Ground-based Spectral Measurements of Chlorophyll Fluorescence from Vegetation Canopies

Material type: 文書・図像類

Author: KURIYAMA, Kenjiほか

Publisher: Chiba University. Center for Environmental Remote Sensing

Publication date: 2016-11-21

Material Format: Digital

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Note (General)：: type:text[ABSTRACT]Detection of vegetation fluorescence is important for understanding physiology of vegetation leaves in relation to photosynthetic a...

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Material Type: 文書・図像類
Title: Ground-based Spectral Measurements of Chlorophyll Fluorescence from Vegetation Canopies
Author/Editor: KURIYAMA, Kenji
HONMA, Koki
SHIRAIWA, Tatsuhiko
MANAGO, Naohiro
KUZE, Hiroaki
Author Heading: KURIYAMA, Kenji
HONMA, Koki
SHIRAIWA, Tatsuhiko
MANAGO, Naohiro
KUZE, Hiroaki
Publication, Distribution, etc.: Chiba University. Center for Environmental Remote Sensing
Publication Date: 2016-11-21
Publication Date (W3CDTF): 2016-11-21
Periodical title: Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
No. or year of volume/issue: 24
Volume: 24
Pages: 404-407
Text Language Code: eng
Target Audience: 一般
Note (General): type:text
[ABSTRACT]Detection of vegetation fluorescence is important for understanding physiology of vegetation leaves in relation to photosynthetic activities. We have developed a stand-off system that enables the observation of vegetation fluorescence under both laboratory and field conditions. The intrinsic difficulty in monitoring weak fluorescence signal is the separation between the fluorescence signal around 740 nm and the large reflection of vegetation leaves in the near infrared (NIR) spectral region. In the laboratory measurement, it has been proven that a LED-based light source coupled with cold- or hot- mirrors can provide illumination with only visible or NIR part of the spectrum. The “pure” visible illumination, which is mostly free from the NIR radiation, can lead to the observation of fluorescence signals without hindrance from large NIR reflection. The NIR illumination, on the other hand, enables the evaluation of pure reflectance in NIR free from the fluorescence contribution. The combination of such pieces of spectral information makes it possible to implement the detailed analysis of solar radiation induced fluorescence signals. For field applications, a stand-off measurement system based on an astronomical telescope has been developed to carry out the spectral measurement using a CCD spectrometer, together with the two-dimensional measurement of the fluorescence intensity distribution by means of a cooled CCD camera. A narrow-band optical filter centered at 760 nm, the wavelength of the oxygen A-band, is employed with the CCD camera to exploit the “solar blind” wavelength for the florescence measurement under daylight conditions. We describe the application of the system to a soya-bean field in Kyoto University.
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 千葉大学 : 千葉大学学術成果リポジトリ