Development of a continuous stable isotopic measuring system for precise separate estimation of sources and sinks of greenhouse gases

开发连续稳定同位素测量系统，用于精确单独估算温室气体源和汇

• 批准号: 21200030
• 负责人: MURAYAMA Shohei
• 金额: $ 20.05万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Innovative Areas (Research a proposed research project)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21200030/
• 关键词: 物質循環; 安定同位体; 温室効果気体; レーザ分光; 安定同位体比; 連続測定; 赤外吸収法; 炭素循環

Development of a precise continuous measuring system of stable isotopic ratios of carbon dioxide has been made using an infrared spectroscopic technique. Mid-infrared absorption lines of each isotopologue suitable for precise isotopic measurement have been selected. A proto-type measuring system has been produced, which is equipped with a distributed feedback quantum cascade laser emitting the light with the wave length band including the selected absorption lines. Using this system, absorption spectrum of carbon dioxide can be measured, so that the selected absorption lines can be identified. Although the fundamental structure of the isotopic measuring system has been developed through this study, it has been suggested that further improvement is necessary for precise continuous measurement at observation sites.

使用红外光谱技术开发了二氧化碳稳定同位素比率的精确连续测量系统。已经选择了适合精确同位素测量的每个同位素体的中红外吸收线。已经生产出原型测量系统，该系统配备了分布式反馈量子级联激光器，发射具有包括选定吸收线的波长带的光。使用该系统可以测量二氧化碳的吸收光谱，从而可以识别所选的吸收线。虽然通过这项研究已经开发出了同位素测量系统的基本结构，但有人建议，为了在观测地点进行精确的连续测量，还需要进一步改进。

项目成果

安定同位体比測定による温室効果気体の循環の解明

通过测量稳定同位素比率阐明温室气体的循环

• 发表时间: 2010
• 作者: 村山昌平

飛騨高山森林観測サイトにおける土壌空気中CO_2の炭素安定同位体比の季節変動

飞騨高山森林观测点土壤和空气CO_2碳稳定同位素比的季节变化

• 发表时间: 2011
• 作者: 村山 昌平;石戸谷 重之;近藤 裕昭;宇佐美 哲之;高村近子;近藤美由紀;中澤高清;青木周司
• 通讯作者: 青木周司

Seasonal variations of atmospheric CO_2, δ^C, and δ^O at a cool temperate deciduous forest in Japan : Influence of Asian monsoon

日本冷温带落叶林大气CO_2、δ^<13>C和δ^<18>O的季节变化：亚洲季风的影响

• DOI: 10.1029/2009jd013626
• 发表时间: 2010
• 作者: Murayama; S.; C. Takamura; S. Yamamoto; N. Saigusa; S. Morimoto; H. Kondo; T. Nakazawa; S. Aoki; T. Usami; M. Kondo
• 通讯作者: M. Kondo

Long-term measurements of carbon budget in forest ecosystems at AIST stations in Japan and Thailand

日本和泰国 AIST 站森林生态系统碳收支的长期测量

• 发表时间: 2011
• 作者: 村山昌平;近藤裕昭;前田高尚;三枝信子;石戸谷重之;山本晋
• 通讯作者: 山本晋

Long-term measurements of carbon budget in forest ecosystems at AIST stations in Japan and Thailand

日本和泰国 AIST 站森林生态系统碳收支的长期测量

• 发表时间: 2011
• 作者: Murayama; S.; H. Kondo; T. Maeda; N. Saigusa; S. Ishidoya;S. Yamamoto
• 通讯作者: S. Yamamoto