Poplar - Understory Biomass

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Understory biomass sampled on the poplar treatments (G8) in the Biofuel Cropping System Experiment (BCSE) including cover crop and weed biomass. Cover crops were only sampled in 2008 and 2009. KBS poplar weed biomass was sampled in 2008-2009 and 2012-2013; sampling was discontinued in 2014.

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:	January 2008 to January 2017
Dataset:	KBS063
Datatable ID:	KBS063-007.75
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 Leaf Area Index (LAI) 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:	Phil Robertson, lead investigator Kurt Thelen, investigator
Last Updated	2020-07-10

Variate	Description	Units
year	growing season year
sample date	date sample was collected
site	location of biomass sampling
treatment	experimental treatment
replicate	replicate nested within treatment
station	sampling station
species	biomass crop or weed
fraction	portion of crop harvested
biomass	dry mass of sampled matter	g/m²
comments	sample notes

Protocols
Aboveground Net Primary Productivity- GLBRC Intensive Sites
Aboveground Net Primary Productivity- GLBRC BCSE & Scale-Up Sites

GLBRC data is not yet publicly available.

Data Excerpt

year	sample_date	site	treatment	replicate	station	species	fraction	biomass
2019	2019-04-23	KBS	G8	R1	1	Populus nigra × P. maximowiczii	whole	1064.84
2019	2019-04-23	KBS	G8	R1	2	Populus nigra × P. maximowiczii	whole	371.61
2019	2019-04-23	KBS	G8	R1	3	Populus nigra × P. maximowiczii	whole	32.86
2019	2019-06-06	KBS	G8	R1	1	UnSorted	whole	34.13
2019	2019-06-06	KBS	G8	R1	2	UnSorted	whole	114.24

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