Dynamic of Fluorescence Emissions at O(2)A and O2B Telluric Absorption Bands in Forested Areas with Seasonal APAR and GPP Variations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F23%3A00567213" target="_blank" >RIV/86652079:_____/23:00567213 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2072-4292/15/1/67" target="_blank" >https://www.mdpi.com/2072-4292/15/1/67</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/rs15010067" target="_blank" >10.3390/rs15010067</a>
Alternative languages
Result language
angličtina
Original language name
Dynamic of Fluorescence Emissions at O(2)A and O2B Telluric Absorption Bands in Forested Areas with Seasonal APAR and GPP Variations
Original language description
We measured dynamics of solar-induced chlorophyll fluorescence at telluric oxygen absorption bands O(2)A and O2B in evergreen spruce and deciduous beech forests. Seasonal variations in fluorescence emissions were compared with NDVI. Daily changes in fluorescence emissions were compared with canopy shadow fraction (alpha(S)) dynamics, which showed impact of branch and leaf positions on detected fluorescence signals based on comparison with canopy height model. Absorbed photosynthetically active radiation (APAR) was recognized as a large determinant of fluorescence changes within the O(2)A band (SIFA), with R-2 > 0.68. Fluorescence within the O2B band was more directly linked to NDVI. Although, the seasonal dynamics of fluorescence within the O2B band (SIFB) were similar to SIFA in the spruce forest. In the beech forest, SIFB showed different seasonal dynamics as compared with SIFA. SIFA in the spruce forest showed a relationship to gross primary productivity (GPP), with R-2 = 0.48, and a relationship of R-2 = 0.37 was estimated for the SIFA-GPP connection in the beech forest. SIFB was better linked to seasonal GPP in the beech forest, but with a negative slope in the relationship with R-2 = 0.61. We have shown that measurements of passive fluorescence signals at telluric oxygen absorption bands can contribute to understanding to photosynthesis processes in forest canopies.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10610 - Biophysics
Result continuities
Project
<a href="/en/project/EF16_019%2F0000797" target="_blank" >EF16_019/0000797: SustES - Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Remote Sensing
ISSN
2072-4292
e-ISSN
2072-4292
Volume of the periodical
15
Issue of the periodical within the volume
1
Country of publishing house
CH - SWITZERLAND
Number of pages
19
Pages from-to
67
UT code for WoS article
000909575800001
EID of the result in the Scopus database
2-s2.0-85145975383