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Impact of Structural, Photochemical and Instrumental Effects on Leaf and Canopy Reflectance Variability in the 500-600 nm Range

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Impact of Structural, Photochemical and Instrumental Effects on Leaf and Canopy Reflectance Variability in the 500-600 nm Range

dc.contributor.author	Moncholi Estornell, Adrián
dc.contributor.author	Van Wittenberghe, Shari
dc.contributor.author	Cendrero Mateo, Maria Pilar
dc.contributor.author	Alonso Chordá, Luis
dc.contributor.author	Malenovský, Zbyněk
dc.contributor.author	Moreno Méndez, José F.
dc.date.accessioned	2023-06-29T14:39:58Z
dc.date.available	2023-06-29T14:39:58Z
dc.date.issued	2022
dc.identifier.citation	Moncholi Estornell, Adrián Van Wittenberghe, Shari Cendrero Mateo, Maria Pilar Alonso Chordá, Luis Malenovský, Zbyn&#283k Moreno Méndez, José F. 2022 Impact of Structural, Photochemical and Instrumental Effects on Leaf and Canopy Reflectance Variability in the 500-600 nm Range Remote Sensing 14 1 56
dc.identifier.uri	https://hdl.handle.net/10550/88589
dc.description.abstract	Current rapid technological improvement in optical radiometric instrumentation provides an opportunity to develop innovative measurements protocols where the remote quantification of the plant physiological status can be determined with higher accuracy. In this study, the leaf and canopy reflectance variability in the PRI spectral region (i.e., 500-600 nm) is quantified using different laboratory protocols that consider both instrumental and experimental set-up aspects, as well as canopy structural effects and vegetation photoprotection dynamics. First, we studied how an incorrect characterization of the at-target incoming radiance translated into an erroneous vegetation reflectance spectrum and consequently in an incorrect quantification of reflectance indices such as PRI. The erroneous characterization of the at-target incoming radiance translated into a 2% overestimation and a 31% underestimation of estimated chlorophyll content and PRI-related vegetation indexes, respectively. Second, we investigated the dynamic xanthophyll pool and intrinsic Chl vs. Car long-term pool changes affecting the entire 500-600 nm spectral region. Consistent spectral behaviors were observed for leaf and canopy experiments. Sun-adapted plants showed a larger optical change in the PRI range and a higher capacity for photoprotection during the light transient time when compared to shade-adapted plants. Outcomes of this work highlight the importance of well-established spectroscopy sampling protocols to detect the subtle photochemical features which need to be disentangled from the structural and biological effects.
dc.language.iso	eng
dc.relation.ispartof	Remote Sensing, 2022, vol. 14, num. 1, p. 56
dc.subject	Ciències de la terra
dc.title	Impact of Structural, Photochemical and Instrumental Effects on Leaf and Canopy Reflectance Variability in the 500-600 nm Range
dc.type	journal article
dc.date.updated	2023-06-29T14:39:59Z
dc.identifier.doi	10.3390/rs14010056
dc.identifier.idgrec	160693
dc.rights.accessRights	open access