Pinus resinosa / Aboveground biomass, without leaves
NSVB red pine, Warm Continental Division (210): total aboveground biomass (without foliage), segmented model (Eq. 2), D < 9 in (22.86 cm)
© timmenzies on Flickr · CC BY-SA · iNaturalistAs printed (Table S8a (Table S8a_total_biomass_coefs_spcd.csv, WO-GTR-104-Supp1), columns SPCD,DIVISION,STDORGCD,model,a,a1,b,b1,c,c1)
In this library's units, ready to compute (kg)
Aboveground biomass, without leaves = 0.45359237 * 0.163474811 * (D/2.54)^2.033616764 * (H/0.3048)^0.782544189D- Diameter at breast height (1.3 m), cm
H- Total tree height, m
Output is gross AGB without foliage (AGBPredicted), before NSVB's cull and broken-top reductions and harmonization with components. DBH is measured at 4.5 ft (1.37 m). Paper units: in, ft, lb; expression converts D cm→in (/2.54), H m→ft (/0.3048) and lb→kg (×0.45359237). n and the DBH range are from the scorecard for TT_WDBK_DW_ADJ in 210 (table S19) and cover the whole segmented model; the record's DBH limit at k is the segmentation point. For AGB the scorecard rates NSVB's harmonized total (TT_WDBK_DW_ADJ), not this model alone; only its n and DBH range are used. Lower branch of the segmented model; pair with westfall-2024-pinus-resinosa-210-agb-large.
doi:10.2737/WO-GTR-104 · Open access · copy we read
yi = a × Di^b × Hi^c + εi; Di < k / yi = a × k^(b−b1) × Di^b1 × Hi^c + εi; Di ≥ k
Di is diameter (inches) at breast height (4.5 feet), Hi is total tree height (feet)
units for volume and biomass predictions are cubic feet and pounds, respectively
125,red pine,N,Pinus,resinosa,,,Pinus resinosa
total aboveground biomass (without foliage)
k is a set segmentation point that is 9.0 inches for softwoods (SPCD<300) and 11.0 inches for hardwoods (SPCD≥300)
"Total Tree Wood+Bark","TT_WDBK_DW_ADJ","125","210","WARM_CONTINENTAL_DIVISION",200,9.0525,1.1,26.8
key modeling statistics such as sample sizes (n), tree diameter distributions (minimum, mean, and maximum)
- Trees measured
- 200
- DBH range
- 2.79–22.86 cm
- Method
- NSVB segmented model (Eq. 2), coefficients for SPCD 125 in DIVISION 210 from table S8a; fitted with weighted regression to destructively sampled trees
- Where
- FIA ecodivision Warm Continental Division (210), mapped in GTR fig. 1
- Last checked
- 2026-11-03
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 = 15.2, H = 13.7 | 55.8 | 55.8 | Computed from the printed form computed from the published form at D = 6 in, H = 45 ft, converted to cm, m and kg |
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