Equations / Stem biomass
Cryptomeria japonica Low-density stand stem (wood + bark) (log10, Table 4)
Stem biomassCryptomeria japonica · CupressaceaeSouth KoreaplantationRead from the original paper
© Marco Mussita · CC BY · iNaturalistEquation
As printed (Materials and Methods 2)
log10Y=a+blog10X [Y = dry weight (kg); X: DBH (cm)]
In this library's units, ready to compute (kg)
Stem biomass = 10^(-1.0397 + 2.1769 * log10(D))D- Diameter at breast height (1.3 m), cm
log10(Y) = a + b*log10(X); the paper prints no correction factor, so none is applied. Stand-specific (low density), n = 5 trees. Sample-tree DBH range is not printed, so none is given.
Source
doi:10.14578/jkfs.2014.103.2.175 · Open access · copy we read
Low density: Stem (kg) -1.0397 2.1769 0.92 0.042
5본을 선정하였다
- Trees measured
- 5
- R²
- 0.92
- Method
- log10-log10 least-squares regression (SAS Proc Reg)
- Where
- Samdong-myeon, Namhae-gun, Gyeongsangnam-do, South Korea
- Last checked
- 2026-11-02
Calculate
62.02
Stem biomass (kg)
29.15
Carbon (kg), ×0.47
106.9
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 | 62 | 62 | Computed from the printed form computed from the Table 4 coefficients |
| D = 35 | 209.7 | 209.7 | Computed from the printed form computed from the Table 4 coefficients |
Related
- Cryptomeria japonica Generalized stem bark (log10, Table 4) · Gwon et al. 2014 · DBH
- Cryptomeria japonica Generalized stem wood (log10, Table 4) · Gwon et al. 2014 · DBH
- Cryptomeria japonica Generalized stem (wood + bark) (log10, Table 4) · Gwon et al. 2014 · DBH
- Cryptomeria japonica High-density stand stem (wood + bark) (log10, Table 4) · Gwon et al. 2014 · DBH
- Cryptomeria japonica Stem (wood + bark) from DBH (Table 3) · Jung et al. 2014 · DBH
- Cryptomeria japonica Generalized aboveground total (log10, Table 4) · same paper · Aboveground biomass
- Cryptomeria japonica Generalized branch (log10, Table 4) · same paper · Branch biomass
- Cryptomeria japonica Generalized foliage (log10, Table 4) · same paper · Foliage biomass
- Cryptomeria japonica Generalized stem bark (log10, Table 4) · same paper · Stem biomass
- Cryptomeria japonica Generalized stem wood (log10, Table 4) · same paper · Stem biomass
- Cryptomeria japonica Generalized stem (wood + bark) (log10, Table 4) · same paper · Stem biomass
- Cryptomeria japonica High-density stand aboveground total (log10, Table 4) · same paper · Aboveground biomass
- Cryptomeria japonica High-density stand stem (wood + bark) (log10, Table 4) · same paper · Stem biomass