Articles | Volume 18, issue 22
https://doi.org/10.5194/bg-18-6077-2021
https://doi.org/10.5194/bg-18-6077-2021
Research article
 | 
25 Nov 2021
Research article |  | 25 Nov 2021

Unveiling spatial and temporal heterogeneity of a tropical forest canopy using high-resolution NIRv, FCVI, and NIRvrad from UAS observations

Trina Merrick, Stephanie Pau, Matteo Detto, Eben N. Broadbent, Stephanie A. Bohlman, Christopher J. Still, and Angelica M. Almeyda Zambrano

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Cited articles

Alonso, L., Moreno, J., Moya, I., and Miller, J. R.: A comparison of different techniques for passive measurement of vegetation photosynthetic activity: solar-induced fluorescence, red-edge reflectance structure and photochemical reflectance indices, in: IGARSS 2003, 2003 IEEE International Geoscience and Remote Sensing Symposium, Proceedings IEEE, 1, 604–606, 2003. 
Alonso, L., Gómez-Chova, L., Vila-Francés, J., Amorós-López, J., Guanter, L., Calpe, J., and Moreno, J.: Sensitivity analysis of the Fraunhofer Line Discrimination method for the measurement of chlorophyll fluorescence using a field spectroradiometer, in: 2007 IEEE International Geoscience and Remote Sensing Symposium, IEEE, 3756–3759, 2007. 
Alonso, L., Gómez-Chova, L., Vila-Francés, J., Amorós-López, J., Guanter, L., Calpe, J., and Moreno, J.: Improved Fraunhofer Line Discrimination Method for Vegetation Fluorescence Quantification, IEEE Geosci. Remote Sens. Lett., 5, 620–624, 2008. 
Badgley, G., Field, C. B., and Berry, J. A.: Canopy near-infrared reflectance and terrestrial photosynthesis, Sci. Adv., 3, e1602244, https://doi.org/10.1126/sciadv.1602244, 2017. 
Badgley, G., Anderegg, L. D. L., Berry, J. A., and Field, C. B.: Terrestrial gross primary production: Using NIRV to scale from site to globe, Glob. Change Biol., 25, 3731–3740, https://doi.org/10.1111/gcb.14729, 2019. 
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Short summary
Remote sensing measurements of forest structure promise to improve monitoring of tropical forest health. We investigated drone-based vegetation measurements' abilities to capture different structural and functional elements of a tropical forest. We found that emerging vegetation indices captured greater variability than traditional indices and one new index trends with daily change in carbon flux. These new tools can help improve understanding of tropical forest structure and function.
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