LAI (INDIRECT): LIGHT WAND - KSU (FIFE)Entry ID: FIFE_LIGHTWND
Abstract: The prairie is inherently variable and large numbers of samples are needed to obtain reliable estimates of the prairie agronomic characteristics. For the Indirect Leaf Area Index Obtained from the KSU Light Wand Study a limited number of destructive samples were supplemented by large numbers of rapid non-destructive estimates. For the non-destructive measurements the LI-COR Inc. LAI-2000 Plant ... Canopy Analyzer (light-wand) was used. This instrument measures transmittance of the canopy in the blue region of the spectrum, at five different zenith angles. These measurements were inverted to provide estimates of leaf area index, and mean inclination angle of the leaves to the zenith. Verification studies conducted by LI-COR Inc. indicated that the LAI-2000 Canopy Analyzer measurements were generally within 15% of values obtained by destructive sampling and measurement with a leaf area meter. As a rough guess even the destructive measurements are accurate only to within about 25% of the true sample leaf area value. In the opinion of the study team, the non-destructive measurements with the LAI-2000 are as good as the destructive measurements, and provide a better estimate of the site mean, because many more non-destructive measurement can be made.
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Data Set Citation
Dataset Originator/Creator: KANEMASU, E.T.SHAH, T.
Dataset Title: LAI (INDIRECT): LIGHT WAND - KSU (FIFE)
Dataset Release Date: 1994
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/43Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=43&term2attribute...
Start Date: 1988-06-29Stop Date: 1989-10-31
Data Set Progress
Role: TECHNICAL CONTACT
Phone: (404) 228-7272
Email: ekanamasu at griffin.uga.edu
University of Georgia Dept. of Agronomy
Province or State: GA
Postal Code: 30223-1797
Role: DIF AUTHOR
Phone: (865) 574-7447
Email: uso at daac.ornl.gov
ORNL DAAC User Services Office Oak Ridge National Laboratory
City: Oak Ridge
Province or State: TN
Postal Code: 37831-6407
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1994-07-24
Last DIF Revision Date: 2011-04-01