OWARI Toshiaki

J-GLOBAL         Last updated: Mar 18, 2019 at 15:49
OWARI Toshiaki
The University of Tokyo
The University of Tokyo Forests, Graduate School of Agricultural and Life Sciences
Job title
Associate Professor
Ph. D. in Agriculture(The University of Tokyo), MSc in Agriculture and Forestry(University of Helsinki)


Dr. Toshiaki Owari earned his PhD in forest science at the University of Tokyo in 2000. He was Instructor of forest management and engineering at Hokkaido University between 1997–2006. During 2003–2005, he was at the University of Helsinki, Finland, to study forest products marketing and forest certification. He was Lecturer between 2006-2012 and has been Associate Professor since September 2012 at the University of Tokyo. He is also Assistant Director at the University of Tokyo Chiba Forest and Deputy Coorinator of IUFRO Research Group 5.10.00 (Forest products marketing and business management) and Working Party 1.01.09 (Ecology and silviculture of fir).

Research Areas


Academic & Professional Experience

Sep 2012
Associate Professor, Graduate School of Agricultural and Life Sciences, The University of Tokyo
Sep 2018
Oct 2018
Visiting Associate Professor, Department of Development and Sustainability, School of Environment, Resources & Development, Asian Institute of Technology
Apr 2012
Mar 2013
Visiting Associate Professor, Risk Analysis Research Center, The Institute of Statistical Mathematics
Jun 2006
Aug 2012
Lecturer, The University of Tokyo, Graduate School of Agricultural and Life Sciences
Apr 2006
May 2006
Instructor, Research Faculty of Agriculture, Hokkaido University
Apr 1999
Mar 2006
Instructor, Graduate School of Agriculture, Hokkaido University
Jan 1997
Mar 1999
Instructor, Faculty of Agriculture, Hokkaido University


Apr 1989
Mar 1993
Department of Forestry, Bachelor, Faculty of Agriculture, Hokkaido University
Apr 1993
Mar 1995
Division of Forestry, Master course, Graduate School of Agriculture, Hokkaido University
Apr 1995
Dec 1996
Division of Forest Science, Doctor course, Graduate School of Agricultural and Life Sciences, The University of Tokyo
Sep 2000
PhD. in Agriculture, The University of Tokyo
Jan 2003
Dec 2007
Forest Products Marketing, MSc., Faculty of Agriculture and Forestry, University of Helsinki

Committee Memberships

Apr 2017
Japan Society of Forest Planning  Planning Committee
Feb 2017
Forestry: An International Journal of Forest Research  Guest Editor, 'Abies' Special Issue
Oct 2014
International Union of Forest Research Organizations (IUFRO)  Deputy Coordinator (Working Party 1.01.09: Ecology and silviculture of fir)
Oct 2013
Open Journal of Ecology  Editorial Board
Aug 2012
Journal of Tropical Forestry and Environment  Editorial Board

Published Papers

Morimoto, J., Umebayashi, T., Suzuki, S.N., Owari, T., Nishimura, N., Ishibashi, S., Shibuya, M., Hara, T.
Landscape and Ecological Engineering   in press   Feb 2019   [Refereed]
Many reports on the effects of conventional salvage logging—the removal of fallen and damaged trees after a catastrophic windthrow—on subsequent forest restoration have focused on short-term results occurring over less than 20 years; however, this...
Jayathunga, S., Owari, T., Tsuyuki, S.
Remote Sensing   11(3) 338   Feb 2019   [Refereed]
Scientifically robust yet economical and efficient methods are required to gather information about larger areas of uneven-aged forest resources, particularly at the landscape level, to reduce deforestation and forest degradation and to support th...
Journal of the Japanese Forest Society   100(6) 208-217   Dec 2018   [Refereed]
This study aims at achieving the automatic extraction of attributes for influencing tree-marking decisions and decision rules, and constructing classification models for marked trees by employing machine-learning algorithms. A tree-marking exercis...
Jayathunga, S., Owari, T., Tsuyuki, S.
International Journal of Applied Earth Observations and Geoinformation   73 767-777   Dec 2018   [Refereed]
Remote sensing (RS) data are often used as a complementary data source to acquire accurate quantitative estimations of merchantable volume (V) and carbon stock in living biomass (CST), which are critical for the sustainable use of forest resources...
Minowa, Y., Owari, T., Nakajima, T., Inukai, H.
Journal of the Japanese Forest Society   100(2) 37-46   Jun 2018   [Refereed]
Tree marking for harvesting is one of the crucial techniques for natural forest management under the selection system. In this study, we examined the visual stem indicators that affect tree-marking decisions, and the effects of tree markersʼ exper...

Books etc

Tachibana, S., Kuboyama, H., Inoue, M., Higashihara, T. (eds.) (Part:Contributor)
Kaiseisha Press   Oct 2014   ISBN:4860993020
Kraxner, F., Fernholz, K., Owari, T. (Part:Contributor, Certified forest products markets, 2010-2011)
United Nations   Dec 2011   ISBN:9211170508
Toshiaki Owari
LAP LAMBERT Academic Publishing   Oct 2011   ISBN:3846525731
Kraxner, F., Mater, C., Owari, T. (Part:Contributor, Green building drives construction market and forest certification: Certified forest products markets, 2007-2008)
United Nations   Nov 2008   ISBN:9211169909
Kraxner, F., Mater, C., Owari, T. (Part:Contributor, Biomass for energy and plantations – new certification driver: Certified forest products markets, 2006-2007)
United Nations   May 2007   ISBN:9211169712


The University of Tokyo Forests and forest science education in Japan
Owari, T., Yasumura, N., Ishibashi, S., Kamoda, S., Saito, H.
Proceedings of the SILVA Network Conference 2017   SILVA Network Publication 15 in press   2018   [Refereed]
In-forest teaching is a vital element of forest science education at university level, and university forests play a critical role in this. In Japan, the University of Tokyo (UTokyo) owns the oldest university forest, which was established in 1894...
Tree marking techniques in the stand-based forest management system: Work behavior of tree markers under selection system
Owari, T., Matsui, M., Eguchi, Y., Nobu, E., Kobayashi, T., Minowa, Y.
Boreal Forest Research   66 79-82   Feb 2018
A trial of forest stand assessment using low-cost fixed-wing unmanned aerial vehicle (UAV)
Inukai, H., Tokuni, M., Nakagawa, Y., Furuya, N., Jayathunga, S., Owari, T.
Boreal Forest Research   66 93-96   Feb 2018
Owari, T.
IUFRO News   45(12) 3   Dec 2016   [Invited]
Owari, T.
IUFRO-J NEWS   (119) 11-15   Dec 2016   [Invited]

Conference Activities & Talks

Quantifying individual tree parameters of large-sized high-value trees using unmanned aerial vehicle (UAV)
Kyaw Thu Moe, Owari, T., Jayathunga, S., Furuya, N., Hiroshima, T.
130th Annual Meeting of the Japanese Forest Society   21 Mar 2019   The Japanese Forest Society
Single-tree selection cutting is a common silvicultural practice for managing mixed conifer-braodleaf forests in Hokkaido, Northern Japan. To select candidate trees with a large size and high value from vast area of mixed forests is a challenging ...
Owari, T., Jayathunga, S., Kyaw Thu Moe, Hirata, Y., Suzuki, S. N., Morimoto, J.
XI International Workshop on Uneven-aged Silviculture   12 Nov 2018   Universidad Austral de Chile
Forest structure is dynamic in nature, and it spatially and temporally changes according to a wide range of disturbances. Typhoons often strike Japan, and it can have a great impact on forests. Global warming may increase the frequency, intensity,...
Owari, T.
The 8th Symposium of Asian University Forest Consortium   23 Oct 2018   Seoul National University
In East Asia including South Korea, Taiwan, and Japan, Cryptomeria japonica D. Don (‘sugi’ in Japanese) is one of the important plantation tree species. Seoul National University (SNU), National Taiwan University (NTU), and the University of Tokyo...
Owari, T., Ishibashi, S., Hiroshima, T., Toyama, K., Nakajima, T., Guan, B.T., Park, P.S.
NTU – UTokyo Joint Workshop on Long-term Monitoring and Data Analysis for Ecosystem Services in Asian University Forests   25 Jun 2018   National Taiwan University
Cryptomeria japonica D. Don (‘sugi’ in Japanese) is one of the important plantation tree species in East Asia including Taiwan, South Korea, and Japan. National Taiwan University (NTU), Seoul National University (SNU), and the University of Tokyo ...
Nakamura, K., Owari, T., Sakaue, D., Toyama, K.
Japan Geoscience Union Meeting 2018   24 May 2018   Japan Geoscience Union
Natural forest management depends heavily on expert knowledge gained through long-term experiences. In this study, we aimed at developing and applying a knowledge-based application system for natural forest management at the University of Tokyo Ho...

Teaching Experience


Research Grants & Projects

The Japan Society for the Promotion of Scinence: Grants-in-Aid for Scientific Research (C)
Project Year: Apr 2018 - Mar 2021    Investigator(s): Owari, T.
The Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research (A)
Project Year: Apr 2017 - Mar 2021    Investigator(s): Morimoto, J.
The Japan Society for the Promotion of Science: Core-to-Core Program (B. Asia-Africa Science Platforms)
Project Year: Apr 2016 - Mar 2019    Investigator(s): Kamata, N.
The Japan Society for the Promotion of Science: Grant-in-Aid for Scientific Research (B)
Project Year: Apr 2016 - Mar 2019    Investigator(s): Hirata, Y.
The Japan Society for the Promotion of Science: Grant-in-Aid for Challenging Exploratory Research
Project Year: Apr 2015 - Mar 2018    Investigator(s): Owari, Toshiaki