Poplar - Understory Biomass — GLBRC Biofuel Cropping System Experiment

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use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 2019
Dataset: KBS063
Datatable ID: KBS063-007.86
Core Areas Primary Production,Disturbance
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Last Updated 2022-09-09
Variate Description Units
year growing season year
sample date date sample was collected
campaign why were the samples taken
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
area sampled the size of the area that was sampled squaremeter
comments sample notes

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Data Excerpt

year sample_date campaign site treatment replicate station species fraction biomass area_sampled weight_g comments
2019 2019-09-18 peak biomass KBS GLBRC Intensive Site G8 R1 EW UnSorted whole 336.6 0.475 159.9
2019 2019-09-18 peak biomass KBS GLBRC Intensive Site G8 R1 EW Surface Litter whole 243.4 0.475 115.63
2019 2019-09-18 peak biomass KBS GLBRC Intensive Site G8 R1 NS Surface Litter whole 139.1 0.475 66.08
2019 2019-09-18 peak biomass KBS GLBRC Intensive Site G8 R1 NS UnSorted whole 252.0 0.475 119.71
2019 2019-04-23 coppice biomass pre-mow KBS GLBRC Intensive Site G8 R1 S1 Populus nigra × P. maximowiczii whole 1064.8 7.0 area estimated 2 trees at a planting density of1149 trees/acre
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