Inclan（aの頭に´）,R., Uribe,C., Sanchez（aの頭に´）,L., Sanchez（aの頭に´）,D.M., Clavero,A（頭に´）., Fernandez（aの頭に´）,A.M., Morante,R., Blanco,A. and Jandl,R.(2012): N2O and CH4 fluxes in undisturbed and burned holm oak, scots pine and pyrenean oak forests in central Spain. Biogeochemistry, 107, 19-41.

『中央スペインの非攪乱および燃焼したトキワガシとヨーロッパアカマツとピレネー・オーク林におけるN2OとCH4のフラックス』

『Abstract
　We investigated N2O and CH4 fluxes from soils of Quercus ilex, Quercus pyrenaica and Pinus sylvestris stands located in the surrounding area of Madrid (Spain). The fluxes were measured for 18 months from both mature stands and post fire stands using the static chamber technique. Simultaneously with gas fluxes, soil temperature, soil water content, soil C and soil N were measured in the stands. Nitrous oxide fluxes ranged from -11,43 to 8.34μg N2O-N m-2 h-1 in Q. ilex, -7.74 to 13.52μg N2O-N m-2 h-1 in Q. pyrenaica and -28.17 to 21.89μg N2O-N m-2 h-1 in P. sylvestris. Fluxes of CH4 ranged from -8.12 to 4.11μg CH4-C m-2 h-1 in Q. ilex, -7.74 to 3.0μg CH4-C m-2 h-1 in Q. pyrenaica and -24.46 to 6.07μg CH4-C m-2 h-1 in P. sylvestris. Seasonal differences were detected; N2O fluxes being higher in wet months whereas N2O fluxes declined in dry months. net consumption of N2O was related to low N availability, high soil C contents, high soil temperatures and low moisture content. Fire decreased N2O fluxes in spring. N2O emissions were closely correlated with previous day's rainfall and soil moisture. Our ecosystems generally were a sink for methane in the dry season and a source of CH4 during wet months. The available water in the soil influenced the observed seasonal trend. The burned sites showed higher CH4 oxidation rates in Q. ilex, and lower rates in P. sylvestris. Overall, the data suggest that fire alters both N2O and CH4 fluxes. However, the magnitude of such variation depends n the site, soil characteristics and seasonal climatic conditions.

Keywords: Greenhouse flux; Fire; Soil water content; Soil temperature; Quercus pyrenaica; Pinus sylvestris; Quercus ilex』

Information
Materials and methods
　Study sites and experimental design
　N2O and CH4 flux measurements
　Meteorological data
　Soil samples
　Statistical analysis
Results
　Environmental conditions
　Soil parameters
　N2O fluxes
　CH4 fluxes
Discussion
　Nitrous oxide fluxes
　　Seasonal variation
　　Effects of forest type
　　Effects of fire
　Methane fluxes
　　Seasonal variation
　　Effects of forest type
　　Effects of fire
Conclusions
Acknowledgments
References

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