. 374 (2014), available online at: https://doi.org/10.1007/s11104-013-1896-5
NO Funding for this research was provided by the Spanish Ministry of Science (Project AGL 2009-13400-C05- 04). We thank the Association of Forest Owners of Galicia (AFG) for their support. Soil analyses were carried out by Montse Gómez (RIAIDT-University of Santiago de Compostela).
DS Minerva
RD 23 abr 2026