Poplar Biomass at Harvest — Main Cropping System Experiment (MCSE)

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Poplar plots are clearcut and biomass is measured, by weighing the biomass harvested. Biomass is the standing crop, or production since last clearcut, in g/m2, based on 9088 m2. However, poplar density is not constant across the plots. The 2007 data are from the S1x2m planting density on the southern half of the plot.

This datatable is part of the Poplar Biomass by Allometric Equations dataset. Poplars are grown as cellulose crop at the Main Cropping System Experiment. The first rotation was planted at a stocking density of 1 tree per 2 square meter. After the first harvest the trees were allowed to coppice. After the second harvest the trees were replanted. The third rotation was planted at 1 tree per 3.6 square meter. For the first two rotations the species planted was Populus nigra x P. deltoids hybrid for the third rotation it is Populus nigra x P. maximowiczii.

Note

Experiment:	Main Cropping System Experiment (MCSE)
Data available from:	January 1998 to January 2017
Dataset:	KBS094
Datatable ID:	KBS019-008.48
Core Areas	Primary Production,Disturbance
Repository link:	http://doi.org/10.6073/pasta/11813b609a26b343cced93805b25a98b
Related Tables:	Poplar Measurement Poplar Biomass Areal via Allometry Coppice Poplar Stem Biomass Coppice Poplar Branch Biomass Coppice Poplar Branch and Stem Biomass Poplar Biomass per Stem via Allometry Poplar Stand Counts Poplar damage assessment
Personnel:	Phil Robertson, lead investigator Dick Harwood, original investigator Stacey VanderWulp, principal contact
Last Updated	2020-07-10

Variate	Description	Units
Year	year of the growing season relevant for the sample
Campaign	major multi-year research activity with a discreet purpose
Begin Date	date of beginning of sampling activity
End Date	last date on which sampling activity occured
Treatment	main experimental treatment
Replicate	replicate block, nested within treatment
Species	five or six letter code representing the species (or taxon) sampled
First Season	year of the first growing season contributing biomass to the sample
Last Season	year of the last growing season contributing biomass to the sample
Biomass	dry mass of sampled material	g/m²

Protocols

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Data Excerpt

year	campaign	begin_date	end_date	treatment	replicate	species	first_season	last_season	biomass
1998	Poplar Harvest	1999-02-17	1999-02-23	T5	R3	POPEU	1989	1998	3233.0
2017	Poplar Harvest	2010-04-19	2018-04-06	T5	R6	POPNXM	2010	2017	3326.0
2017	Poplar Harvest	2010-04-19	2018-03-01	T5	R5	POPNXM	2010	2017	5437.0
1998	Poplar Harvest	1999-01-26	1999-02-08	T5	R1	POPEU	1989	1998	3447.0
2007	Poplar Harvest			T5	R4	POPEU	1999	2007	2554.0

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