Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
El "trenching" como método de separación de las componentes de la respiración de suelos forestales
Year:2008
Research Areas
  • Agriculture
Information
Abstract
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.
International
Si
JCR
Si
Title
EUROPEAN JOURNAL OF FOREST RESEARCH
ISBN
1612-4669
Impact factor JCR
1,23
Impact info
Volume
10.1007/s10342-008-0250-6
Journal number
25
From page
161
To page
166
Month
MARZO
Ranking
Participants
  • Participante: A. SCHINDLBACHER
  • Participante: I. DIAZ-PINÉS
  • Autor: Agustin Rubio Sanchez (UPM)
  • Participante: R. JANDL
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ecología y Paisaje
  • Departamento: Silvopascicultura
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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