{"id":"zianis-2003-eq5","source":{"id":"zianis-2003","citation":"Zianis, D., & Mencuccini, M. (2003). Aboveground biomass relationships for beech (Fagus moesiaca Cz.) trees in Vermio Mountain, Northern Greece, and generalised equations for Fagus sp. Annals of Forest Science, 60(5), 439–448.","title":"Aboveground biomass relationships for beech (Fagus moesiaca Cz.) trees in Vermio Mountain, Northern Greece, and generalised equations for Fagus sp.","authors":["Zianis, D.","Mencuccini, M."],"year":2003,"type":"journal-article","venue":"Annals of Forest Science","doi":"10.1051/forest:2003036","url":"https://doi.org/10.1051/forest:2003036","read_url":"https://hal.science/hal-00883716/document","access":"open","checked_at":"2026-11-05","status":"current","notes":"The publisher's PDF returned HTTP 403 to the automated check, so publisher access could not be confirmed; the supplied HAL paper copy was read."},"name":"Fagus moesiaca crown foliage dry biomass, DBH and height (Eq. 5)","output":{"quantity":"foliage_biomass"},"expression":"0.0001663 * D^2 * H + 0.224","published":{"expression":"0.0001663 * D^2 * H + 0.224","units":{"D":"cm","H":"m"},"output_unit":"kg"},"taxon":{"level":"species","name":"Fagus moesiaca","group":"broadleaf"},"region":{"scope":"site","countries":["GR"],"place":"Vermio Mountain, Northern Greece","biomes":["temperate"]},"stand":"natural","fit":{"n_trees":16,"dbh_min_cm":5.19,"dbh_max_cm":40.6,"r2":0.919},"evidence":[{"field":"expression","quote":"MFC = 0.0001663(0.000013)D2H + 0.224(0.243), R2 = 0.919.","locator":"Eq. 5, p. 442"},{"field":"output","quote":"MFC: foliage mass in crown","locator":"Table III note, p. 442"},{"field":"output","quote":"oven dried to constant weight","locator":"Section 2.2, p. 441"},{"field":"published.units","quote":"Biomass is expressed in kg, diameter in cm, and height in m.","locator":"Table III note, p. 442"},{"field":"taxon","quote":"Fagus moesiaca Cz.","locator":"Abstract, p. 439"},{"field":"region","quote":"Vermio Mountains of Northern\nGreece","locator":"Abstract, p. 439"},{"field":"region","quote":"the forest can be classified as temperate Mediterranean","locator":"Section 2.1, p. 440"},{"field":"stand","quote":"Naturally regenerated, pure beech","locator":"Section 2.1, p. 440 (rendered page)"},{"field":"fit.n_trees","quote":"number of sampled trees was 16","locator":"Table III caption, p. 442"},{"field":"fit.dbh_min_cm","quote":"5.19 to 40.6 cm","locator":"Section 2.2, p. 441"},{"field":"fit.dbh_max_cm","quote":"5.19 to 40.6 cm","locator":"Section 2.2, p. 441"},{"field":"fit.r2","quote":"0.919","locator":"Eq. 5, p. 442"}],"check":[{"inputs":{"D":20,"H":15},"expected":1.2218,"origin":"computed","note":"Computed from the printed equation; the sampled trees' height range is not reported."}],"verification":"original_read","checked_at":"2026-11-05","notes":"D is DBH at 1.3 m; H is measured total height. Parentheses in the paper give standard errors, not multiplication terms. This original-scale equation needs no log back-transform correction. The authors say adding height improved foliage predictions. Crown foliage only, not total foliage. The DBH range retained here is the methods' explicit 5.19–40.6 cm range (p. 441); the comparison section describes a largest Greek tree of 41.45 cm (p. 446). That sample-description discrepancy is not used to extend the reported range. No fitted height bounds are supplied."}