# Eucalyptus camaldulensis leaf biomass from D²H Foliage biomass equation for Eucalyptus camaldulensis, Thailand, from Ounban et al. 2016. 94 trees, DBH 0.5–19.8 cm. Listed on Tree Allometrics, a free library of tree allometric equations, each quoted from the source that published it. ## Equation As printed in Ounban et al. 2016 (Table 4): > Wl = 0.013(D2H)0.721 Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#equation In this library's units, ready to compute (foliage biomass in kg): ``` Foliage biomass = 0.013 * (D^2*H)^0.721 ``` Inputs: D = Diameter at breast height (1.3 m) (cm); H = Total tree height (m). The source's own form: 0.013 * (D^2*H)^0.721, with D in cm, H in m; output in kg. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#canonical ## What it covers - Output: Foliage biomass, kg - Taxon: Eucalyptus camaldulensis (species), family Myrtaceae; broadleaf - Where: Plantations across Thailand. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#where - Biomes: tropical - Stand: plantation - Trees measured: 94. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#n_trees - DBH range: 0.5–19.8 cm. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#dbh - Height range: 1.7–26 m. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#height - R²: 0.705. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#r2 - Method: Least-squares power regression on untransformed data (weighted data from 12-13 published datasets). Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#method - Verification: read in the original source - Last checked: 2026-11-02. Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#checked_at A missing fit statistic is one the source doesn't state, or that we haven't recorded; it is never estimated. Outside the stated DBH range or region, the equation is an extrapolation. ## Source Ounban, W., Puangchit, L., & Diloksumpun, S. (2016). Development of general biomass allometric equations for Tectona grandis Linn.f. and Eucalyptus camaldulensis Dehnh. plantations in Thailand. Agriculture and Natural Resources, 50(1), 48–53. - DOI: https://doi.org/10.1016/j.anres.2015.08.001 - Access: open access - Copy we read: https://li01.tci-thaijo.org/index.php/anres/article/download/243871/166492 - Every equation from this source: https://treeallometry.org/sources/ounban-2016/ - Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#source ## The facts, in the source's words **Equation** (Table 4): > Wl = 0.013(D2H)0.721 Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#equation **Trees measured** (Methods, Compilation of biomass allometric equations): > 13 datasets with a total of 94 trees were chosen for E. camaldulensis Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#quote-fit-n-trees **Smallest DBH** (Methods, Compilation of biomass allometric equations): > The ranges in the diameters and heights of trees in the dataset were 4.4–41.2 cm and 5.5–31.0 m for T. grandis, and 0.5–19.8 and 1.7–26.0 m for E. camaldulensis Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#quote-fit-dbh-min-cm **method** (Methods, Reconstruction of biomass allometric equations): > Linear regressions of untransformed data were used in the present study because log transformed data introduced a systematic bias Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#quote-fit-method **Note** (Results and discussion, Construction of general allometric equations, p. 51): > general allometric equations for branches and leaves were excluded in the present study—only the stem and total aboveground biomass estimations were reported Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#quote-notes **Our note:** General (multi-site) equation fitted on pooled data compiled from published Thai plantation studies (theses, proceedings, reports), not on new felled trees; validated by the authors on independent harvests. D in cm, H in m, output kg dry weight per tree. AGB is the sum of stem, branches and leaves. Component symbol in the paper: Wl. The paper labels Wb as bark in its tables but as branches in the text, so no branch or bark model is entered. Caution: although Tables 3 and 4 print this leaf model, the authors state that the slope of the branch and leaf components differed significantly among spacings (ANCOVA) and that "general allometric equations for branches and leaves were excluded in the present study—only the stem and total aboveground biomass estimations were reported" (Results and discussion, Construction of general allometric equations). ## Checks this equation passes On every build, the library's form and the source's own form (in its units) must both give these values within 1%. | Inputs | Expected | We get | From | | --- | --- | --- | --- | | D = 8, H = 10 | 1.37 | 1.37 | Computed from the printed form: computed from the published form | | D = 15, H = 18 | 5.19 | 5.19 | Computed from the printed form: computed from the published form | Cite: https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/#checks The calculator on the page shows carbon as biomass × 0.47 (IPCC 2006 Guidelines, Vol. 4, Ch. 4, Table 4.3) and CO₂e as carbon × 44/12. ## How to cite Cite the source for the equation: Ounban, W., Puangchit, L., & Diloksumpun, S. (2016). Development of general biomass allometric equations for Tectona grandis Linn.f. and Eucalyptus camaldulensis Dehnh. plantations in Thailand. Agriculture and Natural Resources, 50(1), 48–53. https://doi.org/10.1016/j.anres.2015.08.001 Cite this page for the record and checks: Tree Allometrics (Restoration Scope), "Eucalyptus camaldulensis leaf biomass from D²H", checked 2026-11-02, https://treeallometry.org/equations/ounban-2016-euca-leaf-d2h/. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Quotes are the authors' words. Data for this equation: https://treeallometry.org/data/equations/ounban-2016-euca-leaf-d2h.json Report a problem: email info@restorationscope.com with the equation id (ounban-2016-euca-leaf-d2h) and where the right value appears.