Maytenus rigida / Aboveground biomass
Maytenus rigida, total aerial dry biomass from ground-level diameter and height (Table 2)
As printed (Table 2, p. 360)
In this library's units, ready to compute (kg)
Aboveground biomass = -125.773 + 30.7247 * DRC + 43.1044 * H + 1.60801 * DRC^2 - 10.2886 * DRC * H + 0.577549 * DRC^2 * HDRC- Root collar / stem base diameter, cm
H- Total tree height, m
Table 2 prints R2 as a percentage. D is diameter at ground level (DAS, 'diâmetro ao nível do solo', cm), mapped to DRC; H is total height in m; MS is dry mass in kg (Table 2 footnote). 'DH' and 'DH2' are read as D*H and D*H^2, and 'D2H' as D^2*H (variables listed on p. 358 as DAS*H, DAS*H2, DAS2*H). Total aerial dry biomass (leaves, branches, trunk). Diameter range of the sampled trees printed as 5 a 15 cm (ground-level diameter, so not entered as a DBH range): use inside that range. Equations were also fitted by diameter class for all species pooled (Table 3); those are not included here.
doi:10.4336/2013.pfb.33.76.579 · Open access · copy we read
amostrados 15 indivíduos, sendo três para cada classe de diâmetro, com exceção da espécie Chamaecrista belemii, em que foram amostrados 30 indivíduos
99,6 (R²)
- Trees measured
- 15
- R²
- 0.996
- Method
- regression; model chosen among literature models and Backward/Forward stepwise fits by residual plots, S%, t test and R2
- Where
- Casa Nova and Remanso, northern Bahia, lower-middle São Francisco (caatinga arbustivo-arbórea)
- Last checked
- 2026-11-02
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 |
|---|---|---|---|
| DRC = 6, H = 3 | 123 | 123 | Computed from the printed form hand-computed from the published form (coefficients as printed) |
| DRC = 10, H = 4 | 334 | 334 | Computed from the printed form hand-computed from the published form (coefficients as printed) |
| DRC = 14, H = 5 | 681 | 681 | Computed from the printed form hand-computed from the published form (coefficients as printed) |
Related
- Maytenus rigida, caatinga, DBH · Sampaio & Silva 2005 · DBH
- Maytenus rigida, caatinga, ground-level diameter · Sampaio & Silva 2005 · Root collar diameter
- Byrsonima gardneriana, total aerial dry biomass from ground-level diameter and height (Table 2) · same paper · Aboveground biomass
- Cenostigma macrophyllum, total aerial dry biomass from ground-level diameter (Table 2) · same paper · Aboveground biomass
- Chamaecrista belemii, total aerial dry biomass from ground-level diameter and height (Table 2) · same paper · Aboveground biomass
- Copaifera coriacea, total aerial dry biomass from ground-level diameter (Table 2) · same paper · Aboveground biomass
- Ruprechtia glauca, total aerial dry biomass from ground-level diameter (Table 2) · same paper · Aboveground biomass
- Strychnos rubiginosa, total aerial dry biomass from ground-level diameter (Table 2) · same paper · Aboveground biomass
- Ximenia americana, total aerial dry biomass from ground-level diameter and height (Table 2) · same paper · Aboveground biomass