# Pathibang et al. 2026: Allometric Biomass Equation Model of Sonneratia alba in Tanah Merah Mangrove Forest, Kupang, East Nusa Tenggara, Indonesia

Pathibang, M.R., Ora, Y.A.N.R., Almuqu, A.A., et al. (2026). Allometric Biomass Equation Model of Sonneratia alba in Tanah Merah Mangrove Forest, Kupang, East Nusa Tenggara, Indonesia. Jurnal Penelitian Pendidikan IPA, 12(5), 906-915.

- DOI: https://doi.org/10.29303/jppipa.v12i5.15100
- Access: open access
- Copy we read: https://jppipa.unram.ac.id/index.php/jppipa/article/download/15100/10027
- Status: no retraction or correction notice recorded (Crossref is asked weekly); last checked 2026-11-02
- Page: https://treeallometry.org/sources/pathibang-2026/

## Equations from this source (8)

### Sonneratia alba branch biomass, quadratic model (D)

Branch biomass for Sonneratia alba, Indonesia. Inputs: DBH. 8 trees.

As printed (Table 4, Quadratic row):

> Quadratic B = 287.956-36.906D+1.157D^2 70.5% 35.502

Page: https://treeallometry.org/equations/pathibang-2026-branch-quadratic/

### Sonneratia alba leaf biomass, multiple power model (D, H)

Foliage biomass for Sonneratia alba, Indonesia. Inputs: DBH + Height. 8 trees.

As printed (Table 5, Multiple Power row):

> Multiple Power B = 0.000022D^(2.124) H^(2.621) 73.8% 0.717

Page: https://treeallometry.org/equations/pathibang-2026-leaf-multiple-power/

### Sonneratia alba stem biomass, exponential model (D)

Stem biomass for Sonneratia alba, Indonesia. Inputs: DBH. 8 trees.

As printed (Table 3, Exponential row):

> Exponential B = 4.884e^(0.127D) 93.1% 0.193

Page: https://treeallometry.org/equations/pathibang-2026-stem-exponential/

### Sonneratia alba stem biomass, multiple power model (D, H)

Stem biomass for Sonneratia alba, Indonesia. Inputs: DBH + Height. 8 trees.

As printed (Table 3, Multiple Power row):

> Multiple Power B = 0.042D^(2.569)H^(0.162) 97% 0.138

Page: https://treeallometry.org/equations/pathibang-2026-stem-multiple-power/

### Sonneratia alba stem biomass, power model (D)

Stem biomass for Sonneratia alba, Indonesia. Inputs: DBH. 8 trees.

As printed (Table 3, Power row):

> Power B = 0.036D^2.503 96.8% 0.131

Page: https://treeallometry.org/equations/pathibang-2026-stem-power/

### Sonneratia alba total aboveground biomass, exponential model (D)

Aboveground biomass for Sonneratia alba, Indonesia. Inputs: DBH. 8 trees.

As printed (Table 6, Exponential row):

> Exponential B = 5.607e^0.142D 91.6% 0.233

Page: https://treeallometry.org/equations/pathibang-2026-total-exponential/

### Sonneratia alba total aboveground biomass, multiple power model (D, H)

Aboveground biomass for Sonneratia alba, Indonesia. Inputs: DBH + Height. 8 trees.

As printed (Table 6, Multiple Power row):

> Multiple Power B = 0.033D^(2.518) H^0.253 88.5% 0.299

Page: https://treeallometry.org/equations/pathibang-2026-total-multiple-power/

### Sonneratia alba total aboveground biomass, power model (D)

Aboveground biomass for Sonneratia alba, Indonesia. Inputs: DBH. 8 trees.

As printed (Table 6, Power row):

> Power B = 0.049D^2.622 88% 0.279

Page: https://treeallometry.org/equations/pathibang-2026-total-power/