岡田 直紀

分野紹介

生態系生産動態論

役職

准教授

連絡先

E-mail: okad*kais.kyoto-u.ac.jp (replace * with @)

経歴

1981年 京都大学農学部卒
1983年 京都大学大学院農学研究科修士課程修了
1989年 京都大学大学院農学研究科博士後期課程 研究指導認定
1990年 国際協力事業団パプアニューギニア森林研究計画派遣専門家
1992年 林野庁森林総合研究所主任研究官
2001年 京都大学大学院農学研究科助教授
2004年 京都大学大学院農学研究科准教授
2012年 京都大学大学院地球環境学堂准教授(大学院農学研究科准教授両任)

所属学会

日本生態学会,日本熱帯生態学会,日本森林学会,日本木材学会,International Association of Wood Anatomists

主要著書

・Ohashi, S., N. Okada, A. Tanaka, W. Nakai, S. Takano (2014): Radial and vertical distributions of radiocesium in tree stems of Pinus densiflora and Quercus serrata 1.5 y after the Fukushima nuclear disaster. Journal of Environmental Radioactivity, 134, 54-60.
・Amir Affan Abdul Azim, N. Okada (2014): Occurrence and anatomical features of growth rings in tropical rainforest trees in Peninsular Malaysia: a preliminary study.TROPICS, 23(1):15-31.
・Ohashi, S., N. Okada, Amir Affan Abdul Azim, S. Siripatanadilok, T. Veenin, Ahmad Zuhaidi Yahya, T. Nobuchi (2014): Vessel feature changes as a tool for detecting annual rings in tropical trees.Trees – Structure and Function -, 28:137–149.
・Takahashi, S., N. Okada, and T. Nobuchi (2013): Relationship between the timing of vessel formation and leaf phenology in ten ring-porous and diffuse-porous deciduous tree species. Ecological Research 28(4): 615-624.
・Ohashi, S., N. Okada, (2012): Seasonal variations in the vessel size of temperate, diffuse-porous species and its relationship to leaf water potential.Forest Research, 78, 89-95
・Karube J., N. Okada, and I. Tayasu (2012): Sulfur stable isotope signature identifies the source of reduced sulfur in benthic communities in macrophyte zones of Lake Biwa, Japan. Limnology, 13, 269-280.
・Okada N., Y. Hirakawa and Y. Katayama (2012): Movement of sapwood-injected rubidium into heartwood of Japanese cedar (Cryptomeria japonica) in the growing period. Journal of Wood Science, 58, 1- 8.
・Okada N., Y. Hirakawa and Y. Katayama (2011): Application of activable tracers to investigate radial movement of minerals in the stem of Japanese cedar (Cryptomeria japonica). Journal of Wood Science, 57, 421- 428.
・Ohashi, S., N. Okada, Amir Affan Abdul Azim, Ahmad Zuhaidi Yahya and Tadashi Nobuchi (2011): Estimation of tree age in the humid tropics by vessel measurement: A preliminary study.TROPICS, 19, 107-112.
・岡田直紀 (2010):安定同位体測定法.「森林立地調査法(改訂版)」,(森林立地調査法編集委員会 編), 77-79, 博友社(分担執筆).
・Eguchi, S., N. Okada, S. Siripatanadilok, and T. Veenin (2009): Opal phytolith fossils in the soil of tropical seasonal forest in Sakaerat, northeast Thailand. In: Tropical Forestry Change in a Changing World, 17-20, November 2008, Bangkok, vol. 5: Dry Forest Ecology and Conservation, 149-156.
・Ohashi, S., N. Okada, T. Nobuchi, S. Siripatanadilok, and T. Veenin (2009): Detecting tree rings of Leguminosae in tropical seasonal forests by wood anatomy. In: Tropical Forestry Change in a Changing World, 17-20, November 2008, Bangkok, vol. 2: Tropical Forests and Climate Change, 1-13.
・Ohashi, S., N. Okada, T. Nobuchi, S. Siripatanadilok, and T. Veenin (2009): Detecting invisible growth rings of trees inseasonally dry forests in Thailand: isotopic and wood anatomical approaches.Trees – Structure and Function -, 23, 813-822.