Picea engelmannii / Aboveground biomass
Engelmann spruce total aboveground biomass from DBH and height (Table 4)
Aboveground biomassPicea engelmannii · PinaceaeUnited StatesmixedRead from the original paper
© Sam Beaumont · CC BY · iNaturalistEquation
As printed (Table 4, species row and table note)
Engelmann spruce a, b, c, d, CF: −2.6483 1.4762 1.1357 CF 1.0000; model form exp(a + bX1 + cX2)
In this library's units, ready to compute (kg)
Aboveground biomass = exp(-2.6483 + 1.4762 * ln(D) + 1.1357 * 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
Engelmann spruce ... n 74
Engelmann spruce DBH min 0.7 max 57.6; HT min 1.5 max 40.8
- Trees measured
- 74
- DBH range
- 0.7–57.6 cm
- Height range
- 1.5–40.8 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
128
Aboveground biomass (kg)
60
Carbon (kg), ×0.47
220
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 | 128 | 128 | Computed from the printed form computed from the Table 4 coefficients |
| D = 40, H = 25 | 635 | 635 | Computed from the printed form computed from the Table 4 coefficients |
Related
- Norway spruce, Czech Republic: Total aboveground biomass from D and H/D (Table 2) · Čihák & Vejpustková 2018 · DBH + Height
- Norway spruce, Czech Republic: Total aboveground biomass from D (Table 2) · Čihák & Vejpustková 2018 · DBH
- European general equation, Picea abies, aboveground, diameter only (Eq. 3) · Forrester et al. 2017 · DBH
- Canadian national equation, black spruce, dbh only (sum of wood, bark, branches, foliage; Table 3) · Lambert et al. 2005 · DBH
- White spruce total aboveground biomass from DBH and height (Table 4) · Poudel et al. 2019 · DBH + Height
- Black spruce total aboveground biomass from DBH and height (Table 4) · Poudel et al. 2019 · DBH + Height
- Sitka spruce total aboveground biomass from DBH and height (Table 4) · Poudel et al. 2019 · DBH + Height
- Norway spruce total above-ground biomass, Model 1c (Eq. 17) · Repola 2009 · 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
- White spruce total aboveground biomass from DBH and height (Table 4) · same paper · Aboveground biomass