{"id":"ounban-2016-euca-agb-d2h","source":{"id":"ounban-2016","citation":"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.","title":"Development of general biomass allometric equations for Tectona grandis Linn.f. and Eucalyptus camaldulensis Dehnh. plantations in Thailand","authors":["Ounban, W.","Puangchit, L.","Diloksumpun, S."],"year":2016,"venue":"Agriculture and Natural Resources","doi":"10.1016/j.anres.2015.08.001","url":"https://doi.org/10.1016/j.anres.2015.08.001","read_url":"https://li01.tci-thaijo.org/index.php/anres/article/download/243871/166492","access":"open","license":"CC BY-NC-ND 4.0","checked_at":"2026-11-02","status":"current"},"name":"Eucalyptus camaldulensis AGB from D²H","output":{"quantity":"agb"},"expression":"0.035 * (D^2*H)^0.953","published":{"expression":"0.035 * (D^2*H)^0.953","units":{"D":"cm","H":"m"},"output_unit":"kg"},"taxon":{"level":"species","name":"Eucalyptus camaldulensis","family":"Myrtaceae","group":"broadleaf"},"region":{"scope":"national","countries":["TH"],"place":"Plantations across Thailand","biomes":["tropical"]},"stand":"plantation","fit":{"n_trees":94,"dbh_min_cm":0.5,"dbh_max_cm":19.8,"h_min_m":1.7,"h_max_m":26,"r2":0.982,"method":"Least-squares power regression on untransformed data (weighted data from 12-13 published datasets)"},"evidence":[{"field":"expression","quote":"AGB = 0.035(D2H)0.953","locator":"Table 4"},{"field":"fit.n_trees","quote":"13 datasets with a total of 94 trees were chosen for E. camaldulensis","locator":"Methods, Compilation of biomass allometric equations"},{"field":"fit.dbh_min_cm","quote":"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","locator":"Methods, Compilation of biomass allometric equations"},{"field":"fit.method","quote":"Linear regressions of untransformed data were used in the present study because log transformed data introduced a systematic bias","locator":"Methods, Reconstruction of biomass allometric equations"}],"check":[{"inputs":{"D":8,"H":10},"expected":16.5332,"origin":"computed","note":"computed from the published form"},{"inputs":{"D":15,"H":18},"expected":95.934,"origin":"computed","note":"computed from the published form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"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. The abstract prints this model as AGB = 0.033(D2H)0.959, while Table 4 and Table 6 print 0.035(D2H)0.953; the table values are used here."}