[TMK]
Tomakomai Flux Research Site
  • Site Description
  • Observation
  • Researchers
  • Note

    • Calibration Information

    Open-path analyzers were calibrated approximately every two months with standard CO2 gases and a dew point generator (LI610, LI-COR).

    The gain of CO2 of the closed-path analyzers was checked once a day by flowing two standard CO2 gases of 320 ppmv and 420 ppmv that were automatically controlled using a CR23X (Campbell).

    Publication

    2008

    Flux/Synthesis analysis
    Hirata, R., Saigusa, N., Yamamoto, S., Ohtani, Y., Ide, R., Asanuma, J., Gamo, M., Hirano, T., Kondo, H., Kosugi, Y., Li, S-G., Nakai, Y., Takagi, K., Tani, M., Wang, H. 2008 Spatial distribution of carbon balance in forest ecosystems across East Asia, Agricultural and Forest Meteorology, doi:10.1016/j.agrformet.2007.11.016

    Saigusa, N., Yamamoto, S., Hirata, R., Ohtani, Y., Ide, R., Asanuma, J., Gamo, M., Hirano, T., Kondo, H., Kosugi, Y., Li, S-G., Nakai, Y., Takagi, K., Tani, M., Wang, H. 2008, Temporal and spatial variations in the seasonal patterns of CO2 flux in boreal, temperate, and tropical forests in East Asia, Agricultural and Forest Meteorology, doi:10.1016/j.agrformet.2007.12.006

    Soil respiration/Isotope
    Takahashi, Y., Liang, N. 2008. Development of chamber-based sampling technique for determination of carbon stable isotope ratio of soil respired CO2 and evaluation of influence of CO2 enrichment in chamber headspace, Geochemical Journal. (accepted)

    Takahashi, Y., Liang, N., Hirata, R., Machida, T., Fujinuma, Y. 2008. Variability in carbon stable isotope ratio of heterotrophic respiration in a deciduous needle-leaf forest, Journal of Geophysical Research- Biogeosciences. (accepted)

    Proximal Remote Sensing
    Nakaji, T., Ide, R., Takagi, K., Kosugi, Y., Ohkubo, S., Nishida, K., Saigusa, N., Oguma, H. 2008. Utility of spectral vegetation indices for estimation of light conversion efficiency in coniferous forests in Japan. Agricultural and Forest Meteorology, doi:10.1016/j.agrformet.2007.11.006

    Takeda, T., Oguma, H., Sano, T., Yone, Y., Fujinuma, Y. 2008. Estimating the plant area density of a Japanese larch (Larix kaempferi Sarg.) plantation using a ground-based laser scanner, Agricultural and Forest Meteorology, doi:10.1016/j.agrformet.2007.10.004

    2007

    Flux
    Hirata, R., Hirano, T., Saigusa, N., Fujinuma, Y., Inukai, K., Kitamori, Y., Yamamoto, S. 2007. Seasonal and interannual variations in carbon dioxide exchange of a temperate larch forest, Agricultural and Forest Meteorology, 147: 110-124.

    Kobayashi, N., Hiyama, T., Fukushima, Y., Lopez, M.L., Fujinuma, Y. 2007. Nighttime transpiration observed over a larch forest in Hokkaido, Japan, Water Resources Research, 43: W03407, doi:10.1029/2006WR005556.

    Ono, K., Hirata, R., Mano, M., Miyata, A., Saigusa, N., Inoue, Y. 2007. Systematic differences in CO2 fluxes measured by open- and closed-path eddy covariance systems: Influence of air density fluctuations resulting from temperature and water vapor transfer, Journal of Agricultural Meteorology, 63: 139-155. (in Japanese with English summary)

    Proximal Remote Sensing
    Nakaji, T., Ide, R., Oguma, H., Saigusa, N., Fujinuma, Y. 2007. Utility of spectral vegetation index for estimation of gross CO2 flux under varied sky conditions, Remote Sensing of Environment, 109:274-284.

    2006

    Trace gas
    Ieda, T., Kitamori, Y., Mochida, M., Hirata, R., Hirano, T., Inukai, K., Fujinuma, Y., Kawamura, K. 2006. Diurnal variations and vertical gradients of biogenic volatile and semi-volatile organic compounds at the Tomakomai larch forest station in Japan, Tellus, 58B: 177-186.

    Flux/Modeling
    Kishihara, Y., Ueyama, M., Hamotani, K., Monji, N. 2006. Vertical distribution of CO2 flux within and above a larch forest -Experimental and numerical approach-, Journal of Agricultural Meteorology, 62: 9-14.

    Flux/Modeling/Gap filling
    Ooba, M., Hirano, T., Mogami, J., Hirata, R., Fujinuma, Y. 2006. Comparisons of gap-filling methods for carbon flux data set: a combination of a genetic algorithm and an artificial neural network, Ecological Modeling, 198:473-486.

    Proximal Remote Sensing
    Nakaji, T., Oguma, H., Fujinuma, Y. 2006. Seasonal changes in the relationship between photochemical reflectance index and photosynthetic light use efficiency of Japanese larch needles, International Journal of Remote Sensing, 27:493-509.

    2005

    Flux
    Hirata, R., Hirano, T., Mogami, J., Fujinuma, Y., Inukai, K., Saigusa, N., Yamamoto, S. 2005. CO2 flux measured by an open-path system over a larch forest during snow-covered season. Phyton-Annales Rei Botanicae, 45: 347-351.

    Hirata, R., Hirano, T., Okada, K., Fujinuma, Y. Inukai, K., Saigusa, N., Yamamoto, S. 2005. Effects of wind speed and direction on eddy fluxes over a larch plantation, Journal of Agricultural Meteorology, 60, 741-744.

    Wang, H., Saigusa, H., Zu, Y., Yamamoto, S., Kondo, H., Yang, F., Wang, W., Hirano, T., Fujinuma, Y. 2005. Response of CO2 flux to environmental variables in two larch forest ecosystems in East Asia. Phyton-Annales Rei Botanicae, 45: 339-346.

    Photosynthesis
    Liang, N., Fujinuma, Y., Inoue, G. 2005. Photosynthesis and respiration of Japanese larch -continuous measured with a multichannel automated chamber system-. Journal of Agricultural Meteorology 60: 797-800

    Wood respiration
    Liang, N., Fujinuma, Y., Inoue, G. 2005. Measurement of wood CO2 efflux using a multichannel automated chamber system. Phyton-Annales Rei Botanicae, 45: 109-115.

    Leaf litter decomposition
    Kim, H., Hirano, T., Koike, T., Urano, S. 2005. Contribution of litter CO2 production to total soil respiration in two different deciduous forests. Phyton-Annales Rei Botanicae, 45: 385-388.

    Kim, H., Hirano, T., Urano, S. 2005. Seasonal variation in CO2 production of leaf litter from different deciduous forests at the early decomposition stage, Journal of Agricultural Meteorology, 61: 95-104.

    Proximal Remote Sensing
    Takeda, T., Oguma, H., Yone, Y. 2005. Comparison of leaf area density measured by laser range finder and stratified clipping method, Phyton-Annales Rei Botanicae, 45: 505-510.

    Yone, Y., Oguma, H., Yamagata, Y., Fujinuma, Y. 2005. Development of measurement system for evaluating forest ecosystems: Measurement method of aboveground biomass growth by using air borne laser survey, Phyton-Annales Rei Botanicae, 45: 517-524.

    Meteorology
    Mogami, J., Hirano, T., Hirata, R., Kitaoka, S., Koike, T., Fujinuma, Y. 2005. Variation in Photosynthetic Photon Flux Density on a Larch Forest, Journal of Agricultural and Forest Meteorology, 60: 1161-1163.

    2004

    Flux
    Wang, H., Saigusa, N., Yamamoto, S., Kondo, H., Hirano, T., Toriyama, A., Fujinuma, F. 2004. Net ecosystem CO2 exchange over a larch forest in Hokkaido, Japan. Atmospheric Environment, 38: 7021-7032.

    Soil respiration
    Liang, N., Nakadai, T., Hirano, T., Qu, L., Koike, T., Fujinuma, Y., Inoue, G. 2004. In situ comparison of four approaches to estimating soil CO2 efflux in a northern larch (Larix kaempferi Sarg.). Agricultural and Forest Metrology, 123: 97-117.

    2003

    Flux
    Hirano, T., Hirata, R., Fujinuma, Y., Saigusa, N., Yamamoto, S., Harazono, Y., Takada, M., Inukai, K, Inoue, G. 2003. CO2 and water vapor exchange of a larch forest in northern Japan. Tellus. 55B: 244-257.

    Miura, M., Hirano, T., Hirata, R., Mogami, J., Inukai, K., Fujinuma. 2003. Effect of heat strage flux on energy balance in a Larch Forest. Journal of Agricultural Meteorology, 59: 245-250. (in Japanese with English summary)

    2002

    Flux
    Nakai, Y., Saigusa, N., Hirano, T., Evans, R., Ohtani, Y., Hirata, R., Toriyama, A., Kitamura, K., Suzuki, S., Yamamoto, S. 2002. A field experiment in August 2002 for the comparison of eddy-flux systems between AsiaFlux and AmeriFlux. Journal of Japan Society Hydrology & Water Resources. 15, 665-672. (in Japanese) (Technical report)

    Proximal Remote Sensing
    Oguma, H., Tsuchida, S., Fujinuma, Y. 2002. The development of a hyper-spectral camera system for the forest monitoring, Journal of the.Remote Sensing Society of Japan, 22(5): 588-597 (in Japanese)

    Omasa, K., Urano, Y., Oguma, H., Fujinuma, Y. 2002. Mapping of tree position of Larix leptolepis woods and estimation of diameter at breast height(DBH) and biomass of the trees using range data measured by a portable scanning lidar, Journal of the.Remote Sensing Society of Japan., 22(5): 550-557. (in Japanese)

    Yone, Y., Oguma, H., Yamagata, Y. 2002. Development of measurement system for the carbon sinks under the Kyoto Protocol -Measurement of stem volume and carbon weight of Larix leptolepis stand by airborne lidar-, Journal of the.Remote Sensing Society of Japan, 22(5): 531-543. (in Japanese)

    AsiaFlux Newsletter Articles

    [No.1]
    Japanese-American international comparison measurements, August 2001
    [No.2]
    Results of Japan-U.S. Inter-Comparison Measurements
    [No.6]
    Tomakomai Flux Research Site
    [No.7]
    Carbon Balance Researches in a Northern Larch Forest: Measurements of Component CO2 Fluxes Using Multichannel Automated Chamber Approaches
    [No.11]
    Two AsiaFlux sites damaged by Typhoon SONGDA (Flash Report) by Y. OHTANI et al.
    [No.15]
    Development of Measurement System to Evaluate Forest Ecosystems: Measurement of Biomass Growth by Airborne Laser Survey by Y. YONE et al.
    [No.20]
    Validation of Terrestrial Carbon Cycle Model with AsiaFlux Data by A. Ito

    Infrastructure

    Tower, Electrical power(AC), Facilities for communication(none), Accommodation (none)