著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) 石塚 成宏,Comparison of soils surface N20 flux from tree plantations with different species and ages-From the observation in dry season on Sumatra-,Proceedings of annual conference of Japan Forest Science Society vol.118,,,2007,,,,https://cir.nii.ac.jp/crid/1010282256778937374,