2012年9月5日 Comparisons of CH4 fluxes observed with multiple techniques over an Alaskan black spruce forest underlain by permafrost FLUXNET CH4 and N2O workshop Hiroki Iwata, Ayaka Sakabe, Yoshinobu Harazono, Yoshiko Kosugi, Masahito Ueyama, Kenshi Takahashi, Naoki Makita, Hirohiko Nagano