Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity
Chlorophyll fluorescence can be remotely sensed in open fields via the Fraunhofer atmospheric absorption lines of oxygen and is termed Solar-Induced Fluorescence (SIF). SIF has been extensively related to carbon assimilation at global ecology scale and was interpreted as electron transport rate. How...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/10/2439 |
| _version_ | 1827666732385304576 |
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| author | Oded Liran |
| author_facet | Oded Liran |
| author_sort | Oded Liran |
| collection | DOAJ |
| description | Chlorophyll fluorescence can be remotely sensed in open fields via the Fraunhofer atmospheric absorption lines of oxygen and is termed Solar-Induced Fluorescence (SIF). SIF has been extensively related to carbon assimilation at global ecology scale and was interpreted as electron transport rate. However, SIF was shown to be unrelated directly to carbon assimilation at finer-scale resolution and may be related to other photosynthetic processes, such as non-photochemical quenching. This raises the question how exactly the SIF relates to actual photosynthetic activity. Based on a recently introduced spectral index that relates the photochemical fraction of SIF to the actual electron transport rate, this study presents the formulation of a structural equation, relating the remotely sensed electron transport rate index to fluorescence yield which considers the various fates of energetic quanta and electron excitation. The proposed structural equations are used to examine and interpret the relation between the novel spectral index and seasonal growth of corn (<i>Z. mays</i> Sh2, ‘super sweet’) on a platform of fertilization concentration gradient. Potential uses, practical and theoretical, for the proposed structural equations are discussed. |
| first_indexed | 2024-03-10T01:55:51Z |
| format | Article |
| id | doaj.art-4e4843c4b7294c85962300f3a726589b |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T01:55:51Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-4e4843c4b7294c85962300f3a726589b2023-11-23T12:56:18ZengMDPI AGRemote Sensing2072-42922022-05-011410243910.3390/rs14102439Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis ActivityOded Liran0Group of Agrophysics Studies, Migal Research Institute, Kiryat Shemona 11016, IsraelChlorophyll fluorescence can be remotely sensed in open fields via the Fraunhofer atmospheric absorption lines of oxygen and is termed Solar-Induced Fluorescence (SIF). SIF has been extensively related to carbon assimilation at global ecology scale and was interpreted as electron transport rate. However, SIF was shown to be unrelated directly to carbon assimilation at finer-scale resolution and may be related to other photosynthetic processes, such as non-photochemical quenching. This raises the question how exactly the SIF relates to actual photosynthetic activity. Based on a recently introduced spectral index that relates the photochemical fraction of SIF to the actual electron transport rate, this study presents the formulation of a structural equation, relating the remotely sensed electron transport rate index to fluorescence yield which considers the various fates of energetic quanta and electron excitation. The proposed structural equations are used to examine and interpret the relation between the novel spectral index and seasonal growth of corn (<i>Z. mays</i> Sh2, ‘super sweet’) on a platform of fertilization concentration gradient. Potential uses, practical and theoretical, for the proposed structural equations are discussed.https://www.mdpi.com/2072-4292/14/10/2439chlorophyll fluorescenceelectron transport ratenon-photochemical quenchingquantum yieldsolar-induced fluorescence |
| spellingShingle | Oded Liran Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity Remote Sensing chlorophyll fluorescence electron transport rate non-photochemical quenching quantum yield solar-induced fluorescence |
| title | Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity |
| title_full | Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity |
| title_fullStr | Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity |
| title_full_unstemmed | Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity |
| title_short | Formulation of a Structural Equation Relating Remotely Sensed Electron Transport Rate Index to Photosynthesis Activity |
| title_sort | formulation of a structural equation relating remotely sensed electron transport rate index to photosynthesis activity |
| topic | chlorophyll fluorescence electron transport rate non-photochemical quenching quantum yield solar-induced fluorescence |
| url | https://www.mdpi.com/2072-4292/14/10/2439 |
| work_keys_str_mv | AT odedliran formulationofastructuralequationrelatingremotelysensedelectrontransportrateindextophotosynthesisactivity |