Eucalyptus pellita: Growth, Allometry and Carbon Potential

Updated 2026-11-02 · 4 min read · By the akar.earth specialist team

Eucalyptus pellita carbon sequestration in Indonesia: range, pulp rotations, wood density, allometry, ARR suitability, water, fire and monoculture risks.

Eucalyptus pellita sequesters carbon quickly and has relatively dense wood for a fast-growing plantation tree, so it accumulates biomass efficiently in short pulp rotations. For carbon crediting, those short rotations, its use in large monocultures, and questions about water use and biodiversity limit its role.

Identity and range

Eucalyptus pellita is in the myrtle family, Myrtaceae. It is called red mahogany or large-fruited red mahogany in Australia; in Indonesia it is usually just ekaliptus or pellita. Plantation stock is often improved seed orchard material or hybrids with other eucalypts.

The species is native to southern Papua (Indonesia), Papua New Guinea and northern Queensland. That makes it one of the few eucalypts native to Indonesia, although only in the far east. Plantations in Sumatra and Kalimantan, such as industrial pulp estates in Riau and East Kalimantan, are outside its natural range.

Growth habit and rotation

E. pellita is a straight-stemmed, evergreen tree that needs full light. It tolerates the humid tropics and acid mineral soils better than most eucalypts and is more resistant to the root rot that hit Acacia mangium. That disease tolerance is the main reason Indonesian pulp growers shifted to it on mineral soils.

Pulpwood rotations are short, commonly around 5 to 7 years. Reported growth rates are high but vary widely with genetics, fertiliser use and site. We do not state a single mean annual increment; use local data.

Wood density and biomass estimation

Reported basic density for E. pellita is roughly 0.55 to 0.75 g/cm³. That is higher than acacia or sengon, so each cubic metre of stem stores more carbon. Wood density varies with age, site and clone, and young pulp trees often sit lower.

Above-ground biomass is usually estimated with Chave et al. 2014:

AGB (kg) = 0.0673 × (ρ × D² × H)^0.976

with ρ in g/cm³, D (DBH) in cm and H in m. Species-specific and genus-level eucalypt equations exist from plantations in Australia, Asia, Brazil and Africa. Use them only within their data range. Eucalypt plantations are usually measured with height because height varies a lot between clones and sites. See our allometric equations guide.

Convert biomass to carbon with 0.47 (IPCC default), then to CO2 with 44/12. Add roots with a root-to-shoot ratio.

Carbon role in ARR and agroforestry

E. pellita is primarily a pulp crop. Its role in carbon projects is limited:

• In ARR projects, short rotations mean creditable stock under VM0047 is capped at the long-term average across the rotation, which is modest.
• Some standards and buyers exclude or discount exotic monocultures and may ask for an environmental and social risk assessment.
• It can be part of a mixed landscape where plantation revenue funds the restoration of conservation areas, but the carbon credits then usually come from the restored natural forest, not the eucalyptus.

Co-benefits and livelihoods

Pulp plantations create rural jobs and outgrower income. Eucalyptus leaves can be distilled for oil. As a smallholder crop it gives a short cash cycle, but smallholders depend on a mill buyer, which concentrates market power.

Risks and cautions

• Monoculture and biodiversity. Large clonal blocks support little biodiversity and spread pests and disease fast. See agroforestry vs monoculture.
• Water. Fast-growing eucalypts use a lot of water. In seasonally dry areas this can affect streams and wells.
• Fire. Eucalypt litter and bark are flammable, and plantations on drained land carry fire risk.
• Diseases and pests. Leaf blights, cankers and bacterial wilt have affected eucalypt plantations in the region.
• Invasiveness. E. pellita is not usually ranked among the most invasive eucalypts, but it is exotic outside Papua and should not be planted next to natural habitat.
• EUDR. Pulp and paper products fall under EUDR wood rules, which need plot geolocation and legality evidence.

Planning notes for project developers

• Separate plantation and restoration areas. In mixed estates, map pulp blocks and conservation set-asides as distinct strata; credits usually come from the set-asides.
• Use buffer zones. Native riparian buffers protect streams from plantation water use and runoff.
• Check buyer policies. Some buyers avoid credits linked to exotic pulp plantations even when rules allow them.

Worked example

A pellita tree at harvest with DBH 18 cm, height 20 m and wood density 0.62 g/cm³:

1. ρ × D² × H = 0.62 × 324 × 20 = 4,018
2. AGB = 0.0673 × 4,018^0.976 ≈ 222 kg
3. Carbon = 222 × 0.47 ≈ 104 kg C
4. CO2e = 104 × 44/12 ≈ 382 kg CO2e (above-ground only)

Compare it with acacia or sengon using the tree CO2 calculator.