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Contribution of Chlorophyll Fluorescence to the Reflectance of Corn FoliageTo assess the contribution of chlorophyll fluorescence (ChlF) to apparent reflectance (Ra) in the red/far-red, spectra were collected on a C4 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.
Document ID
20020080899
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Campbell, Petya K. Entcheva
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Middleton, Elizabeth M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Corp, L. A.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
McMurtrey, J. E.
(Agricultural Research Service Beltsville, MD United States)
Kim, M. S.
(Agricultural Research Service Beltsville, MD United States)
Chappelle, E. W.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Butcher, L. M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Ranson, K. Jon
Date Acquired
August 20, 2013
Publication Date
January 1, 2002
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: International Geoscience and Remote Sensing Symposium
Location: Toronto
Country: Canada
Start Date: June 24, 2002
End Date: June 28, 2002
Funding Number(s)
CONTRACT_GRANT: NAS/NRC Order 003790
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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