Japan Geoscience Union Meeting 2015

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Symbol A (Atmospheric and Hydrospheric Sciences) » A-HW Hydrology & Water Environment

[A-HW27] Water and material transport and cycle in watersheds: from headwater to coastal area

Sun. May 24, 2015 11:00 AM - 12:45 PM 301B (3F)

Convener:*Shinji Nakaya(Department of Civil Engineering, Faculty of Engineering, Shinshu University), Mitsuyo Saito(Graduate School of Environmental and Life Science, Okayama University), Shin-ichi Onodera(Graduate School of Integrated and Arts Sciences, Hiroshima University), Kazuhisa Chikita(Department of Natural History Sciences, Faculty of Science, Hokkaido University), Tomohisa Irino(Faculty of Environmental Earth Science, Hokkaido University), Masahiro Kobayashi(Forestry and Forest Products Research Institute), Seiko Yoshikawa(Narional Institute for Agro-Environmental Sciences), Noboru Okuda(Research Institute for Humanity and Nature), Chair:Noboru Okuda(Research Institute for Humanity and Nature)

11:45 AM - 12:00 PM

[AHW27-11] Atmospheric nitrogen deposition on a forest watershed in the Hokuriku district

*Yuko ITOH1, Akira OGURA2, Keiji TAKASE3 (1.FFPRI, 2.Research Center for Agricultural and Forestry, Ishikawa Prefecture, 3.Ishikawa Prefecture University)

Increase of air pollutant inflow from Asian continent with the rapid economic development is concerned about its influence on the environment. In future, in the forested area of the Hokuriku district, the disturbance of elements cycling such as nitrogen saturation may occur as well as surrounding area in the Kanto region. Therefore it is necessary to elucidate the influence on elements cycling within forest ecosystems in these area. However, it was difficult to observe the elements dynamics in forest watersheds through the year due to the heavy snowfall. In this study, we investigated the atmospheric deposition of nitrogen through rainfall and snowfall to a small forest catchment in Ishikawa prefecture.