Tree Allometrics

Pinus sylvestris / Foliage biomass

Mongolian pine (Pinus sylvestris var. mongolica) foliage biomass from D and H (System 2, Table 4)

Foliage biomassPinus sylvestris var. mongolica · PinaceaeChinaplantationRead from the original paper
Photo of Pinus sylvestris var. mongolica
© Douglas Goldman · CC BY-SA · iNaturalist
Equation

As printed (Eqs. (2) and Table 4)

lnWf = a* + b* × lnD + c* × lnH; Table 4, Mongolian pine, System 2 (D and H): Foliage | -3.9908 | 2.5358 | -0.5262

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

Foliage biomass = exp(-3.9908 + 2.5358 * ln(D) - 0.5262 * ln(H))
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Mongolian pine (Pinus sylvestris var. mongolica) plantations, System 2 (D and H) of Table 4: ln W = a* + b* ln D + c* ln H, natural logarithm, coefficients as printed (a*, b*, c*). No correction factor is stated in the paper, none applied. n and D/H ranges from Table 2 (sample statistics of the fitted trees). Stem includes bark; roots exclude fine roots <5 mm. No R2 recorded (adjusted R2 only).

Source
a total of 114 Korean pine trees, 90 larch trees, and 85 Mongolian pine trees were destructively sampled
Trees measured · Section 2.2
Trees measured
85
DBH range
6–38.7 cm
Height range
3.5–22.3 m
Method
seemingly unrelated regression (SUR) on log-transformed additive system, ln W = a + b ln D + c ln H
Where
Pure plantations, northeast China
Last checked
2026-11-02
Calculate
Height from
1.86
Foliage biomass (kg)
0.872
Carbon (kg), ×0.47
3.2
CO₂e (kg), ×44/12
Fitted DBH range01020304050607080510152025303540DBH (cm)Foliage biomass (kg)Foliage 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 = 9.3, H = 7.31.861.86Computed from the printed form
computed from the published form (coefficients as printed)
D = 19.1, H = 12.98.538.53Computed from the printed form
computed from the published form (coefficients as printed)
D = 32.2, H = 18.526.526.5Computed from the printed form
computed from the published form (coefficients as printed)

Report a problem with this equation · JSON

Related

Compare these curves