2:15 PM - 2:30 PM
[ACG30-13] Development of Sun-Induced Chlorophyll Fluorescence database based on ecosystem tower measurement
Keywords:Ecosystem Photosynthesis, Remote Sensing, Flux measurement, Satellite measurement
Chlorophyll fluorescence is emitted from chloroplast to release the overflown energy of incident sunlight (so-called as Sun-Induced Fluorescence; SIF). Recently, Several studies proved that SIF could be utilized for photosynthesis estimation at the ecosystem spatial scale (Zarco-Tejada et al., 2013, AFM, etc.) as shown by the strong correlationship between SIF and gross primary production (GPP). On the other hand, the availability of SIF is reduced due to small number of ground-based measurement thought highly evaluated potential of them.
This study compiles the SIF derived at five different ecosystems at tower-based flux stations in Japan: paddy field in Mase, grassland in Tsukuba university, deciduous broad-leaf and evergreen needleleaf forests in Takayama, deciduous needleleaf forest in Fujihokuroku. The SIF is calculated in the O2-A band around the wavelength of 760 nm by Fraunhofer line depth (FLD) method. We will compare the SIF to eddy GPP flux during 2005-2013 and show the preliminary analysis on the availability of the SIF for the estimation of ecosystem photosynthesis.