Gas Exchange Studies at Pasoh
by Kyoto Univ./FFPRI/FRIM team in NIES/FRIM/UPM joint research
JAPANESE

At 52m Flux Tower

Flux and micrometeorological Monitoring (2002-now)

Canopy CO2/H2O/Heat fluxes@(open-path Eddy Covariance)
Micrometeorology

radiations, CO2, wind, temperature, humidity
(tower top, profile, and forest floor)
rainfall, soil moisture

¡ DATABASE
¡ 7-year variation of CO2/H2O fluxes (Kosugi et al in press)
¡ CO2 exchange (03-05) (Kosugi et al 2008)
¡ Evapotranspiration (03-05) (Takanashi et al 2010)
¡ Storage fluxes (03-05) (Ohkubo et al 2008)
¡ Comparison over AsiaFlux sites (Saigusa et al 2008, Hirata et al 2008)
¡ Short report of 2003 flux results (Takanashi et al 2005)
¡ Methyl chloride and isoprene flux (Saito et al 2008)
¡ Bowen ratio H2O flux (Tani et al 2003, Roberts et al 2005)
¡ Rainfall pattern (Noguchi et al 2003)
¡ Pioneer EC CO2 flux for several days (Ohtani et al 1997, Yasuda et al 2003)

Vegetation Index Monitoring (2009-now)

up- down- spectrometers
phenology cameras

¡PRI comparison across sites (Nakaji et al)


 

At Aluminum Canopy Walkway

Leaf Scale Gas Exchange

¡Patchy stomatal closure and its effect on leaf photosynthesis (Takanashi et al 2006, Kosugi et al 2009, Kamakura et al 2011)
¡Impact of patchy stomatal closure to canopy photosynthesis (Kamakura et al)
¡CH4 fluxes from leaves (Kamakura et al in press)
¡BVOC fluxes from leaves (Okumura et al)
¡Water use (Fukui et al)

¡Vertical distribution of leaf gas exchange properties (Kosugi et al)
¡Multi-layer Model Analysis (Takanashi et al)

 

At Plot 1/6ha-Plot

Spatial and temporal variabilities of

¡Thoughfall (Konishi et al 2006)
¡CO2 flux from soil (~) (Kosugi et al 2007)
¡CO2/CH4/N2O fluxes from sol (~) (Itoh et al)
¡Soil water content and soil physics (Noguchi et al)

 

At Station Plot

¡Rainfall monitoring (1995-now)

Intensive observation campaign of Ecological Respirations, root biomass, and soil properties (2010.2)

¡Coarse & fine root respiration (Makita et al)
¡Partitioning of autotrophic respirations (Dannoura et al)
¡Vertical distribution of leaf respiration, ETR, and LMA (Takanashi et al)
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¡Root distribution (Niiyama et al, Yamashita et al)
¡Soil physics distribution (Noguchi et al)

¡Depth of water uptake using 13C and 18O (Haruta et al)
¡CWD decomposition and CO2 emission (Majima et al)
¡CWD monitoring with auto camera (Nakaji et al)


 
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