Methane fluxes at upland forests in Japan based on the micrometeorological and chamber methods

Masahito Ueyama1, Kota Yoshikawa1, Yoshiyuki Takahashi2, Kentaro Takagi3 and Yuji Kominami4, (1)Osaka Prefecture University, Sakai, Japan, (2)National Institute for Environmental Studies, Tsukuba, Japan, (3)Hokkaido University, Sapporo, Japan, (4)Forestry Res. Institute, Kyoto, Japan