2021 - 2024 Application of visualization technology of underground saturated zone to elucidate the mechanism of storm runoff generation in forested catchments
2020 - 2023 Accurate and continual water-level prediction in small rivers using inverse estimation method of rainfall-runoff processes
2019 - 2022 Water and nutrient exports from a forested catchment located at the southern limit of heavy snowfall area: focusing on the snowfall and snowmelt season
2017 - 2020 Re-evaluation of water purification function of the forest with high frequency measurements of water chemistry
2016 - 2020 Spatio and temporal dynamics of groundwater residence time revealed by multi-tracer and numerical model in headwater catchment
2014 - 2017 The use of stable isotope ratios of nitrate in the forest ecosystems for the better understanding of nitrogen status
2013 - 2017 Elucidation of catchment structure and spatiotemporal scaling mechanism of rainfall-runoff processes by tracer applications
2011 - 2016 Prediction of catchment runoff changes based on characterizing a nested structure consisting of the developments of topography, soil and vegetation
2010 - 2015 Estimation of debris flows triggered by surface landslides
2007 - 2009 Physical evaluation of critical rainfall for triggering landslides
2006 - 2009 Development of evaluation protocols on ecological functions of forested catchments for water quality conservation
2006 - 2008 Evaluation of water yielding function of forests with the comparison of rainfall-runoff characteristics between granitic-and sedimentary rock catchments
2006 - 2008 Prediction of flood and drought in ungauged mountainous basins by developing a hydrologic model for the bedrock-soil-vegetation-atmosphere continuum
2002 - 2004 森林流域の空間スケールに着目した渓流水質形成機構に関する水文学的研究
2000 - 2001 山地源流域の降雨流出過程における水質形成機構に関する研究
1996 - 森林流域における水質形成機構に関する研究
流域環境の質と環境意識の関係解明
Study on Hydrochemisty in a forest catchment
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Papers (115):
UCHIDA Taro, KOSUGI Ken'ichiro, MIZUYAMA Takahisa, KATSUYAMA Masanori. Effects of pipeflow on runoff generation process at a headwater catchment in Toinotani, Kyoto University forest in Ashiu. Forest research, Kyoto. 2024. 71. 55-64
Shibata Natsuki, Katsuyama Masanori, Itokazu Tetsushi, Masaoka Naoya, Nakamura Kimihito, Kosugi Ken'ichiro. Comparison of ion dynamics by decomposing high frequent electrical conductivity data of streamflow in forest catchments. The Japanese Forest Society Congress. 2021. 132. 530
Takizawa Ryo, Katsuyama Masanori, Shin Kicheol, Masaoka Naoya, Kosugi Kenichirou. Hydrological processes of Bedrock groundwater in Granitic mountain using Strontium isotopes tracer. The Japanese Forest Society Congress. 2021. 132. 533
KANAZAWA Akito, MASAOKA Naoya, KOSUGI Ken’ichirou, KATSUYAMA Masanori, NAKAYA Hiroaki. Estimation of Spring Water Recharge Area in Headwater Catchments. JOURNAL OF JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES. 2021. 34. 2. 100-114
Masanori Katsuyama, Nobuhito Ohte, Yoshiko Kosugi, Makoto Tani. The Kiryu Experimental Watershed: 50-years of rainfall-runoff data for a forest catchment in central Japan. Hydrological Processes. 2021. 35. 3