Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Does tree species composition control soil organic carbon pools in Mediterranean mountain forests?
Year:2011
Research Areas
  • Agriculture
Information
Abstract
We compared soil organic carbon (SOC) stocks and stability under two widely distributed tree species in the Mediterranean region: Scots pine (Pinus sylvestris L.) and Pyrenean oak (Quercus pyrenaica Willd.) at their ecotone. We hypothesised that soils under Scots pine store more SOC and that tree species composition controls the amount and biochemical composition of organic matter inputs, but does not influence physico-chemical stabilization of SOC. At three locations in Central Spain, we assessed SOC stocks in the forest floor and down to 50cm in the mineral in pure and mixed stands of Pyrenean oak and Scots pine, as well as litterfall inputs over approximately 3 years at two sites. The relative SOC stability in the topsoil (0?10 cm) was determined through size-fractionation (53_m) into mineral-associated and particulate organic matter and through KMnO4-reactive C and soil C:N ratio. Scots pine soils stored 95?140Mgha?1 of C (forest floor plus 50cm mineral soil), roughly the double than Pyrenean oak soils (40?80Mgha?1 of C), with stocks closely correlated to litterfall rates. Differences were most pronounced in the forest floor and uppermost 10cm of the mineral soil, but remained evident in the deeper layers. Biochemical indicators of soil organic matter suggested that biochemical recalcitrance of soil organic matter was higher under pine than under oak, contributing as well to a greater SOC storage under pine. Differences in SOC stocks between tree species were mainly due to the particulate organic matter (not associated to mineral particles). Forest conversion from Pyrenean oak to Scots pine may contribute to enhance soil C sequestration, but only in form of mineral-unprotected soil organic matter.
International
Si
JCR
Si
Title
FOREST ECOLOGY AND MANAGEMENT
ISBN
0378-1127
Impact factor JCR
1,992
Impact info
Volume
262
10.1016/j.foreco.2011.02.004
Journal number
10
From page
1985
To page
1904
Month
SIN MES
Ranking
6/53 FORESTRY (SCI)
Participants
  • Autor: Eugenio Díaz-pines López De Los Mozos
  • Autor: Agustin Rubio Sánchez
  • Autor: Helga Van Miegroet
  • Autor: Fernando Montes
  • Autor: Marta Benito Capa (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Calidad de Suelos y Aplicaciones medioambientales
  • Departamento: Edafología
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)