KOZAN, Osamu

Position: Associate Professor

MAIL: kozan [at] cseas.kyoto-u.ac.jp

Research Departments

Environmental Coexistence



Research Interests

Sustainability of the large scale tree plantation in the peat swamp forest, Indonesia

Sustainability of the large scale tree plantation in the peat swamp forest, Indonesia
The rapid deforestation in tropical countries contributes to the increase in the atmospheric concentration of carbon dioxide. On the other hand, the importance of bio-materials will be continuously increasing because of the demand of recyclable resources is increasing for the reduction of the consumption of fossil resources. We try to enhance the theoretical and empirical understanding of soil-vegetation-atmosphere exchanges of carbon dioxide (CO2), water (H2O), and energy balance components based on in situ observation and modeling in peat swamp forest, West Kalimantan. We have three research targets as follows. To estimate water budget using ground water level, rain gauge and water flux data. To observe Carbon exchange processes during and after ecological succession from a secondary forest to an artificial forest. To propose new method of ground water management to enhance timber productivity and wood quality using observation data and hydrological modeling.

  • Osamu Kozan, “Rainfall and Groundwater Level Fluctuations in the Peat Swamps”, 2016, 英語, Catastrophe and Regeneration in Indonesia’s Peatlands. Springer, NUS Press, 296-311.
  • 川井 秀一・藤田 素子・水野 広祐, 『講座生存基盤論第4巻 ─熱帯バイオマス社会の再生――インドネシアの泥炭湿地から』(第10章の執筆担当), 2012, 日本語, 京都大学学術出版会
  • 柳澤 雅之・河野 泰之・甲山治・神崎 護, 『生存基盤論第2巻 地球圏・生命圏の潜在力── 熱帯地域社会の生存基盤』, 2012, 日本語, 都大学学術出版会
  • 杉原 薫・川井秀一・河野泰之・田辺明生, 『地球圏・生命圏・人間圏:持続的生存基盤とは何か』(第4章の執筆担当), 2010, 日本語, 京都大学学術出版会
  • Tran Van Do, Phung Dinh Trung, Mamoru Yamamoto, Osamu Kozan, Nguyen Toan Thang, Dang Van Thuyet, Hoang Van Thang, Nguyen Thi Thu Phuong, Ninh Viet Khuong & Ngo Van Cam, “Aboveground biomass increment and stand dynamics in tropical evergreen broadleaved forest”, Journal of Sustainable Forestry, 2017/09, 有, 英語
  • Kok-Boon Neoh, Lee-Jin Bong, Ahmad Muhammad, Masayuki Itoh, Osamu Kozan, Yoko Takematsu, Tsuyoshi Yoshimura, “The effect of remnant forest on insect successional response in tropical fire-impacted peatland: A bi-taxa comparison”, PLoS One,12,3,1-17, 2017/03, 有, 英語
  • TRAN VAN DO, TAMOTSU SATO, VO DAI HAI, NGUYEN TOAN THANG, NGUYEN TRONG BINH, NGUYEN HUY SON, DANG VAN THUYET, BUI THE DOI, HOANG VAN THANG, TRIEU THAI HUNG, TRAN VAN CON, OSAMU KOZAN, LE VAN THANH, NGO VAN CAM, “Aboveground biomass and tree species diversity along altitudinal gradient in Central Highland, Vietnam”, Tropical Ecology,58,1,95-104, 2017/01, 有, 英語
  • Tran Van Do, Osamu Kozan, Le Xuan Truong, Nguyen Toan Thang, Dang Van Thuyet, Phung Dinh Trung and Nguyen Thi Thu Phuong, “Fine root Production in Evergreen Broadleaved Forest, Northeast Vietnam”, Open Journal of Plant Science,18-21, 2016/12, 有, 英語
  • TV Do, NV Cam, T Sato, NT Binh, O Kozan, NT Thang and R Mitlöhner, “Post-Logging Regeneration and Growth of Commercially Valuable Tree Species in Evergreen Broadleaf Forest, Vietnam”, Journal of Tropical Forest Science,28,426-435, 2016/10, 有
  • Md R Ali, B Das, Md H Islam, Md A Momin and O Kozan, “Solar energy based lighting and ventilation system for rural poultry house in Bangladesh”, Journal of Agricultural Machinery and Bio-resources Engineering,7,1, 2016/09, 有, 英語
  • Ryosuke KAJITA and Osamu KOZAN, “Earthquakes in Indonesia from 1500 to 1938: Estimation of Rossi-Forel seismic intensity scale of ground motions described in the historical materials of Dutch colonial era”,35,105-116, 2016/09, 有, 日本語
  • Neoh, K.-B., Bong, L.- J., Muhammad, A., Itoh, M., Kozan, O., Takematsu Y. and Yoshimura, T., “The impact of tropical peat fire on termite assemblage in Sumatra, Indonesia: reduced complexity of community structure and survival strategies”, Environmental Entomology,45,5,1170-1177, 2016/08, 有, 英語
  • Yoshiya Touge, Kenji Tanaka, Temur Khujanazarov, Kristina Toderich, Osamu Kozan, Eiichi Nakakita, “Developing a Water Circulation Model in the Aral Sea Basin based on in situ Measurements on Irrigated Farms”, Journal of Arid Land Studies,25,3,133-136, 2016/03, 有, 英語
  • Nguyen Toan Thang, Tran Van Do, Tamotsu Sato, Nguyen Trong Binh, Osamu Kozan, Ngo Van Cam, “Yield and Nutrient Content of Chestnut (Castanopsis piriformis) in Natural Central Highlands Forests, Vietnam”, Small-scale Forestry,15,2,229-239, 2016/01 有
  • Kok-Boon Neoh, Lee-Jin Bong, My Thi Nguyen, Vuong Tan Nguyen, Huy Quoc Nguyen, Masayuki Itoh, Osamu Kozan, Tsuyoshi Yoshimura, “Termite diversity and complexity in Vietnamese agroecosystems along a gradient of increasing disturbance”, 2015, Journal of Insect Conservation,19,6,1129-1139
  • M. F. Karim, M. Alam, Md. Rostom Ali, O. Kozan, “Design and Development of a Drum Seeder cum Granular Urea Applicator for Rural Farmers in Bangladesh”, 2015, Agricultural Engineering International
  • Tran Van Do, Tamotsu Sato, Satoshi Saito, Osamu Kozan Fine-root production and litterfall: main contributions to net primary production in an old-growth evergreen broad-leaved forest in southwestern Japan 2015, Ecological Research,30,5,921-930
  • Neoh, K.-B., Bong, L.- J. Muhammad, A. Itoh, M., Kozan.O, Takematsu, Y., Yoshimura, “Understanding the impact of fire on termites in degraded tropical peatlands and the mechanisms for their ecological success: current knowledge and research needs”, 2015
    Ecological Research,30,5,759-769
  • Tran Van Do, Tamotsu Sato, Satoshi Saito, Osamu Kozan, Hiromi Yamagawa, Dai Nagamatsu, Naoyuki Nishimura, Tohru Manabe, “Effects of micro-topographies on stand structure and tree species diversity in an old-growth evergreen broad-leaved forest, southwestern Japan”, 2015, Global Ecology and Conservation,4,185-196
  • Le Van Thanh, Tran Van Do , Nguyen Huy Son, Tamotsu Sato, Osamu Kozan, “Impacts of biological, chemical and mechanical treatments on sesquiterpene content in stems of planted Aquilaria crassna trees”, 2015, Agroforestry Systems,1-9

  • 「大規模開発下における熱帯泥炭湿地の水文過程解明と防火のための水・植生管理の検討」
    基盤研究(B), 甲山治, 2016 – 2018
  • ‘Investigation of hydrological process of tropical peat wetland and study on water and vegetation management for fire protection under large-scale development’, Grant-in-Aid for Scientific Research(B), Osamu Kozan, 2016 – 2018
  • 「泥炭火災適応策としての再湿地化と在来種植林による泥炭生態系の回復と住民の生計向上」, JICA草の根技術協力事業(草の根パートナー型), 甲山治, 2018 – 2021
  • ‘Restoration of Peatland Ecology and Livelihood Improvement through Rewetting and Revegetation toward the Prevention of Peat Fires’, JICA Partnership Program, Osamu Kozan, 2018 – 2021