Species / Oleaceae
Fraxinus nigra
23 equations apply to this species, 13 fitted on it directly. Each output lists them most specific first: fitted on this species, then on a variety of it, then pooled fits that included it, then its genus and its family. Within each step, equations the authors advised against go last, then those read from compilations; more trees come first.
Wood density 0.53 g/cm³, estimated from 19 samples in 4 studies by the Global Wood Density Database v.2 (Fischer et al. 2026, CC BY 4.0).
Aboveground biomass
Fitted on this species · 73 trees · DBH 2–43.1 cm · Read from the original paper
Fitted on this species · 44 trees · DBH 3.56–33.02 cm · Read from the original paper
- NSVB black ash, species-level (all ecodivisions): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States44 treeswithout leaves
Pooled fit on 2 named species and others, this one included · Number of trees not stated · DBH 3–43 cm · Read from the original paper
- North American taxa group: Oleaceae < 0.55 spg (Table 5)DBHUnited States
Fitted on the genus Fraxinus · 234–271 trees across all species · DBH 2.54–59.69 cm · Read from the original paper
- NSVB ash spp., species-level (all ecodivisions): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States271 treeswithout leaves
- NSVB ash spp., Subtropical Division (230): total aboveground biomass (without foliage), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States234 treeswithout leaves
Stem biomass
Fitted on this species · 73 trees · DBH 2–43.1 cm · Read from the original paper
- Canadian national equation, black ash, dbh and height (stem wood plus stem bark; Table 4)DBH + HeightCanada73 trees
- Canadian national equation, black ash, dbh only (stem wood plus stem bark; Table 3)DBHCanada73 trees
Branch biomass
Fitted on this species · 73 trees · DBH 2–43.1 cm · Read from the original paper
- Canadian national equation, black ash, dbh only (branches; Table 3)DBHCanada73 trees
- Canadian national equation, black ash, dbh and height (branches; Table 4)DBH + HeightCanada73 trees
Fitted on this species · 44 trees · DBH 3.56–33.02 cm · Read from the original paper
- NSVB black ash, species-level (all ecodivisions): branch biomass (wood and bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States44 trees
Fitted on the genus Fraxinus · 235–273 trees across all species · DBH 2.54–65.02 cm · Read from the original paper
- NSVB ash spp., species-level (all ecodivisions): branch biomass (wood and bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States273 trees
- NSVB ash spp., Subtropical Division (230): branch biomass (wood and bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States235 trees
Foliage biomass
Fitted on this species · 73 trees · DBH 2–43.1 cm · Read from the original paper
- Canadian national equation, black ash, dbh and height (foliage; Table 4)DBH + HeightCanada73 trees
- Canadian national equation, black ash, dbh only (foliage; Table 3)DBHCanada73 trees
Fitted on this species · 44 trees · DBH 3.56–33.02 cm · Read from the original paper
- NSVB black ash, species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1)DBH + HeightUnited States44 trees
Fitted on the genus Fraxinus · 234–274 trees across all species · DBH 2.54–59.69 cm · Read from the original paper
- NSVB ash spp., species-level (all ecodivisions): foliage biomass, Schumacher-Hall model (Eq. 1)DBH + HeightUnited States274 trees
- NSVB ash spp., Subtropical Division (230): foliage biomass, Schumacher-Hall model (Eq. 1)DBH + HeightUnited States234 trees
Stem volume
Fitted on this species · 86–116 trees · DBH 3.56–78.23 cm · Read from the original paper
- NSVB black ash, species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States116 trees
- NSVB black ash, Warm Continental Division (210): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States86 trees
Fitted on the genus Fraxinus · 91–597 trees across all species · DBH 2.54–70.61 cm · Read from the original paper
- NSVB ash spp., species-level (all ecodivisions): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States597 trees
- NSVB ash spp., Subtropical Division (230): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States470 trees
- NSVB ash spp., Hot Continental Regime Mountains (M220): total stem wood volume (inside bark), Schumacher-Hall model (Eq. 1)DBH + HeightUnited States91 trees