Tree Allometrics

Quercus cerris / Aboveground biomass

Quercus cerris AGB, Zerqan site (DBH and height, Table 6)

Aboveground biomassQuercus cerris · FagaceaeAlbanianaturalRead from the original paper
Photo of Quercus cerris
Stephen James McWilliam · CC0 · iNaturalist
Equation

As printed (Table 6, Zerqan row, total aboveground dry weight)

DW = –3.56 + 0.69 • DBH + 1.49 • H

In this library's units, ready to compute (kg)

Aboveground biomass = -3.56 + 0.69 * D + 1.49 * H
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Young Q. cerris coppice stand at Zerqan, Albania; whole-tree dry weight DW is the sum of stem, branches and leaves (roots not studied). Site-specific equation fitted on the 8-12 sampled trees of that site; 2.5-14.0 cm DBH and 2.2-10.5 m height are the sampled-tree ranges (Table 3). Fit by regression without transformation, so no correction factor. DBH and H are both in the model; second form of the pair uses DBH squared.

Source
R2 0.96
R² · Table 6, Zerqan row, total aboveground dry weight, R2 column
Zerqan 11
Trees measured · Table 3, Sampled tree number
Trees measured
11
DBH range
2.5–14 cm
Height range
2.2–10.5 m
R²
0.96
Method
linear or nonlinear regression without transformation
Where
Zerqan, Albania (young coppice stand)
Last checked
2026-11-02
Calculate
Height from
11.6
Aboveground biomass (kg)
5.45
Carbon (kg), ×0.47
20
CO₂e (kg), ×44/12
Fitted DBH range05101520253035510152025303540DBH (cm)Aboveground biomass (kg)Aboveground biomass

Shaded: the DBH range the model was fitted on. Other inputs held at the values above.

Checks this equation passes

On every build, the library's form and the paper's own form (in its units) must both give these values within 1%.

InputsExpectedWe getFrom
D = 8.25, H = 6.3511.611.6Computed from the printed form
hand-computed from the published form at the mid-point of the sampled range

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