Equations / Aboveground biomass
Quaking aspen total aboveground biomass from DBH and height (Table 4)
Aboveground biomassPopulus tremuloides · SalicaceaeUnited StatesmixedRead from the original paper
© Douglas Goldman · CC BY-SA · iNaturalistEquation
As printed (Table 4, species row and table note)
Quaking aspen a, b, c, d, CF: −3.0439 2.0345 0.642 CF 1.0000; model form exp(a + bX1 + cX2)
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-3.0439 + 2.0345 * ln(D) + 0.642 * ln(H))D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
AGB is total aboveground live-tree biomass (stem, bark, branches, foliage). X1 = ln(DBH), X2 = ln(HT), DBH in cm and HT in m. Species identified from the common name in Table 4 (scientific name added from the standard species symbol). Stand type is not stated. Observed ranges in Table 1 cover all trees of the species used.
Source
doi:10.1139/cjfr-2018-0361 · Open access · copy we read
Quaking aspen ... n 26
Quaking aspen DBH min 6.0 max 34.8; HT min 5.4 max 25.6
- Trees measured
- 26
- DBH range
- 6–34.8 cm
- Height range
- 5.4–25.6 m
- Method
- nonlinear regression, response not log-transformed (CF = 1.0000)
- Where
- Western U.S.A., legacy destructive-sampling biomass collection (Radtke et al. 2015)
- Last checked
- 2026-11-02
Calculate
Height from
120.2
Aboveground biomass (kg)
56.51
Carbon (kg), ×0.47
207.2
CO₂e (kg), ×44/12
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%.
| Inputs | Expected | We get | From |
|---|---|---|---|
| D = 20, H = 15 | 120.2 | 120.2 | Computed from the printed form computed from the Table 4 coefficients |
| D = 40, H = 25 | 683.8 | 683.8 | Computed from the printed form computed from the Table 4 coefficients |
Related
- Poplar aboveground biomass (compatible total-biomass system) · Du et al. 2026 · DBH + Height
- European general equation, Populus, aboveground, diameter only (Eq. 3) · Forrester et al. 2017 · DBH
- Canadian national equation, trembling aspen, dbh only (sum of wood, bark, branches, foliage; Table 3) · Lambert et al. 2005 · DBH
- Black cottonwood total aboveground biomass from DBH and height (Table 4) · Poudel et al. 2019 · DBH + Height
- Pacific silver fir total aboveground biomass from DBH and height (Table 4) · same paper · Aboveground biomass
- White fir total aboveground biomass from DBH (Table 4) · same paper · Aboveground biomass
- Grand fir total aboveground biomass from DBH (Table 4) · same paper · Aboveground biomass
- Subalpine fir total aboveground biomass from DBH and height (Table 4) · same paper · Aboveground biomass
- Red alder total aboveground biomass from DBH and height (Table 4) · same paper · Aboveground biomass
- Paper birch total aboveground biomass from DBH (Table 4) · same paper · Aboveground biomass
- Utah juniper total aboveground biomass from DBH (Table 4) · same paper · Aboveground biomass
- Engelmann spruce total aboveground biomass from DBH and height (Table 4) · same paper · Aboveground biomass