Research field (6)：
Forest science
, Environmental policy and society
, Environmental impact assessment
, Local studies
, Environmental dynamics
, Ecology and environmental science
Research theme for competitive and other funds (46)：
2023 - 2026 Characteristics of nitrogen concentrations in mountain streams in the western Japan and analysis of main cause factor by using the Random Forest Method
2015 - 2019 Detect the vulnerable area for N saturation based on new concept of N saturation
2015 - 2018 Development of hybrid model for a long-term simulation of nitrogen saturation in forested ecosystems
2015 - 2018 Comprehensive understanding of dynamics of parasite infection and communities in seasonally linked ecosystems
2015 - 2018 How do we need nature? Re-defining cultural ecosystem services
2014 - 2017 The use of stable isotope ratios of nitrate in the forest ecosystems for the better understanding of nitrogen status
2013 - 2016 Initial responses of nutrient cycling and biodiversity to a large-scale N fertilization in a carbon flux monitoring site.
2012 - 2015 Seasonal changes in ecosystem linkages mediated by parasites
2012 - 2015 Nitrogen absorption in forested ecosystem is not always recovered by exclusion of feeding pressure of Japanese sika deer.
2012 - 2015 Estimation of the acutual gross nitrification rate in forest soils using stable isotope information
2010 - 2015 Multi-disciplinary Study of Southeast Asian Planted Forests and Local Societies
2011 - 2013 Estimation of nitrate use cost by woody plant
2009 - 2012 Analysis of ecosystem function of taiga in eastern Siberia
2009 - 2012 Dynamics of dissolved organic matter in the forest soil-stream system
2007 - 2010 N saturation mechanism along the forest aging and influence simulation by PnET-CN
2007 - 2009 森林植生の養分利用様式を解明するための窒素安定同位体比測定手法の開発
2006 - 2009 Development of evaluation protocols on ecological functions of forested catchments for water quality conservation
2006 - 2008 Prediction of flood and drought in ungauged mountainous basins by developing a hydrologic model for the bedrock-soil-vegetation-atmosphere continuum
2005 - 2007 Dynamics of natural old forest and its ability of environmental conservation
2004 - 2007 Inter-relationships between Forest stand structure and nitrogen dynamics in Siberian taiga
2004 - 2007 Interannual variation in carbon uptake by vegetation of Taiga in Eastern Siberia and its response to global warming
2005 - 2006 The influence of forest disturbance on stream chemistry and biodiversity
2003 - 2006 Carbon and nitrogen accumulation mehcamnisms in forested ecosystem and its estimation
2003 - 2005 Emission and oxidation of CH4 and N2O in forest catchment and effect of hydrological process
2003 - 2005 Development of a evaluation method of environmental effect on a forested ecosystem using a biogeochemical model based on stream-water hydrochemical processes
2001 - 2004 THE COMMUNITY STUDY ON INTERACTION AMONG NUTRIENT CYCLE, ANIMALS, AND PLANTS
1998 - 1999 Study on evolution of hydrobiogeochemistry with forest succession in humid temperate region
1996 - 1998 Carbon and nitrogen relationship in soil N Transformation of a forest ecosystem
1996 - 1997 Development of integrated hydro-biogeochemical model in a forest catchment
1993 - 1996 Empirical study on the role of the forest in the thermal and water interaction between atomosphere and ground.
1995 - 1995 斜面上の異なる位置における養分物質循環機構の把握とその決定要因の解明
1991 - 1993 Fine root biomass and its turn-over rates in forests
1992 - 1992 森林生態系の斜面方向の窒素循環特性の把握とその定量的評価
1990 - 1992 Forest hydrological and ecological study on the effects of forest type and its stand age on the quality and quantity of forest runoff water
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Papers (183)：
Soyoka Makino, Naoko Tokuchi, Daisuke Akaishi, Lina A. Koyama, Yukio Komai, Yoshimi Itaya, Nay Lin Maung, Kanae Ishimaru, Tomoki Oda, Rei Shibata, et al. Citizen-participatory nationwide survey of mountain streamwater chemistry in Japan in 2022: Comparison of nitrate concentrations with the 2003 survey. Ecological Research. 2024
Kohmei Kadowaki, Mie N. Honjo, Naoto Nakamura, Yoichiro Kitagawa, Masae I. Ishihara, Shunsuke Matsuoka, Yuuya Tachiki, Keitaro Fukushima, Shota Sakaguchi, Inoue Mizuki, et al. eDNA metabarcoding analysis reveals the consequence of creating ecosystem-scale refugia from deer grazing for the soil microbial communities. Environmental DNA. 2023
Soyoka Makino, Naoko Tokuchi, Yukio Komai. Causal Relationships between Stream NO3- Concentrations at Baseflow Conditions and Key Regulating Factors in the Kinki Region of Japan, Including the Japan-sea Side Area and Encompassing a Climatic Gradient. Journal of Water and Environment Technology. 2023. 21. 3. 151-165
Naoko Tokuchi, Aya Iwasaki, Takashi Yamaguchi, Kunihiro Hisatsune, Hikaru Nakagawa, Hiroaki Yago, Soyoka Makino, Kentaro Murano. 日本の窒素沈着量の長期変動(1977~2018年). Journal of the Japanese Forest Society. 2023. 105. 6. 199-208
Minori TOKITO, Daisuke AKAISHI, Juri HORI, Naoko TOKUCHI. Online Environmental Education using Emergence Workshop Methods. Japanese Journal of Environmental Education. 2023. 32. 1. 1_58-64
門脇浩明, 本庄三恵, 中村直人, 北川陽一郎, 石原正恵, 松岡俊将, 立木佑弥, 福島慶太郎, 阪口翔太, 井上みずき, et al. Effects of overbrowsing by sika deer on soil microbial communities: a case study using large-scale deer exclusion fences. 日本生態学会大会講演要旨(Web). 2023. 70th
赤石大輔, 石原正恵, 徳地直子. Conducting observation sessions in collaboration with citizens for the conservation of local biodiversity. 日本生態学会大会講演要旨(Web). 2022. 69th
時任美乃理, 赤石大輔, 法理樹里, 徳地直子, 舘野隆之輔, 後藤龍太郎, 鈴木啓太, 坂野上なお, 木下こづえ, 朝倉彰. Possibility and Challenges of Emergent Workshop: Co-designing the ecosystems of 2030 with future generations. 日本生態学会大会講演要旨(Web). 2022. 69th
京都大学・日本財団主催:高校生×研究者「京大・森里海ラボ by ONLINE」を通じてみえてきた新たな「共有」のかたち. NIPPON SUISAN GAKKAISHI. 2021. 87. 3. 301-304
Changes in Spatial Distribution of Stream Nitrate Concentrations throughout Japan over 20 Years: A Resurvey using Citizen Science
(2023)
Spatial Distribution of Stream Nitrate Concentrations throughout Japan and a Challenge of Citizen Science for A ResurveySpatial Distribution of Stream Nitrate Concentrations throughout Japan and a Challenge of Citizen Science for A Resurvey
