Remote Probing of Plant Photosynthetic Apparatus by Measuring Laser-Induced Fluorescence

Remote Probing of Plant Photosynthetic Apparatus by Measuring Laser-Induced Fluorescence Laser-induced fluorescence of birch, pine, and aspen trees was studied. The fluorescence of birch leaves, excited with a Xe–Cl laser at a wavelength of 308 nm, was measured under laboratory conditions. A persistent directly proportional dependence was found between the measured fluorescence signals and the chlorophyll content. An apparatus for measuring laser-induced fluorescence under field conditions was designed. Deciduous trees were found to have a wider range of fluorescence variability when compared to conifers, with the fluorescence intensity increasing in the leaves of deciduous trees before the autumn fall of leaves, during leaf yellowing. It is concluded that the method of lidar probing can be used for identifying tree species and assessing the condition of leaf and needle canopies. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Remote Probing of Plant Photosynthetic Apparatus by Measuring Laser-Induced Fluorescence

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Publisher
Springer Journals
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1016767817076
Publisher site
See Article on Publisher Site

Abstract

Laser-induced fluorescence of birch, pine, and aspen trees was studied. The fluorescence of birch leaves, excited with a Xe–Cl laser at a wavelength of 308 nm, was measured under laboratory conditions. A persistent directly proportional dependence was found between the measured fluorescence signals and the chlorophyll content. An apparatus for measuring laser-induced fluorescence under field conditions was designed. Deciduous trees were found to have a wider range of fluorescence variability when compared to conifers, with the fluorescence intensity increasing in the leaves of deciduous trees before the autumn fall of leaves, during leaf yellowing. It is concluded that the method of lidar probing can be used for identifying tree species and assessing the condition of leaf and needle canopies.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 10, 2004

References

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