{"id":"moore-2010-eq18","source":{"id":"moore-2010","citation":"Moore, J. R. (2010). Allometric equations to predict the total above-ground biomass of radiata pine trees. Annals of Forest Science, 67(8), 806.","title":"Allometric equations to predict the total above-ground biomass of radiata pine trees","authors":["Moore, J. R."],"year":2010,"venue":"Annals of Forest Science","doi":"10.1051/forest/2010042","url":"https://doi.org/10.1051/forest/2010042","read_url":"https://hal.science/hal-00883629","access":"open","checked_at":"2026-11-02","status":"current"},"name":"Radiata pine total AGB, weighted arithmetic model Eq. 18","output":{"quantity":"agb"},"expression":"69.4057 + 0.2877 * D^2","published":{"expression":"69.4057 + 0.2877 * D^2","units":{"D":"cm"},"output_unit":"kg"},"taxon":{"level":"species","name":"Pinus radiata","family":"Pinaceae","group":"conifer"},"region":{"scope":"national","countries":["NZ"],"place":"New Zealand (13 studies, mainly North Island)","biomes":["temperate"]},"stand":"plantation","fit":{"n_trees":637,"dbh_min_cm":0.7,"dbh_max_cm":80.6,"h_max_m":42.1,"r2":0.78,"method":"weighted (varPower) mixed-effects model on the arithmetic scale; no back-transformation needed"},"evidence":[{"field":"expression","quote":"AGB = β0 + β1 D2 (18)","locator":"Section 2.2, Eq. 18"},{"field":"expression","quote":"69.4057 | 0.2877","locator":"Table II, row Eq. 18 (parameter estimates)"},{"field":"fit.n_trees","quote":"biomass measurements for 637 individual radiata pine trees from 13 different studies","locator":"Section 2.1"},{"field":"fit.r2","quote":"0.78","locator":"Table II, R2 column, Eq. 18"}],"check":[{"inputs":{"D":10},"expected":98.1757,"origin":"computed","note":"hand-computed from the published form"},{"inputs":{"D":25},"expected":249.2182,"origin":"computed","note":"hand-computed from the published form"},{"inputs":{"D":50},"expected":788.6557,"origin":"computed","note":"hand-computed from the published form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"D in cm, H in m, AGB in kg. Fitted directly on the arithmetic scale, so no correction factor. Fit ranges are the pooled data (Table I overall). Eq. 18 under-predicts large trees according to the paper (Section 3.2)."}