Leaf Area Index (LAI)

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Leaf Area Index data from the KBS GLBRC Intenisve Site.

This datatable is part of the KBS GLBRC Annual Net Primary Productivity dataset. This dataset contains the aboveground annual net primary production (ANPP) data on the KBS Great Lakes Bioenergy Research Center (GLBRC) intensive sites and GLBRC scale-up fields. This dataset contains the aboveground annual net primary production (ANPP) data. ANPP 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 October 2017
Dataset:	KBS063
Datatable ID:	kbs063-008.74
Core Areas	Primary Production,Disturbance
Repository link:
Related Tables:	Biomass of the GLBRC Scale-up Fields Above Ground Biomass - Annual Crops Above Ground Biomass of Herbaceous Perennial Crops; treatments 5,6,7,9,10 Poplar - Litter Trap Biomass Poplar - Understory Biomass Poplar - Stem Diameter and Destructive Biomass Poplar Stand Counts Switchgrass Stand Counts Harvest Efficiency Biomass of Herbaceous Perennial crops; treatments 5,6,7,9,10 Harvest Efficiency Biomass of Annual Crops; treatments 1,2,3,4, Plant Population (Stem Counts) Plant Population (Stem Counts) at GLBRC Scale-up Experiment
Personnel:	Stephen Hamilton, lead investigator
Last Updated	2020-07-10

Variate	Description	Units
sample date	measurement date
local time	the local time in the easter time zone. includes eastern standard time and daylight saving time depending on the date.
treatment	experimental treatment
replicate	replicate nested within treatment
direction	plant direction and 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
comments	notes on data row

Protocols
LAI 2000 Plant Canopy Analyzer

GLBRC data is not yet publicly available.

Data Excerpt

sample_date	local_time	treatment	replicate	direction	lai
2017-10-27 12:52:00 +0000	2017-10-27 08:52:00 UTC	G8	R1	EP3	0.39
2017-10-27 12:51:00 +0000	2017-10-27 08:51:00 UTC	G8	R1	EP1	0.67
2017-10-27 12:51:00 +0000	2017-10-27 08:51:00 UTC	G8	R1	EP2	0.72
2017-10-27 12:50:00 +0000	2017-10-27 08:50:00 UTC	G8	R1	WP3	0.79
2017-10-27 12:48:00 +0000	2017-10-27 08:48:00 UTC	G8	R1	WP2	0.79

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