Contribution of chlorophyll fluorescence to the reflectance of corn foliage

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https://ieeexplore.ieee.org/document/1026771

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https://doi.org/10.1109/IGARSS.2002.1026771
 http://hdl.handle.net/11603/28664

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UMBC Joint Center for Earth Systems Technology (JCET)
UMBC Geography and Environmental Systems Department
UMBC GESTAR II

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https://orcid.org/0000-0002-0505-4951

Date

2005-08-08

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conference papers and proceedings
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Citation of Original Publication

P. K. E. Campbell et al., "Contribution of chlorophyll fluorescence to the reflectance of corn foliage," IEEE International Geoscience and Remote Sensing Symposium, Toronto, ON, Canada, 2002, pp. 2775-2777 vol.5, doi: 10.1109/IGARSS.2002.1026771.

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

To assess the contribution of chlorophyll fluorescence (ChlF) to apparent reflectance (Ra) in the red/far-red, spectra were collected on a C/sub 4/ agricultural species (corn, Zea mays L.) under conditions ranging from nitrogen deficiency to excess. A significant contribution of ChlF to Ra was observed, with on average 10-25% at 685nm and 2-6% at 740nm of Ra being due to ChlF. Higher ChlF was consistently measured from the abaxial leaf surface as compared to the adaxial. Using 350-665nm excitation, the study confirms the trends in three ChlF ratios established previously by active F technology, suggesting that the ChlF utility this technology has developed for monitoring vegetation physiological status is likely applicable also under natural solar illumination.