29 December 2000 Estimation of the state of urban coniferous trees by chlorophyll fluorescence
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Proceedings Volume 4341, Seventh International Symposium on Atmospheric and Ocean Optics; (2000); doi: 10.1117/12.412012
Event: 7th International Symposium on Atmospheric and Ocean Optics, 2000, Tomsk, Russian Federation
Abstract
Coniferous trees are characterized by a high sensibility to an atmospheric pollution. Therefore, they are widely used in contamination level indication. Methods, basing on the chlorophyll fluorescence recording, are among the fastest methods of plants physiological state definition. In the present work the physiological state of coniferous trees, growing in several districts of Tomsk City with different degree of air pollution was investigated by fluorescent methods. It was found that in winter-spring time the fluorescence intensity of the trees in stronger polluted areas is higher. The reason is that the weakened plants can not reach the state of the deep dormancy. Therefore, under artificial removing, they overpass this state earlier, showing the higher physiological activity in comparison with plants of the pure sites.
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Larissa V. Khan, Nina V. Pahar'kova, Yury S. Grigoriev, Tatjana P. Astafurova, "Estimation of the state of urban coniferous trees by chlorophyll fluorescence", Proc. SPIE 4341, Seventh International Symposium on Atmospheric and Ocean Optics, (29 December 2000); doi: 10.1117/12.412012; https://doi.org/10.1117/12.412012
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KEYWORDS
Luminescence

Contamination

Pollution

Air contamination

Chemical analysis

Atmospheric sensing

Photonic devices

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