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| Ishizuka Shigehiro | |
| Forest Soil Laboratory, Hokkaido Research Center, | |
| Forestry and Forest products Research Institute, | |
| Ministry of Agr, For., and Fish. | |
| 7 Hitsujigaoka, Toyohira, Sapporo 062-8516 | |
| Tel: +81-11-851-4131 ext.249, Fax: +81-11-851-4167 | |
| Email: ishiz03@ffpri-hkd.affrc.go.jp |
2,010,000 Yen
To obtain CH4 flux data of Japanese forest soils, we set 15 experimental sites (7sites in Kanto District and 8 sites in Hokkaido, northern part of Japan), and measuring the CH4 flux in a year. The methane uptake rate ranged from 1.5-6.0 mg CH4 m-2 d-1 in Hokkaido and 0.7-10.7 mg CH4 m-2 d-1 in Kanto District, respectively. The average of CH4 uptake rate was 3.3 mg CH4 m-2 d-1 (S.D.=1.1, n=8) in Hokkaido and 3.9 mg CH4 m-2 d-1 (S.D.=2.0, n=7) in Kanto District, respectively. The CH4 uptake rate is larger than the previous reports, obtained in European countries and the United States. Our result suggests that the global CH4 uptake rate of terrestrial ecosystems may underestimate.
Methane, Forest Soils, Deciduous Forest, Evergreen Forest