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Memorias de investigación
Artículos en revistas:
Soil organic matter dynamics after afforestation of mountain grasslands in both a Mediterranean and a temperate climate
Año:2016
Áreas de investigación
  • Ciencia del suelo,
  • Bosque mediterráneo
Datos
Descripción
We studied the effect ofmountain grassland afforestation with conifer trees (Pinus sylvestris, Picea abies and Pinus cembra) on soil organic matter (SOM) cycling and carbon (C) isotopic composition in two contrasting climate areas using a regional approach. Seventeen paired sites (each containing at least 40 years prior afforested and grassland plots) were investigated in themountains of Central Spain and Western Austria. Topsoil CO2 effluxes were monitored under standard- ized conditions for sixmonths as a proxy for soil organic carbon (SOC) mineralisation. The bulk C and nitrogen (N) concentrations and their isotopic composition in the soil and in the plants were assessed. The soil C:N ratio was consistently greater after afforestation in both regions, which in Spain was caused by a significant decrease in N concentration. No consistent effect was found on mineralisation rates due to vegetation change. Afforestation produced a more consistent soil 13C enrichment in the Spanish than in the Austrian sites. Our work strongly suggests that increasing altitude in Mediterranean mountain grasslands alleviates water limitation, favouring both plant growth and SOM decomposition, and ultimately accelerating C cycling. In contrast, temperate grassland areas at high altitudes were associated with severe temperature limitations, which constrained SOM transformation processes. In spite of the impact of afforestation on soil biogeochem- ical processes, C concentrations were marginally affected. We therefore conclude that grassland conver- sion to coniferous forests does not enhanced C seques- trationin themineral soil, for at least 40 years after land- use change.
Internacional
Si
JCR del ISI
Si
Título de la revista
Biogeochemistry
ISSN
0168-2563
Factor de impacto JCR
3,407
Información de impacto
Datos JCR del año 2015
Volumen
131
DOI
10.1007/s10533-016-0278-5
Número de revista
Desde la página
267
Hasta la página
280
Mes
SIN MES
Ranking
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Participantes
  • Autor: Carlos Ortiz Oñate (UPM)
  • Autor: Eduardo Vazquez Garcia (UPM)
  • Autor: Agustin Rubio Sanchez (UPM)
  • Autor: Marta Benito Capa (UPM)
  • Autor: Andreas Schindlbacher (Research and Training Centre for Forests, Natural Hazards and Landscape - BFW)
  • Autor: Robert Jandl (Research and Training Centre for Forests, Natural Hazards and Landscape - BFW)
  • Autor: Klaus Butterbach-Bahl (Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology)
  • Autor: Eugenio Díaz-Pinés López de los Mozos (Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Sistemas y Recursos Naturales
  • Departamento: Producción Agraria
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