Poplar Measurement

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Poplars are measured to develop relationships between biomass and allometric values, or to estimate biomass from such relationships. Prior to 1994 woody biomass was divided into stems and branches, here they are combined into the WOOD fraction. The original data is available on request.

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 1989 to January 1998
Dataset: KBS094
Datatable ID: KBS019-007.47
Core Areas Primary Production
Repository link: http://doi.org/10.6073/pasta/11813b609a26b343cced93805b25a98b
Related Tables:
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Last Updated 2020-07-10
Variate Description Units
Year The year of the growing season relevant for the sample
Campaign a major multi-year research activity with a discreet purpose
date date on which sampling occured
treatment main experimental treatment
replicate replicate block, nested within treatment
tree id a designation unique to a particular tree
fraction fraction of the biomass measured
biomass mass of the biomass measured in grams gram
diameter trunk diameters at 15 cm above ground millimeter

Data Excerpt

year campaign date treatment replicate tree_id fraction biomass diameter
1998 Poplar Destructive Sampling 1998-09-03 T5 R1 2 LEAF 285.0 103.63
1998 Poplar Destructive Sampling 1998-09-03 T5 R1 2 WOOD 7490.0 103.63
1998 Poplar Destructive Sampling 1998-09-03 T5 R1 1 WOOD 11035.0 118.42
1998 Poplar Destructive Sampling 1998-09-03 T5 R1 1 LEAF 505.0 118.42
1998 Poplar Destructive Sampling 1998-09-03 T5 R2 3 LEAF 230.0 90.34
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