[ACG47-01] Relative contributions of different methane emission categories in the continental East Asia inferred from stable carbon isotope measurements at Hateruma Station ★Invited Papers *梅澤 拓1、斉藤 拓也1、遠嶋 康徳1、寺尾 有希夫1、伊藤 昭彦1 (1.国立環境研究所)