Equations / Branch biomass
Pinus brutia branch biomass, Middle East (Eq. 41)
© Zeynel Cebeci · CC BY-SA · iNaturalistAs printed (Table 3, Middle East, Eq. 41, p. 105)
In this library's units, ready to compute (kg)
Branch biomass = exp(0.113 + 12.79 * D / (D + 23.007) - 1.166 * ln(H))D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Printed residual standard error 0.636 and variance function coefficient δ = 0.874 (model fitted on the original scale, so RSE is not a log-scale value and is not entered as fit.rse). Total aboveground biomass = stem + branches + needles (dry). DBH-only forms are those the authors recommend for tree- and forest-level predictions. Country-specific DBH and height ranges are not printed; the ranges shown are for all 201 trees. Equations using crown length (19, 21) and the crown-biomass equations (23, 24, 33, 34, 43, 44) are not included.
doi:10.1007/s13595-013-0334-4 · Open access · copy we read
201 P. brutia trees
- Trees measured
- 201
- DBH range
- 2.3–55.8 cm
- Height range
- 3.1–32.5 m
- Method
- nonlinear generalized least squares on the intrinsically linear form, power variance function (no back-transform correction)
- Where
- Syria and Lebanon pooled
- Last checked
- 2026-11-02
Shaded: the DBH range the model was fitted on. Other inputs held at the values above.
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 = 10, H = 8 | 4.77 | 4.77 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 25, H = 14 | 40.3 | 40.3 | Computed from the printed form computed from the published form (coefficients as printed) |
| D = 45, H = 25 | 124.3 | 124.3 | Computed from the printed form computed from the published form (coefficients as printed) |
Related
- Branch biomass, Pinus tecunumanii shade trees, power-law DBH+H · Chalupová et al. 2026 · DBH + Height
- Pinus caribaea branch biomass from DBH (simultaneous fit) · Coutinho et al. 2018 · DBH
- Pinus cembroides, additive system S2 (D and H): branch biomass · Cuevas Cruz & Aquino Ramírez 2020 · DBH + Height
- Pinus brutia branch biomass, Lebanon (Eq. 31) · de-Miguel et al. 2014 · DBH + Height
- Pinus brutia branch biomass, Lebanon (Eq. 32) · de-Miguel et al. 2014 · DBH
- Pinus brutia branch biomass, Middle East (Eq. 42) · de-Miguel et al. 2014 · DBH
- Pinus brutia branch biomass, Syria (Eq. 22) · de-Miguel et al. 2014 · DBH
- Korean pine branch biomass from D only (System 1, Table 4) · Dong et al. 2016 · DBH
- Pinus brutia branch biomass, Lebanon (Eq. 31) · same paper · Branch biomass
- Pinus brutia branch biomass, Lebanon (Eq. 32) · same paper · Branch biomass
- Pinus brutia needle biomass, Lebanon (Eq. 29) · same paper · Foliage biomass
- Pinus brutia needle biomass, Lebanon (Eq. 30) · same paper · Foliage biomass
- Pinus brutia stem biomass, Lebanon (Eq. 35) · same paper · Stem biomass
- Pinus brutia stem biomass, Lebanon (Eq. 36) · same paper · Stem biomass
- Pinus brutia total biomass, Lebanon (Eq. 37) · same paper · Aboveground biomass
- Pinus brutia total biomass, Lebanon (Eq. 38) · same paper · Aboveground biomass