Multi-angle remote sensing of forest light use efficiency by observing PRI variation with canopy shadow fraction
Multi-angle remote sensing of forest light use efficiency by observing PRI variation with canopy shadow fraction
We show that observed co-variations at sub-hourly time scales between the photochemical reflectance index (PRI) and canopy light use efficiency (LUE) over a Douglas-fir forest result directly from sub-hourly leaf reflectance changes in a 531Â nm spectral window roughly 50Â nm wide. We conclude then, that over a forest stand we are observing the direct effects of photosynthetic down-regulation on leaf-level reflectance at 531Â nm. Key to our conclusion is our ability to simultaneously measure the LUE and reflectance of the Douglas-fir stand as a function of shadow fraction from the â??hot spot
3201-3211
Hall, Forrest G.
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Hilker, Thomas
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Coops, Nicholas C.
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Lyapustin, Alexei
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Huemmrich, Karl F.
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Middleton, Elizabeth
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Margolis, Hank
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Drolet, Guillaume
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Black, T. Andrew
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July 2008
Hall, Forrest G.
19da6ee8-b54b-4eee-b5b6-e8e3a92f6bcf
Hilker, Thomas
c7fb75b8-320d-49df-84ba-96c9ee523d40
Coops, Nicholas C.
5511e778-fec2-4f54-8708-de65ba5a0992
Lyapustin, Alexei
49921e95-158c-446e-bddc-e49a17320c27
Huemmrich, Karl F.
c5730731-bc52-48a0-a0eb-96801ddff7bf
Middleton, Elizabeth
732869c3-3087-464d-99bf-a35a3034d91d
Margolis, Hank
f86f2c55-4a76-4963-9b70-02bdad26a6bd
Drolet, Guillaume
8f2be437-10e0-4a38-aef0-b3cc5f26c5d4
Black, T. Andrew
f6187e30-d043-4094-b5ef-372c60de403b
Hall, Forrest G., Hilker, Thomas, Coops, Nicholas C., Lyapustin, Alexei, Huemmrich, Karl F., Middleton, Elizabeth, Margolis, Hank, Drolet, Guillaume and Black, T. Andrew
(2008)
Multi-angle remote sensing of forest light use efficiency by observing PRI variation with canopy shadow fraction.
Remote Sensing of Environment, 112 (7), .
(doi:10.1016/j.rse.2008.03.015).
Abstract
We show that observed co-variations at sub-hourly time scales between the photochemical reflectance index (PRI) and canopy light use efficiency (LUE) over a Douglas-fir forest result directly from sub-hourly leaf reflectance changes in a 531Â nm spectral window roughly 50Â nm wide. We conclude then, that over a forest stand we are observing the direct effects of photosynthetic down-regulation on leaf-level reflectance at 531Â nm. Key to our conclusion is our ability to simultaneously measure the LUE and reflectance of the Douglas-fir stand as a function of shadow fraction from the â??hot spot
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Accepted/In Press date: 18 March 2008
Published date: July 2008
Organisations:
Earth Surface Dynamics
Identifiers
Local EPrints ID: 384704
URI: http://eprints.soton.ac.uk/id/eprint/384704
ISSN: 0034-4257
PURE UUID: 9f64163b-fff1-4d47-b0af-1727bf7bf0bd
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Date deposited: 15 Apr 2016 15:57
Last modified: 14 Mar 2024 22:03
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Contributors
Author:
Forrest G. Hall
Author:
Thomas Hilker
Author:
Nicholas C. Coops
Author:
Alexei Lyapustin
Author:
Karl F. Huemmrich
Author:
Elizabeth Middleton
Author:
Hank Margolis
Author:
Guillaume Drolet
Author:
T. Andrew Black
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