{"id":"de-miguel-2014-lebanon-branch-31","source":{"id":"de-miguel-2014","citation":"de-Miguel, S., Pukkala, T., Assaf, N., & Shater, Z. (2014). Intra-specific differences in allometric equations for aboveground biomass of eastern Mediterranean Pinus brutia. Annals of Forest Science, 71(1), 101-112.","title":"Intra-specific differences in allometric equations for aboveground biomass of eastern Mediterranean Pinus brutia","authors":["de-Miguel, S.","Pukkala, T.","Assaf, N."],"year":2014,"venue":"Annals of Forest Science","doi":"10.1007/s13595-013-0334-4","url":"https://doi.org/10.1007/s13595-013-0334-4","read_url":"https://hal.science/hal-01098388/document","access":"open","license":"Open access copy via HAL (license not stated)","checked_at":"2026-11-02","status":"current"},"name":"Pinus brutia branch biomass, Lebanon (Eq. 31)","output":{"quantity":"branch_biomass"},"expression":"exp(0.625 + 12.203 * D / (D + 30.9) - 0.855 * ln(H))","published":{"expression":"exp(0.625 + 12.203 * D / (D + 30.9) - 0.855 * ln(H))","units":{"D":"cm","H":"m"},"output_unit":"kg"},"taxon":{"level":"species","name":"Pinus brutia","family":"Pinaceae","group":"conifer"},"region":{"scope":"regional","countries":["LB"],"place":"Lebanon (sparse, uneven-aged stands)","biomes":["subtropical","dryland"]},"stand":"natural","fit":{"n_trees":101,"method":"nonlinear generalized least squares on the intrinsically linear form, power variance function (no back-transform correction)"},"evidence":[{"field":"expression","quote":"y = e^(0.625 + 12.203·d/(d + 30.9) − 0.855·ln h)","locator":"Table 3, Lebanon, Eq. 31, p. 105"},{"field":"fit.n_trees","quote":"Lebanon (101 trees)","locator":"Section 2.1, p. 103"}],"check":[{"inputs":{"D":10,"H":8},"expected":6.2382,"origin":"computed","note":"computed from the published form (coefficients as printed)"},{"inputs":{"D":25,"H":14},"expected":45.8841,"origin":"computed","note":"computed from the published form (coefficients as printed)"},{"inputs":{"D":45,"H":25},"expected":165.3131,"origin":"computed","note":"computed from the published form (coefficients as printed)"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Printed residual standard error 0.455 and variance function coefficient δ = 0.953 (model fitted on the original scale, so RSE is not a log-scale value and is not entered as fit.rse). Total aboveground biomass = stem + branches + needles (dry). DBH-only forms are those the authors recommend for tree- and forest-level predictions. Country-specific DBH and height ranges are not printed, so none are entered. Equations using crown length (19, 21) and the crown-biomass equations (23, 24, 33, 34, 43, 44) are not included."}