Development of portable carbon isotope observation system to evaluate carbon cycle in ecosystems

开发便携式碳同位素观测系统以评估生态系统中的碳循环

• 批准号: 22681002
• 负责人: TAKANASHI Satoru
• 金额: $ 10.57万
• 依托单位: Forestry and Forest Products Research Institute
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22681002/
• 关键词: 物質循環; 生態系モデル; 炭素貯留; 同位体; 光合成; 呼吸; レーザー分光; 二酸化炭素; 森林; 炭素循環; フェノロジー; 樹木; 多層モデル; レーザー安定同位体分析装置

Fluxes and concentrations of carbon dioxide isotope compositions provide information about not only carbon balance but also ecosystem physiological processes and their response to environmental variation. For continuous measurement of carbon dioxide isotopic composition over various time-scales using a tunable diode laser spectrometer (TDLS), the performance of a TDLS was tested. Using this TDLS, we developed portable carbon isotope observation system, and continuously observed carbon isotopic composition of carbon dioxide in a field. The carbon isotopic composition of the atmospheric carbon dioxide was fluctuated according the changes of carbon dioxide concentration and fluctuations of the carbon isotope signal from soil respired carbon dioxide was not detected, although Keeling plots to estimate isotope signal from the soil were very sensitive and the results were very scattered especially in winter.

二氧化碳同位素组成的通量和浓度不仅提供了碳平衡信息，而且还提供了生态系统生理过程及其对环境变化的响应信息。为了在不同时间尺度上连续测量二氧化碳同位素组成，测试了可调谐二极管激光光谱仪（TDLS）的性能。利用该TDLS研制了便携式碳同位素观测系统，实现了野外二氧化碳碳同位素组成的连续观测。大气二氧化碳的碳同位素组成随二氧化碳浓度的变化而波动，土壤呼吸二氧化碳碳同位素信号的波动未被检测到，尽管基林样地估算土壤同位素信号非常敏感，但结果非常分散，特别是在冬季。

项目成果

Temporal and spatial distribution of CO2 and H2O isotopic composition in a red-pine forest

红松林CO2和H2O同位素组成的时空分布

• 发表时间: 2010
• 作者: Takanashi;S.;Nakai;Y.;Kitamura K.;Wada R.;Takemura;M.;Ouchi;M.;Nakayama;T.;Matsumi;Y.;Kurita;N.;Fujiyoshi;Y.;Muramoto;K.;Hiyama;T.;Inoue;G.;Kodama;N.;Nakano;T.
• 通讯作者: T.

Is variation of soil respiration linked to diurnal patterns of photosynthesis? : Carbon partitioning by ^<13>C pulse labeling

土壤呼吸的变化与光合作用的昼夜模式有关吗？

• 发表时间: 2012
• 作者: MAKITA Naoki(牧田直樹京大);KOSUGI Yoshiko(小杉緑子京大);TAKANASHI Satoru(高梨聡)
• 通讯作者: TAKANASHI Satoru(高梨聡)

Real-time, continuous measurements of CO_2 and H_2O isotopic compositions in the forest site at the foot of Mt.Fuji using laser absorption spectrometers

使用激光吸收光谱仪实时、连续测量富士山脚下森林中的CO_2和H_2O同位素组成

• 发表时间: 2010
• 作者: K. Nakahata;T. Matsumoto;T. Iga;Sato,M. and Kuwano,R;Nakai T;R.Wada
• 通讯作者: R.Wada

Temporal and spatial distribution of CO_2 and H_2O isotopic compositions in a red-pine forest

红松林CO_2和H_2O同位素组成的时空分布

• 发表时间: 2010
• 作者: TAKANASHI;S.;NAKAI;Y.;KITAMURA;K.;WADA;R.;TAKEMURA;M.;OUCHI;M.;NAKAYAMA;T.;MATSUMI;Y.;KURITA;N.;FUJIYOSHI;Y.;MURAMOTO;K.;HIYAMA;T.;INOUE;G. ;KODAMA;N. ;NAKANO T
• 通讯作者: NAKANO T

Time lag between photosynthesis and respiration in Quercus serrata tree using 13C pulse labeling

使用 13C 脉冲标记观察锯缘栎树光合作用和呼吸之间的时间滞后

• 发表时间: 2012
• 作者: Dannoura M.;Kominami Y.;Takanashi S.;Yoshimura K.;Ataka M.;Andreasson F.;Epron D.;Makita N.;Okumura M.;and Takanashi K.
• 通讯作者: and Takanashi K.