Application of stable isotope measurements and microbiological analysis to elcidate methane dynamics in various soils

• Project/Area Number: 20780117
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Forest science
• Research Institution: National Institute for Agro-Environmental Sciences
• Principal Investigator: ITOH Masayuki National Institute for Agro-Environmental Sciences, 物質循環研究領域, 農環研特別研究員 (70456820)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2008: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 水資源涵養 / 水質 / 物質循環 / 温室効果ガス / メタン / 森林 / 湿地 / 生物地球化学 / 安定同位体 / 微生物群集解析

Research Abstract

Methane flux and its controlling environmental factors were investigated in forests in Asian region. In temperate forest, methane uptake was dominant at dry forest floor part, however, large methane emission was obsereved at wet part. In addition, rainfall pattern and hydrological processes played important roles on controlling methane production including its production pathways.

Research Products

• [Journal Article] Methane flux characteristics in forest soils under an East Asian monsoon climate, Soil Biol (2009)
  • Author(s): Itoh, M., Ohte, N., Koba, K.
  • Journal Title: & Biochem 41 Pages: 388-395
• [Journal Article] Biogeochemistry of nitrous oxide in groundwater in a forested ecosystem elucidated by nitrous oxide isotopomer measurements (2009)
  • Author(s): Koba, K., Osaka, K., Tobari, Toyoda, S., Ohte, N., Katsuyama, M., Suzuki, N., Itoh, M., Yamagishi, H., Kawasaki, M., Kim, S-J., Yoshida, N., Nakajima, T.
  • Journal Title: Geochimica et Cosmochimica Acta 73 Pages: 3115-3133
• [Journal Article] Biogeochemistry of nitrous oxide in groundwater in a forested ecosystem elucidated by nitrous oxide isotopomer measurements (2009)
  • Author(s): Keisuke Koba
  • Journal Title: Geochimica et Cosmochimica Acta 73 Pages: 3115-3133
  • Peer Reviewed
• [Journal Article] Methane flux characteristics in forest soils under an East Asian monsoon climate (2009)
  • Author(s): Masayuki Itoh
  • Journal Title: Soil Biology & Biochemistry 41 Pages: 388-395
  • Peer Reviewed
• [Journal Article] Analysis of methane production pathways in a riparian wetland of a temperate forest catchment, usingδ13C of porewater CH4 and CO2 (2008)
  • Author(s): Itoh, M., Ohte, N., Koba, K., Sugimoto. A., Tani, M.
  • Journal Title: J. Geophys. Res. 113
• [Journal Article] Denitrification activity and relevant bacteria revealed by nitrite reductase gene fragments in soil of temperate mixed forest (2008)
  • Author(s): Katsuyama, C., Kondo, N., Suwa, Y., Yamagishi, T., Itoh, M., Ohte, N., Kimura, H., Nagaosa, K., Kato, K.
  • Journal Title: Microbes and Environments 23 Pages: 337-345
  • NAID: 110007005107
• [Journal Article] Analysis of methane production pathways in a riparian wetland of a temperate forest catchment, using δ^<13>C of porewater CH_4 and CO_2 (2008)
  • Author(s): Masayuki Itoh
  • Journal Title: Journal of Geophysical Research 113
  • Peer Reviewed
• [Journal Article] Denitrification activity and relevant bacteria revealed by nitrite reductase gene fragments in soil of temperate mixed forest (2008)
  • Author(s): Katsuyama Chie
  • Journal Title: Microbes and Environments 23 Pages: 337-345
  • Peer Reviewed
• [Journal Article] Partitioning of respiratory CO_2 fluxes from a C3 turfgrass field
  • Author(s): Yoshiko Kosugi
  • Journal Title: Journal of Agricultural Meteorology (印刷中)
  • Peer Reviewed
• [Journal Article] Photosynthesis and respiration of C3 turfgrass fields under various light conditions
  • Author(s): Yoshiko Kosugi
  • Journal Title: Journal of Agricultural Meteorology (印刷中)
  • Peer Reviewed
• [Presentation] Application of stable isotope measurements and microbiological analysis for detecting methanogenic activity in a temperate forest wetland (2009)
  • Author(s): Itoh, M., Katsuyama, C., Kondo, N., Ohte, N., Kato, K
  • Organizer: AGU Fall Meeting
  • Place of Presentation: San Francisco
  • Year and Date: 2009-12-17
• [Presentation] 新たな水管理技術による水田からのメタン放出抑制試験 (2009)
  • Author(s): 伊藤雅之
  • Organizer: 日本土壌肥料学会大会
  • Place of Presentation: 京都大学
  • Year and Date: 2009-09-15
• [Presentation] Reducing CH4 emission from rice paddy fields by altering water management (2009)
  • Author(s): Itoh, M., Sudo, S., Yagi, K.
  • Organizer: Conference on the Environmental Impacts of Carbon and Nitrogen Cycles in Terrestrial ecosystems in East Asia
  • Place of Presentation: Nanjing, China
  • Year and Date: 2009-09-08
• [Presentation] Reducing CH_4 emission from rice paddy fields by altering water management (2009)
  • Author(s): 伊藤雅之
  • Organizer: Conference on the Environmental Impacts of Carbon and Nitrogen Cycles in Terrestrial ecosystems in East Asia
  • Place of Presentation: 南京土壌科学院
  • Year and Date: 2009-09-08
• [Presentation] Application of stable isotope measurements and microbiological analysis for detecting methanogenic activity in a temperate forest wetland (2008)
  • Author(s): Itoh, M., Katsuyama, C., Kondo, N., Ohte, N., Kato, K
  • Organizer: Hydrochange2008
  • Place of Presentation: Kyoto
  • Year and Date: 2008-10-02
• [Presentation] Application of stable isotope measurements and microbiological analysis for detecting methanogenic activity in a temperate forest wetland (2008)
  • Author(s): Masayuki Itoh
  • Organizer: Hydrochange 2008
  • Place of Presentation: Kyoto
  • Year and Date: 2008-10-02
• [Presentation] 新たな水管理技術による水田からのメタン放出抑制試験 (2008)
  • Author(s): 伊藤雅之, 須藤重人, 八木一行
  • Organizer: 2009年日本土壌肥料学会大会
  • Place of Presentation: 京都大学
  • Year and Date: 2008-09-17
• [Presentation] 人為的改変をうけた熱帯泥炭湿原の温室効果ガス動態 (2008)
  • Author(s): 伊藤雅之, 嶋村鉄也, 大手信人, 須藤重人
  • Organizer: 2008年日本土壌肥料学会大会
  • Place of Presentation: 名古屋市立大学
  • Year and Date: 2008-09-09