Evaluation of tropical fast wood plantation as a new emission source of nitrous oxide and development of mitigation options

热带快木人工林作为一氧化二氮新排放源的评估和缓解方案的制定

• 批准号: 19255011
• 负责人: OHTA Seiichi
• 金额: $ 17.39万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-19255011/
• 关键词: 亜酸化窒素; 熱帯; 早生樹; 植林; 温暖化緩和; アカシア・マンギウム; 温暖化; マメ科

We investigated the soil surface nitrous oxide (N_2O) flux in the Acacia mangium plantations, and some mitigation options to reduce it on Sumatra, Indonesia. The results obtained were as follows. (1) The soil of A. mangium plantation was emitting significantly larger amounts of N2O in comparison with the secondary forests in the same area. (2) N_2O emission from A. mangium plantation showed clear seasonal fluctuation, high in wet season and low in dry season. (3) N2O flux reached up to 4 to 5 times higher particularly immediately after tree harvest than in usual year. (4) N2O flux showed a pronounced spatial heterogeneity even in the same stand both in a wet and dry seasons, and their causes were different from each other. (5) Application of charcoal to soils have potentials to reduce N2O emission from the soil, and phosphorous application is also suppressed the emission through promoted nitrogen absorption by tree roots.

研究了印度尼西亚苏门答腊岛马占相思人工林土壤表面氧化亚氮（N_2O）排放通量，并提出了相应的减缓措施。获得的结果如下。(1)A.与同一地区次生林相比，马占木种植园释放的N2O量显著增加。(2)A.马占木种植园具有明显的季节波动性，丰水期高，枯水期低。(3)N2O通量达到4至5倍，特别是在树木收获后立即比往年高。(4)同一林分在丰水期和枯水期的N2O通量均表现出明显的空间异质性，其原因各不相同。(5)施用木炭可以减少土壤N2O的排放，施磷也可以通过促进根系对氮的吸收来抑制土壤N2O的排放。

项目成果

熱帯早生樹のリターから生成する溶存有機物の生分解特性とNMR特性

热带快木凋落物产生的溶解有机物的生物降解和核磁共振特征

• 发表时间: 2008
• 作者: Nakagawa;M.;Hyodo;F. & Nakashizuka;T.;中村 誠・太田 誠一・Saifuddin Anshori・Hardjono Arisman
• 通讯作者: 中村 誠・太田 誠一・Saifuddin Anshori・Hardjono Arisman

Acacia mangium の伐採・収穫が土壌N_2Oフラックスに及ぼす影響

马占相思砍伐和收获对土壤N_2O通量的影响

• 发表时间: 2009
• 作者: 河原由香里・太田誠一・石塚成宏・Joko Herianto;Agus Wicaksono・根田遼太・鱧谷友樹・森大樹
• 通讯作者: Agus Wicaksono・根田遼太・鱧谷友樹・森大樹

Acacia mangium 樹皮炭の添加が土壌窒素動態に及ぼす影響

添加马占相思树皮炭对土壤氮动态的影响

• 发表时间: 2008
• 作者: Junker;R. R.;Itioka;T.;Bragg;P. E. and Bluthgen;N;鱧谷友樹・太田誠一・石塚成宏・根田遼太・河原由香里・森大喜・Hardjono Arisman・Agus Wicaksono・Joko Heriyanto
• 通讯作者: 鱧谷友樹・太田誠一・石塚成宏・根田遼太・河原由香里・森大喜・Hardjono Arisman・Agus Wicaksono・Joko Heriyanto

Changes in soil carbon stock after deforestation and subsequent establishment of “Imperata” grassland in the Asian humid tropics

• DOI: 10.1007/s11104-009-0175-y
• 发表时间: 2010-04
• 期刊: Plant and Soil
• 影响因子: 4.9
• 作者: Yusuke Yonekura;S. Ohta;Y. Kiyono;Darul Aksa;K. Morisada;Nagaharu Tanaka;M. Kanzaki

Acacia mangium 植林地土壌における亜酸化窒素フラックス空間構造の季節変動要因

马占相思人工林土壤氧化亚氮通量空间结构的季节因素

• 发表时间: 2010
• 作者: 根田遼太・太田誠一・石塚成宏・Joko Herianto;Agus Wicaksono
• 通讯作者: Agus Wicaksono