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Remote sensing of photosynthetic light-use efficiency across two forested biomes: Spatial scaling

Remote sensing of photosynthetic light-use efficiency across two forested biomes: Spatial scaling
Remote sensing of photosynthetic light-use efficiency across two forested biomes: Spatial scaling
Eddy covariance (EC) measurements have greatly advanced our knowledge of carbon exchange in terrestrial ecosystems. However, appropriate techniques are required to upscale these spatially discrete findings globally. Satellite remote sensing provides unique opportunities in this respect, but remote sensing of the photosynthetic light-use efficiency ($\epsilon$), one of the key components of Gross Primary Production, is challenging. Some progress has been made in recent years using the photochemical reflectance index, a narrow waveband index centered at 531 and 570nm. The high sensitivity of this index to various extraneous effects such as canopy structure, and the view observer geometry has so far prevented its use at landscape and global scales. One critical aspect of upscaling PRI is the development of generic algorithms to account for structural differences in vegetation. Building on previous work, this study compares the differences in the PRI: É? relationship between a coastal Douglas-fir forest located on Vancouver Island, British Columbia, and a mature Aspen stand located in central Saskatchewan, Canada. Using continuous, tower-based observations acquired from an automated multi-angular spectro-radiometer (AMSPEC II) installed at each site, we demonstrate that PRI can be used to measure
amspec, aspen, canopy height model, carbon cycle, df49, douglas-fir, eddy covariance, gpp, lue, lidar, light-use efficiency, maiac, modis, pri, soa, shadow fraction, spatial scaling, terrestrial carbon cycle
0034-4257
2863-2874
Hilker, Thomas
c7fb75b8-320d-49df-84ba-96c9ee523d40
Hall, Forrest G.
19da6ee8-b54b-4eee-b5b6-e8e3a92f6bcf
Coops, Nicholas C.
5511e778-fec2-4f54-8708-de65ba5a0992
Lyapustin, Alexei
49921e95-158c-446e-bddc-e49a17320c27
Wang, Yujie
6915380d-4c23-4fef-a172-6880ddeff699
Nesic, Zoran
a1581cdb-fcce-497b-ab4d-41d63e70bca2
Grant, Nick
e81cb3ea-0d4a-4a77-b7b7-269a1a54544c
Black, T. Andrew
f6187e30-d043-4094-b5ef-372c60de403b
Wulder, Michael A.
13414360-db3d-4d88-a76d-ccffd69d0084
Kljun, Natascha
610143c5-891e-41db-8715-3aba3d79f77a
Hopkinson, Chris
13eba9ad-a466-4e44-bef9-10ccfab93fd1
Chasmer, Laura
a000d777-e487-42d3-ac7f-682f0bcca688
Hilker, Thomas
c7fb75b8-320d-49df-84ba-96c9ee523d40
Hall, Forrest G.
19da6ee8-b54b-4eee-b5b6-e8e3a92f6bcf
Coops, Nicholas C.
5511e778-fec2-4f54-8708-de65ba5a0992
Lyapustin, Alexei
49921e95-158c-446e-bddc-e49a17320c27
Wang, Yujie
6915380d-4c23-4fef-a172-6880ddeff699
Nesic, Zoran
a1581cdb-fcce-497b-ab4d-41d63e70bca2
Grant, Nick
e81cb3ea-0d4a-4a77-b7b7-269a1a54544c
Black, T. Andrew
f6187e30-d043-4094-b5ef-372c60de403b
Wulder, Michael A.
13414360-db3d-4d88-a76d-ccffd69d0084
Kljun, Natascha
610143c5-891e-41db-8715-3aba3d79f77a
Hopkinson, Chris
13eba9ad-a466-4e44-bef9-10ccfab93fd1
Chasmer, Laura
a000d777-e487-42d3-ac7f-682f0bcca688

Hilker, Thomas, Hall, Forrest G., Coops, Nicholas C., Lyapustin, Alexei, Wang, Yujie, Nesic, Zoran, Grant, Nick, Black, T. Andrew, Wulder, Michael A., Kljun, Natascha, Hopkinson, Chris and Chasmer, Laura (2010) Remote sensing of photosynthetic light-use efficiency across two forested biomes: Spatial scaling. Remote Sensing of Environment, 114 (12), 2863-2874. (doi:10.1016/j.rse.2010.07.004).

Record type: Article

Abstract

Eddy covariance (EC) measurements have greatly advanced our knowledge of carbon exchange in terrestrial ecosystems. However, appropriate techniques are required to upscale these spatially discrete findings globally. Satellite remote sensing provides unique opportunities in this respect, but remote sensing of the photosynthetic light-use efficiency ($\epsilon$), one of the key components of Gross Primary Production, is challenging. Some progress has been made in recent years using the photochemical reflectance index, a narrow waveband index centered at 531 and 570nm. The high sensitivity of this index to various extraneous effects such as canopy structure, and the view observer geometry has so far prevented its use at landscape and global scales. One critical aspect of upscaling PRI is the development of generic algorithms to account for structural differences in vegetation. Building on previous work, this study compares the differences in the PRI: É? relationship between a coastal Douglas-fir forest located on Vancouver Island, British Columbia, and a mature Aspen stand located in central Saskatchewan, Canada. Using continuous, tower-based observations acquired from an automated multi-angular spectro-radiometer (AMSPEC II) installed at each site, we demonstrate that PRI can be used to measure

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More information

Accepted/In Press date: 17 July 2010
e-pub ahead of print date: 30 August 2010
Published date: 15 December 2010
Keywords: amspec, aspen, canopy height model, carbon cycle, df49, douglas-fir, eddy covariance, gpp, lue, lidar, light-use efficiency, maiac, modis, pri, soa, shadow fraction, spatial scaling, terrestrial carbon cycle
Organisations: Earth Surface Dynamics

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Local EPrints ID: 384691
URI: http://eprints.soton.ac.uk/id/eprint/384691
ISSN: 0034-4257
PURE UUID: e8c2765d-53bb-4387-a96f-85198e434588

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Date deposited: 15 Apr 2016 15:33
Last modified: 14 Mar 2024 22:03

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Contributors

Author: Thomas Hilker
Author: Forrest G. Hall
Author: Nicholas C. Coops
Author: Alexei Lyapustin
Author: Yujie Wang
Author: Zoran Nesic
Author: Nick Grant
Author: T. Andrew Black
Author: Michael A. Wulder
Author: Natascha Kljun
Author: Chris Hopkinson
Author: Laura Chasmer

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