Memorias de investigación
Artículos en revistas:
El "trenching" como método de separación de las componentes de la respiración de suelos forestales
Año:2008
Áreas de investigación
  • Agricultura
Datos
Descripción
We conducted a trenching experiment in a mountain forest in order to assess the contribution of the autotrophic respiration to total soil respiration and evaluate trenching as a technique to achieve it. We hypothesised that the trenching experiment would alter both microbial biomass and microbial community structure and that Wne roots (less than 2 mm diameter) would be decomposed within one growing season. Soil CO2 eZux was measured roughly biweekly over two growing seasons. Root presence and morphology parameters, as well as the soil microbial community were measured prior to trenching, 5 and 15 months after trenching. The trenched plots emitted about 20 and 30% less CO2 than the control plots in the Wrst and second growing season, respectively. Roots died in trenched plots, but root decay was slow. After 5 and 15 months, Wne root biomass was decreased by 9% (not statistically diferent)and 30%, (statistically diVerent) respectively. When we corrected for the additional trenched-plot CO2 eZux due to Wne root decomposition, the autotrophic soil respiration rose to »26% of the total soil respiration for the Wrst growing season, and to »44% for the second growing season. Soil microbial biomass and community structure was not altered by the end of the second growing season. We conclude that trenching can give accurate estimates of the autotrophic and heterotrophic components of soil respiration, if methodological side eVects are accounted for, only.
Internacional
Si
JCR del ISI
Si
Título de la revista
EUROPEAN JOURNAL OF FOREST RESEARCH
ISSN
1612-4669
Factor de impacto JCR
1,23
Información de impacto
Volumen
DOI
10.1007/s10342-008-0250-6
Número de revista
25
Desde la página
161
Hasta la página
166
Mes
MARZO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Participante: A. SCHINDLBACHER
  • Participante: I. DIAZ-PINÉS
  • Autor: Agustin Rubio Sanchez UPM
  • Participante: R. JANDL
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ecología y Paisaje
  • Departamento: Silvopascicultura