GLBRC Sustainability Data Catalog

Leaf Area Index (LAI)

Leaf Area Index data from the KBS GLBRC Intenisve Site

This datatable is part of the GLBRC Annual Net Primary Productivity dataset. This dataset contains the aboveground biomass data. Annual net primary production (ANPP) data is measured at peak biomass for a given treatment. Additional ANPP measurements are made where appropriate such as occasional destructive harvests for poplar. See the ANPP protocols for descriptions of the sampling and measurement methods for each of the treatments. Below ground net primary production (BNPP) are available for these same sites.

Note

Experiment: GLBRC Biofuel Cropping System Experiment
Data available from: June 2009 to November 2016
Dataset: GLBRC082
Datatable ID: GLBRC082-007.57
Related Tables:
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Last Updated 2017-10-24
Variate Description Units
sample date date and time of measurement, the plus sign indicates the time relative to Universal Coordinated Time (UCT).
local time the time in the eastern time zone either standard time or daylight saving time depending on the date.
treatment experimental treatment
replicate replicate nested within treatment
direction direction and plant number
lai leaf area index m^2/m^2
sel standard error of lai m^2/m^2
difn fraction of sky visible number
mta mean tilt angle degree
sem standard error of MTA degree
smp number of sample pairs used number
instrument the instrument used to measure the LAI
comments notes about the data row

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Data Excerpt

sample_date local_time treatment replicate direction lai sel difn mta sem smp instrument comments
2016-11-04 12:28:38+00 2016-11-04 08:28:38 G8 R1 EP1 1.08 LAI AccuPAR LP-80 Ceptometer
2016-11-04 12:28:19+00 2016-11-04 08:28:19 G8 R1 EP2 0.73 LAI AccuPAR LP-80 Ceptometer
2016-11-04 12:27:55+00 2016-11-04 08:27:55 G8 R1 EP3 0.83 LAI AccuPAR LP-80 Ceptometer
2016-11-04 12:26:46+00 2016-11-04 08:26:46 G8 R1 WP1 1.03 LAI AccuPAR LP-80 Ceptometer
2016-11-04 12:26:28+00 2016-11-04 08:26:28 G8 R1 WP2 0.65 LAI AccuPAR LP-80 Ceptometer
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