{"id":"lencinas-2002-vfsc-sh","source":{"id":"lencinas-2002","citation":"Lencinas, M. V., Martínez Pastur, G., Cellini, J. M., Vukasovic, R., Peri, P., & Fernández, M. C. (2002). Incorporación de la altura dominante y la clase de sitio a ecuaciones estándar de volumen para Nothofagus antarctica (Forster f.) Oersted. Bosque, 23(2), 5-17.","title":"Incorporación de la altura dominante y la clase de sitio a ecuaciones estándar de volumen para Nothofagus antarctica (Forster f.) Oersted","authors":["Lencinas, M. V.","Martínez Pastur, G.","Cellini, J. M."],"year":2002,"venue":"Bosque","doi":"10.4067/s0717-92002002000200002","url":"https://doi.org/10.4067/s0717-92002002000200002","read_url":"https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0717-92002002000200002","access":"open","license":"CC BY-NC (per Unpaywall)","checked_at":"2026-11-02","status":"current"},"name":"Nothofagus antarctica inside-bark merchantable stem volume (to 15 cm top) from D and H (Schumacher-Hall, Cuadro 4)","output":{"quantity":"stem_volume"},"expression":"0.20379745 / 10000 * D^2.32092575 * H^0.71495048","published":{"expression":"0.20379745 / 10000 * DAP^2.32092575 * HT^0.71495048","units":{"DAP":"cm","HT":"m"},"variables":{"DAP":"D","HT":"H"},"output_unit":"m3"},"taxon":{"level":"species","name":"Nothofagus antarctica","family":"Nothofagaceae","group":"broadleaf"},"region":{"scope":"regional","countries":["AR"],"place":"Central Isla Grande de Tierra del Fuego, Argentina (15 sites)","biomes":["temperate"]},"stand":"natural","fit":{"n_trees":251,"dbh_min_cm":7.5,"dbh_max_cm":61,"h_min_m":3.5,"h_max_m":15,"r2":0.93,"method":"nonlinear regression"},"evidence":[{"field":"expression","quote":"V = (a / 10.000) · DAP^b · HT^c  (2)","locator":"Ecuación (2), Modelo 2 (estándar tradicional, Schumacher-Hall)"},{"field":"expression","quote":"VFSC = volumen de fuste sin corteza (m3); Modelo 2: a = 0,20379745, b = 2,32092575, c = 0,71495048","locator":"Cuadro 4"},{"field":"fit.n_trees","quote":"Se utilizaron 251 árboles de Nothofagus antarctica a lo largo de Tierra del Fuego (Argentina) (DAP entre 7,5-61,0 cm y HT entre 3,5-15,0 m).","locator":"Resumen"},{"field":"fit.r2","quote":"r2 0,93","locator":"Cuadro 4, Modelo 2"}],"check":[{"inputs":{"D":15,"H":8},"expected":0.04836,"origin":"computed","note":"computed from the published form (coefficients as printed; a divided by 10.000)"},{"inputs":{"D":30,"H":12},"expected":0.32289,"origin":"computed","note":"computed from the published form (coefficients as printed; a divided by 10.000)"},{"inputs":{"D":50,"H":14},"expected":1.1798,"origin":"computed","note":"computed from the published form (coefficients as printed; a divided by 10.000)"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Cuadro 4 and the formulas are images on SciELO; coefficients transcribed from them. V in m3, DAP in cm, HT total height in m. Coefficient a is divided by 10.000 in the printed formula. VFSC is the merchantable stem volume inside bark to a 15 cm minimum top diameter (Métodos: 'el fuste sin corteza de extracción hasta un diámetro mínimo de 15 cm'), not the whole stem. The paper also prints Models 3 and 5 (site class CS or stand dominant height HD) and per-stand local models; those need predictors outside the canonical variables and are not included."}