{"id":"prado-1991-total-d","source":{"id":"prado-1991","citation":"Prado Donoso, J. A., & Alarcón Maya, C. (1991). Funciones de biomasa de Eucalyptus globulus ssp. globulus en la región costera central. Ciencia e Investigación Forestal, 5(1).","title":"Funciones de biomasa de Eucalyptus globulus ssp. globulus en la región costera central","authors":["Prado Donoso, J. A.","Alarcón Maya, C."],"year":1991,"venue":"Ciencia e Investigación Forestal","doi":"10.52904/0718-4646.1991.147","url":"https://doi.org/10.52904/0718-4646.1991.147","read_url":"https://revista.infor.cl/index.php/infor/article/download/147/140","access":"open","checked_at":"2026-11-02","status":"current"},"name":"Eucalyptus globulus total dry weight from D (Cuadro 2)","output":{"quantity":"agb"},"expression":"-35.3503 + 0.54647 * D^2","published":{"expression":"-35.3503 + 0.54647 * DAP^2","units":{"DAP":"cm"},"variables":{"DAP":"D"},"output_unit":"kg"},"taxon":{"level":"species","name":"Eucalyptus globulus subsp. globulus","family":"Myrtaceae","group":"broadleaf"},"region":{"scope":"regional","countries":["CL"],"place":"Coastal zone of Valparaíso Region (Longotoma, Peñuelas, Santa Marta), central Chile","biomes":["temperate"]},"stand":"plantation","fit":{"n_trees":41,"r2":0.98,"method":"stepwise linear regression on dry weight (Cuadro 2)"},"evidence":[{"field":"expression","quote":"PTOT = - 35,3503 + 0,54647 D²","locator":"Cuadro 2, TOTAL row, p. 64"},{"field":"fit.n_trees","quote":"se utilizó una muestra de 41 árboles extraídos de tres parcelas","locator":"Metodos, Muestreo, p. 60"},{"field":"fit.r2","quote":"TOTAL ... 0,98","locator":"Cuadro 2, R² column, p. 64"}],"check":[{"inputs":{"D":20},"expected":183.2377,"origin":"computed","note":"hand-computed from the Cuadro 2 form"},{"inputs":{"D":35},"expected":634.0755,"origin":"computed","note":"hand-computed from the Cuadro 2 form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Total dry weight per tree (kg) from DAP only; the paper's Grafico 1 draws it for DAP 14 to 40 cm ('dentro del rango en que la función es confiable'). The Cuadro 2 PTOT is the total of stem, bark, branches, twigs and leaves; the paper does not name stump or roots, so no exclusion is stated. Trees from three unmanaged 20-25 year old coppice-origin (monte alto) stands. The paper does not print DBH or height ranges of the fitted sample, only a table of diameter classes, so none is given. H is read as total height (HTOT): the paper's own stand-table comparison feeds DAP and HT into these functions. No correction factor is stated for the log models, so none applies here. Not additive with the other component functions, as the authors note."}