Methane efflux from refoolded and reforested tropical peatland

2013 Fiscal Year Final Research Report

• Project/Area Number: 21405037
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 海外学術
• Research Field: Boundary agriculture
• Research Institution: The University of Tokyo
• Principal Investigator: KOJIMA Katsumi 東京大学, アジア生物資源環境研究センター, 教授 (80211895)
• Project Period (FY): 2009-04-01 – 2014-03-31
• Keywords: メタン / 熱帯泥炭湿地 / 再湛水 / Melaleuca cajuputi / 生態系修復・整備 / 地球温暖化ガス排出削減 / 国際研究者交流 / タイ

Research Abstract

In order to predict the response of methane emission accompanying reflooding and reforestation aiming at emission reduction of CO2 from drained tropical peatlands, response of soil methane efflux to water level and methane efflux through Melaleuca cajputi trees were investigated. Soil methane efflux under flooded conditions were similar or less than under drained condition, suggesting little possibility of increase in soil methane efflux by reflooding. Methane efflux through Melaleuca trees were detected, showing water level response and temporal fluctuation, which was rather small value when compared with the CO2 emission reduction by reflooding. The thick, multi-layered bark of Melaeluca trees was revealed to be the major pathway of the methane efflux through tree body.

Research Products

• [Journal Article] Subsidence and soil CO_2 efflux in tropical peatland in southern Thailand under various water table and management conditions (2013)
  • Author(s): Nagano, T., Osawa, K., Ishida, T., Sakai, K., Vijarnsorn, P., Jongskul, A., Phetsuk, S., Waijaroen, S., Yamanoshita, T., Norisada, M., Kojima, K
  • Journal Title: Mires and Peat Volume: 11 Pages: 1-20
  • Peer Reviewed
• [Presentation] 熱帯低湿地に生育するMelaleuca cajuputi の樹体からのメタン放出の経路の推定 (2014)
  • Author(s): 則定真利子, 山ノ下卓, 古川原聡, 小島克己
  • Organizer: 第125回日本森林学会大会
  • Place of Presentation: 大宮
  • Year and Date: 2014-03-26
• [Presentation] A sustainable woody biomass production system for tropical peatlands (2012)
  • Author(s): Norisada, M., Yamanoshita, T., Adachi, K., Osawa, K., Nagano, T., Inoue, M., Ishida, T., Vijarnsorn, P., Kojima, K
  • Organizer: 14th International Peat Congress
  • Place of Presentation: Stockholm, Sweeden
  • Year and Date: 20120603-08
• [Presentation] 熱帯泥炭湿地に生育するMelaleuca cajuputiの樹体からのメタン放出 (2012)
  • Author(s): 則定真利子, 山ノ下卓, 小島克己
  • Organizer: 第123回日本森林学会大会
  • Place of Presentation: 宇都宮
  • Year and Date: 20120326-29
• [Presentation] 熱帯泥炭湿地開発地の再湛水化とメタン放出 (2010)
  • Author(s): 則定真利子, 山ノ下卓, ピスット=ビジャルンソン, 小島克己
  • Organizer: 第121回日本森林学会大会
  • Place of Presentation: つくば
  • Year and Date: 20100402-05
• [Book] アジアの生物資源環境学-持続可能な社会をめざして (2013)
  • Author(s): 小島克己
  • Total Pages: 244
  • Publisher: 東京大学出版会