Senior Researcher of IGES-JISE
Doctor of Environment Science

Dr. Tomoki Yagasaki is working for IGES-JISE and promoting hands-on activities for reforestation and nature restoration mainly in Japan and some Asian countries by vegetation ecological approach to clarify floristic composition and structure of forests, growth conditions of planted trees and raised seedlings, and technical support for school children to learning biodiversity in educational institution. In addition, he is working together with IGES Natural Resources and Ecosystem Services team (NRE) and participating in joint research led by the IGES-NRE in collaboration with their research partners in Kenya. He is also deepening mutual cooperation with the IGES-NRE’s researchers, and promoting joint research on restoration of degraded forests in Southeast Asia, aiming at regeneration of native / secondary forests in Lao PDR. Furthermore, He is also working for the projects aiming at rehabilitation of degraded mining areas in the Philippines in collaboration with non-profit organizations in Japan and the Philippines.


Apr. 1993 – Mar. 1997Department of Life and Earth Science, Faculty of Education,
Yokohama National University, Japan
Apr. 2001 – Mar. 2007Master’s and Doctoral Programs, Department of Environment and Technology Management, Graduate School of Environment and Information Sciences, Yokohama National University, Japan

Work Experience

May 1998—Mar. 2007Researcher, JISE
Apr. 2007—Jun. 2017Researcher, IGES-JISE
Apr. 2016—PresentLecturer (part-time), Tsuda University
Jul. 2017—PresentSenior Researcher, IGES-JISE
Aug. 2017—PresentLecturer (part-time), Tamagawa University
Jul. 2019—PresentSenior Researcher, IGES-JISE / -NRE

Research Topics & Areas of Expertise

  • Forest management
  • Nature restoration
  • Evaluation of ecosystem services
  • Environmental education


(1)Yagasaki, T. and Y. Mochida. 1997. Floristic diversity of plant communities on boulders in Oirase gorge, northern Honshu, Japan. Ecological Review, 23(4): 283-293. (in English)
(2)Yagasaki, T. 1998. Morphological characteristics of Sasamorpha borealis populations with their degeneration and regeneration. Eco-habitat, 5(1): 89-93. (in Japanese)
(3)Yagasaki, T., N. Hoshi and S. Harada. 1999. The initial effects of fences on the floristic composition of forest floor vegetation -The beech forests of Mt. Tanzawa. Eco-habitat, 6(1): 113-118. (in Japanese)
(4)Yagasaki, T. and Y. Sasaki. 2000. Examination of vegetational information on the survey of river environment -Report on vegetation data of National census on river environment. Eco-habitat, 7(1): 89-103. (in Japanese with English Synopsis)
(5)Yagasaki, T. and K. Suzuki. 2002. Research on mesh analysis of ecological resources and its effectiveness for integrated coastal zone management -A case study on integrated evaluation space for ecological conservation. Eco-habitat, 9(1): 85-109. (in Japanese with English Synopsis)
(6)Yagasaki, T., Y. Murakami and H. Hayashi. 2003. An estimation of potential natural vegetation in urban and regidential areas based on a survey of the species composition of small vegetation-patches. Eco-habitat, 10(1):37-55. (in Japanese with English Synopsis)
(7)Yagasaki, T., Y. Takei, Y. Mukogawa and N. Hiraizumi. 2005. A Landscape evaluation based on a phytosociological study of Kawada district, Sabae-shi, Fukui prefecture, Japan. Eco-habitat, 12(1):65-106. (in Japanese with English Synopsis)
(8)Yagasaki, T. and K. Suzuki. 2006. An ecology-based approach on current development of regional environmental planning theory -A discussion on relational ecological tools and their functions and effectiveness. Yokohama Journal of Technology Management Studies, 5: 11-24. (in Japanese with English Summary)
(9)Yagasaki, T., Y. Takei, N. Hiraizumi and K. Suzuki. 2006. A methodological study on resource evaluation of regional landscape applied to phytosociological and ethnobiological approrch – A case study of Kawada district, Sabae city, Fukui prefecture, Japan as a rural area: satochi-satoyama region -. Eco-habitat, 13(1):59-99. (in Japanese with English Synopsis)
(10)Yagasaki, T. and T. Kuramochi. 2006. A discussion on the effectiveness of the biological distribution map “ikimono-chizu” for field-based environmental education -Through a JISE ecology school in Tenjin-jima Island, Japan -. Eco-habitat, 13(1):101-109. (in Japanese with English Synopsis)
(11)Yagasaki, T. 2010. Characteristics and quantity of degraded and rehabilitated lands in Japan according to statistics. Eco-habitat, 17(1): 139-148.
(12)Harada, H. and T. Yagasaki. 2016. A Guide to the Environmental Protection Forests. 157pp. Kaiseisha Press, Otsu.
(13)Yagasaki, T. and H. Harada. 2017. Developmental history of windbreak forests on the Musashino Upland: A case study of the Kodaira Campus, Tsuda University, using historical resources and archives. Journal of Nature Restoration and Conservation 9 (1): 17-26. (in Japanese with English abstract)
(14)Ogiso, H. and T. Yagasaki. 2019. Vegetation development of 14-year-old artificial evergreen broad-leaved forests under park management. Journal of Nature Restoration and Conservation 10 (1): 23-31. (in Japanese with English abstract)

Oral Presentation

(1)Roles and effects of hands-on learning practices on wild plant species in the satoyama experience education program for elementary school children. The 25th Annual Meeting of the Japanese Society of Environmental Education (Tokyo). August, 2014.
(2)Issues and recommendations on learning techniques of hot urban environments: The use of infrared radiation thermometers in environmental education programs for school children. The 26th Annual Meeting of the Japanese Society of Environmental Education (Nagoya). August, 2015.