{"id":"huy-2016-shorea-d","source":{"id":"huy-2016","citation":"Huy, B., Poudel, K. P., Kralicek, K., Hung, N. D., Khoa, P. V., Phuong, V. T., & Temesgen, H. (2016). Allometric Equations for Estimating Tree Aboveground Biomass in Tropical Dipterocarp Forests of Vietnam. Forests, 7(8), 180.","title":"Allometric Equations for Estimating Tree Aboveground Biomass in Tropical Dipterocarp Forests of Vietnam","authors":["Huy, B.","Poudel, K. P.","Kralicek, K."],"year":2016,"venue":"Forests","doi":"10.3390/f7080180","url":"https://doi.org/10.3390/f7080180","read_url":"https://www.mdpi.com/1999-4907/7/8/180/htm","access":"open","license":"CC BY 4.0","checked_at":"2026-11-02","status":"current"},"name":"Shorea genus, Vietnam, AGB from D (S1, Eq. 19)","output":{"quantity":"agb"},"expression":"0.07483 * D^2.54496","published":{"expression":"0.07483 * DBH^2.54496","units":{"DBH":"cm"},"variables":{"DBH":"D"},"output_unit":"kg"},"taxon":{"level":"genus","name":"Shorea","family":"Dipterocarpaceae","group":"broadleaf"},"region":{"scope":"regional","countries":["VN"],"place":"Dipterocarp forests, Central Highlands and Southeast ecoregions, Vietnam","biomes":["tropical"]},"stand":"natural","fit":{"n_trees":36,"dbh_min_cm":5.6,"dbh_max_cm":23,"h_min_m":4.4,"h_max_m":14.1,"method":"nonlinear weighted least squares (power variance function)"},"evidence":[{"field":"expression","quote":"Shorea: AGB = 0.07483 × DBH2.54496","locator":"Eq. 19, p. 11"},{"field":"fit.n_trees","quote":"n 36 (Shorea Genus)","locator":"Table 2"}],"check":[{"inputs":{"D":8},"expected":14.873,"origin":"computed","note":"computed from the published form (coefficients as printed)"},{"inputs":{"D":15},"expected":73.651,"origin":"computed","note":"computed from the published form (coefficients as printed)"},{"inputs":{"D":22},"expected":195.2,"origin":"computed","note":"computed from the published form (coefficients as printed)"}],"verification":"original_read","checked_at":"2026-11-02","notes":"AGB is the sum of stem, branch and foliage dry mass. Fitted on the whole dataset with the fixed-effects model; the random ecoregion effect was not retained. No correction factor is stated. The DBH range of the Shorea data stops at 23 cm; do not extrapolate."}