Coppiced Poplar Stem Biomass — Main Cropping System Experiment (MCSE)

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Length, diameter, and biomass of individual stems (main vertical axes) from regrowth of coppiced poplars (T5, growth after first harvest in 1999 of trees planted in 1989); coppiced trees often produced multiple stems per tree. Trees were destructively harvested; the stems were separated, their length and diameter measured, and their axillary branches removed before weighing individually. Branches were compiled by tree and weighed; see Related Tables for branch biomass of coppiced poplars.

This datatable is part of the Primary Production of the Poplar Treatment of the Main Cropping System Experiment dataset.

This dataset contains allometric and areal biomass data for the Poplar treatment (T5) of the Main Cropping System Experiment (MCSE) at the LTER Main Site. The Poplar treatment is managed as a short-rotation woody biomass system on an approximate 10-year rotation cycle with replanting or coppicing after harvest. Rotations are as follows:

First: planted in April 1989 with stem cuttings of Populus nigra x P. deltoids hybrid at a stocking density of 1 tree per 2 square meter, harvested in February 1999.
Second: trees allowed to coppice after 1999 harvest, coppicing produced multiple stems per tree, coppiced regrowth harvested in January 2008.
Third: planted in May 2009, after a fallow year, with stem cuttings of Populus nigra x P. maximowiczii at a density of 1 tree per 3.6 square meter, harvested in February 2018.
Fourth: planted in June 2019, after a fallow year, with stem cuttings of Populus nigra x P. maximowiczii at a density of 1 tree per 3.6 square meter.

For further information on poplar management, search the KBS Aglog.

Note

Experiment:	Main Cropping System Experiment (MCSE)
Data available from:	September 1999 to December 2003
Dataset:	KBS094
Datatable ID:	KBS019-011.86
Core Areas	Primary Production
Repository link:	http://doi.org/10.6073/pasta/11813b609a26b343cced93805b25a98b
Related Tables:	Poplar Biomass – Allometric Development Poplar Yield Poplar Tree Biomass (Direct Measurement and Allometry) Coppiced Poplar Branch Biomass Coppice Poplar Branch and Stem Biomass Poplar Stem Biomass (Direct Measurement and Allometry) Poplar (T5) Leaf Litter Biomass
Personnel:	Dick Harwood, original investigator Stacey VanderWulp, principal contact Phil Robertson, original investigator Nick Haddad, lead investigator
Last Updated	2024-03-18

Variate	Description	Units
Year	The sample year
Campaign	a major multi-year research activity with a discreet purpose
Date	date on which sampling occurred
Treatment	main experimental treatment
Replicate	replicate block, nested within treatment
Tree ID	A position code in the form x,y where x is column number starting from the west and y is row number starting from the south.
Stem ID	A number assigned to each stem comprising a given tree.
Diameter	diameter at 15 cm above the ground.	mm
Length	length of the stem or banch	mm
Biomass	dry weight of the stem or branch
comments	comments about the observation

Protocols

Download complete data table The standard data use policy applies to the this dataset

Data Excerpt

year	campaign	date	treatment	replicate	tree_id	stem_id	diameter	length	biomass
1999	Poplar Destructive Sampling	1999-09-10	T5	R1	E50	1	1.86	201.4	103.44
1999	Poplar Destructive Sampling	1999-09-10	T5	R1	E50	2	1.77	197.3	95.67
1999	Poplar Destructive Sampling	1999-09-10	T5	R1	E50	3	1.6	180.4	70.51
1999	Poplar Destructive Sampling	1999-09-10	T5	R1	E50	4	0.86	91.7	16.04
1999	Poplar Destructive Sampling	1999-09-10	T5	R1	E50	5	0.57	76.1	6.86

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