Study on the genesis, composition, and decomposition of tropical peat: Focusing on its diversity

• Project/Area Number: 24405029
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Plant nutrition/Soil science
• Research Institution: Kitasato University
• Principal Investigator: MAIE NAGAMITSU 北里大学, 獣医学部, 講師 (00453514)
• Co-Investigator(Kenkyū-buntansha): WATANABE Akira 名古屋大学, 生命農学研究科, 教授 (50231098) ; 木村 園子ドロテア (木村 ドロテア園子) 東京農工大学, (連合)農学研究科(研究院), 准教授 (60397015)
• Research Collaborator: BELLINGRATH-KIMURA Sonoko D. ; MELLING Lulie
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000); Fiscal Year 2015: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2014: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2013: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2012: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
• Keywords: 熱帯泥炭 / マレーシア / 物理化学的特徴 / 堆積速度 / 油ヤシプランテーション / 分解過程 / 分解速度 / 物質循環 / 炭素循環 / 多様性 / 化学的特徴 / モニタリング / 土壌有機物 / 生物地球化学的過程 / 溶存有機物 / 集積速度 / 分解

Outline of Final Research Achievements

We unveiled the accumulation rate, physicochemical properties, and decomposition rate of tropical peats formed under three major types of forest (Alan Bunga, Alan Batu, and Mixed peat swamp) in Sarawak, Malaysia. Accumulation of tropical peat began about 4,000 years ago, and the accumulation rate ranged from 0.07 to 0.20 cm/year. When incubate virgin peat under oil palm plantation (OPP) environment, all types of peat showed rapid decomposition. Alan Bunga peat, which contains larger percentages of polysaccharides, decomposed two times faster than mixed peat swamp peat. Particle size of peat lowered soon after incubation for all types of peat.

Research Products

• [Presentation] Diversity in the Physicochemical Properties of Tropical Peat developed under different vegetation in Sarawak, Malaysia (2016)
  • Author(s): Norika Kato, Nagamitsu Maie, Lulie Melling, Sonoko D. Bellingrath-Kimura, Haruo Tanaka, Masahiro Maeda, Akira Watanabe
  • Organizer: 15th International Peat Congress
  • Place of Presentation: Kuching, Sarawak, Malaysia
  • Year and Date: 2016-08-15
  • Int'l Joint Research
• [Presentation] Seasonal and interannual variations of dissolved organic matter composition in the groundwater of tropical peat under oil palm plantation management (2016)
  • Author(s): Nagamitsu Maie, Lulie Melling, Sonoko D. Bellingrath-Kimura, Kosuke Ikeya, Eikichi Shima, Hajime Tanji, Zulhilmy Abdullah Mohd, and Akira Watanabe
  • Organizer: 15th International Peat Congress
  • Place of Presentation: Kuching, Sarawak, Malaysia
  • Year and Date: 2016-08-15
  • Int'l Joint Research
• [Presentation] Changes in the physicochemical properties of tropical peat during its early decomposition under oil palm plantation environments (2016)
  • Author(s): Masahiro Maeda, Nagamitsu Maie, Lulie Melling, Hajime Tanji, Zulhilmy Abdullah Mohd, and Akira Watanabe
  • Organizer: 15th International Peat Congress
  • Place of Presentation: Kuching, Sarawak, Malaysia
  • Year and Date: 2016-08-15
  • Int'l Joint Research
• [Presentation] 油ヤシブランチーション環境下における熱帯泥炭の初期分解 (2015)
  • Author(s): 眞家永光，前田真広，Faustina Sangok，渡邉 彰，Lulie Mel1ing，丹治 肇
  • Organizer: 日本腐植物質学会名古屋大会
  • Place of Presentation: 名古屋大学（愛知県名古屋市）
  • Year and Date: 2015-11-19
• [Presentation] マレーシア国サラワク州における異なる植生下に存在する熱帯泥炭土の炭素の存在形態 (2015)
  • Author(s): 加藤紀香，田中治夫，眞家永光，Melling Lulie，木村園子ドロテア，渡邉 彰
  • Organizer: 日本腐植物質学会名古屋大会
  • Place of Presentation: 名古屋（愛知県名古屋市）
  • Year and Date: 2015-11-19
• [Presentation] 沿岸湿地を流れる河川中の溶存有機物の河口域での動態 (2015)
  • Author(s): 眞家永光, 関口暁之, 渡邉 彰, 筒木 潔, 山下 洋平, Melling Lulie, Cawley Kaelin, 嶋 栄吉, Jaffe Rudolf
  • Organizer: 日本土壌肥料学会2015年度京都大会
  • Place of Presentation: 京都大学（京都府京都市）
  • Year and Date: 2015-09-09
• [Presentation] 熱帯泥炭土壌の分解初期の変化:亜型の違いと粒径組成変化に着目して (2015)
  • Author(s): 前田真広，眞家永光，渡邉 彰，Melling Lulie，木村園子ドロテア，丹治 肇
  • Organizer: 日本土壌肥料学会2015年度京都大会
  • Place of Presentation: 京都大学（京都府京都市）
  • Year and Date: 2015-09-09
• [Presentation] マレーシア国の熱帯泥炭土壌の多様性:粒径分布と炭素組成 (2015)
  • Author(s): 加藤紀香，田中治夫，眞家永光，Melling Lulie，木村園子ドロテア，渡邉 彰
  • Organizer: 日本土壌肥料学会2015年度京都大会
  • Place of Presentation: 京都大学（京都府京都市）
  • Year and Date: 2015-09-09
• [Presentation] 熱帯泥炭土中の溶存有機物組成に及ぼす油ヤシプランテーション開発の影響 (2014)
  • Author(s): 眞家永光 渡邉彰 木村ドロテア園子他3名
  • Organizer: 日本土壌肥料学会全国大会
  • Place of Presentation: 東京農工大学(東京都、小金井市)
  • Year and Date: 2014-09-09 – 2014-09-11
• [Presentation] マレーシア国サラワク州における油ヤシプランテーション下の熱帯泥炭土の炭素組成 (2014)
  • Author(s): 加藤紀香 Lulie Melling 眞家永光 木村ドロテア園子 他3名
  • Organizer: 日本土壌肥料学会全国大会
  • Place of Presentation: 東京農工大学(東京都、小金井市)
  • Year and Date: 2014-09-09 – 2014-09-11