2002 Fiscal Year Final Research Report Summary
Integrated study on carbon dynamics and water cycle in the atmosphere-forest-stream system of mountainous catchment
| Project/Area Number |
12460068
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
林学
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
TANI Makoto Graduate School of Agriculture, Kyoto University, Professor, 農学研究科, 教授 (00314245)
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| Co-Investigator(Kenkyū-buntansha) |
KOSUGI Ken'ichiro Graduate School of Agriculture, Kyoto University, Instructor, 農学研究科, 助手 (30263130)
KOSUGI Yoshiko Graduate School of Agriculture, Kyoto University, Instructor, 農学研究科, 助手 (90293919)
OHTE Nobuhito Graduate School of Agriculture, Kyoto University, Associate Professor, 農学研究科, 助教授 (10233199)
HAMOTANI Ken Graduate School of Agriculture and Biological Sciences, Osaka Prefecture University, Lecturer, 農学部, 講師 (30264815)
MONJI Nobutaka Graduate School of Agriculture and Biological Sciences, Osaka Prefecture University, Professor, 農学部, 教授 (20111982)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Water cycle / Carbon dynamics / Boundary layer meteorlogy / Hydrology / Bigeochemistry / Dry deposition / Dissolved organic carbon / Global warming |
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| Research Abstract |
Global warming is recognized as the most important environmental issues, and studies on the CO_2 exchange between forest and the atmosphere are conducted all over the world. However, only a few studies focus on the total carbon dynamics involved in hydrological cycle in a forested catchment although this is a key process for evaluating feedback effects of forest ecosystem on the climate. This study attempts to understand this process in a temperate forested catchment based on micrometeorological, biogeochemical and hydrological observations. The findings summarized as follows. (1) Effects of topographical effects on heat/H_2O/CO_2 fluxes were assessed to get their accurate rates. (2) A multilayer model simulating heat/H_2O/CO_2 movements above and within forest canopy was validated by the observations. (3) Biomass heat storage of the forest was estimated from the detailed measurements. (4) Flow pathways on hillslope were estimated using dissolved organic carbon (DOC), sodium and sulfate as the tracers. (5) The dynamics of DOC along the runoff process were classified and the DOC budget within soil was estimated. (6) The dynamics of nitrogen and sulfur were investigated and the characteristics in Japan estimated from our study were compared with those in North America.
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Research Products
(26 results)
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[Publications] Ohte, N., Tokuchi, N., Shibata H., Tsujimura, M., Tanaka, T., Mitchell, M.J: "Hydrobiogeochemistry of Forest ecosystems in Japan : Major Themes and Research Issues. Hydrological Processes"Hydrological Processes. 15. 1771-1789 (2001)
Description
「研究成果報告書概要(和文)」より
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[Publications] Ohte, N., Mitchell, M.J., Shibata, H., Tokuchi, N., Toda, H., Iwatsubo, G: "Comparative evaluation on nitrogen saturation of forest catchments in Japan and northeastern United States"Water, Air, and Soil Pollution. 130. 649-654 (2001)
Description
「研究成果報告書概要(和文)」より
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[Publications] Hobara, S., Tokuchi, N., Ohye, N., Koba, K., Katsuyama, M., Kim, S.J., Nakansihi, A: "Mechanism of nitrate loss from a forested catchment following a small-scale, natural disturbance"Canadian Journal of Forest Research. 31. 1326-1335 (2001)
Description
「研究成果報告書概要(和文)」より
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[Publications] Ohte, N., Tokuchi, N., Shibata H., Tsujimura, M., Tanaka, T., and Mitchell, M. J.: "Hydrobiogeochemistry of Forest ecosystems in Japan: Major Themes and Research Issues"Hydrological Processes. 15. 1771-1789 (2001)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Ohte, N., Mitchell, M. J., Shibata, H., Tokuchi, N., Toda, H., and Iwatsubo, G.: "Comparative evaluation on nitrogen saturation of forest catchments in Japan and northeastern United States"Water, Air, and Soil Pollution. 130. 649-654 (2001)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Hobara, S., Tokuchi, N., Ohye, N., Koba, K., Katsuyama M., Kim, S. J. and Nakansihi, A.: "Mechanism of nitrate loss from a forested catchment following a small-scale natural disturbance"Canadian Journal of Forest Research. 31. 1326-1335 (2001)
Description
「研究成果報告書概要(欧文)」より
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