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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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