Poplar Biomass Areal via Allometry

Poplars are destructively sampled to estimate biomass. In between the diameter of the poplars is used to estimate the biomass. The following equations were used to convert diameters at 15 cm to tree weight. biomass_g = 10^ (-1.195 + 2.505 * log(diameter)) (before 2008 for the Populus nigra x P. deltoids hybrid) and biomass_g = 10^(-0.713 _ 2.367 * log(diameter)) (after 2008 Populus. nigra x Populs maximowiczii.).

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: September 1989 to November 2015
Dataset: KBS094
Datatable ID: KBS019-009.26
Core Areas Primary Production,Populations,Disturbance
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Last Updated 2017-10-24
Variate Description Units
year 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
variety poplar hybird
biomass g dry weight of the tree gram
square meter per tree how many square meter of ground does one tree occupy squaremeter
biomass g m2 dry mass of the tree per square meter g/m2
flag indicates whether the biomass was measured 'M' or estimated 'E' with the allometric equations

Data Excerpt

year campaign date treatment replicate tree_id variety square_meter_per_tree biomass_g biomass_g_m2 flag
2016 Poplar Measurement 2016-12-08 T5 R1 33, 18 Populus nigra x P. maximowiczii. 3.6 19530 5425 E
2016 Poplar Measurement 2016-12-08 T5 R1 24, 17 Populus nigra x P. maximowiczii. 3.6 22111 6142 E
2016 Poplar Measurement 2016-12-08 T5 R1 24, 14 Populus nigra x P. maximowiczii. 3.6 22495 6249 E
2016 Poplar Measurement 2016-12-08 T5 R1 17, 9 Populus nigra x P. maximowiczii. 3.6 26547 7374 E
2016 Poplar Measurement 2016-12-08 T5 R1 19, 52 Populus nigra x P. maximowiczii. 3.6 36342 10095 E
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