{"id":"riofrio-2013-buddleja-coriacea","source":{"id":"riofrio-2013","citation":"Riofrío, J., Herrero de Aza, C., Grijalva, J., & Bravo, F. (2013). Modelos para estimar la biomasa de especies forestales en sistemas agroforestales de la ecorregión andina del Ecuador. 6º Congreso Forestal Español, Vitoria-Gasteiz, Spain. Paper 6CFE01-023.","title":"Modelos para estimar la biomasa de especies forestales en sistemas agroforestales de la ecorregión andina del Ecuador","authors":["Riofrío, J.","Herrero de Aza, C.","Grijalva, J."],"year":2013,"venue":"6º Congreso Forestal Español (Sociedad Española de Ciencias Forestales)","url":"https://www.congresoforestal.es/actas/doc/6CFE/6CFE01-023.pdf","access":"open","checked_at":"2026-11-01","status":"current"},"name":"Buddleja coriacea (colle) AGB per stem from diameter at 30 cm and height (sum of SUR components)","output":{"quantity":"agb"},"expression":"0.025016 * D30^2 * H","published":{"expression":"0.01489*d^2*Ht + 0.006169*d^2*Ht + 0.003957*d^2*Ht","units":{"d":"cm","Ht":"m"},"variables":{"d":"D30","Ht":"H"},"output_unit":"kg"},"taxon":{"level":"species","name":"Buddleja coriacea","family":"Scrophulariaceae","group":"shrub"},"region":{"scope":"regional","countries":["EC"],"place":"Two INIAP agroforestry systems, inter-Andean western cordillera of northern/central Ecuador, above 3000 m (Bosque Siempreverde Montano Alto)","biomes":["tropical","montane"]},"stand":"agroforestry","fit":{"n_trees":13,"h_min_m":3.1,"h_max_m":5.1,"r2":0.925,"method":"Component models (coarse branches >2 cm, thin branches, leaves) fitted by SUR; total = sum of components"},"evidence":[{"field":"expression","quote":"W rg = 0,01489*d2 *Ht","locator":"Tabla 4, Colle, Ramas gruesas"},{"field":"expression","quote":"W rd = 0,006169*d2 *Ht","locator":"Tabla 4, Colle, Ramas delgadas"},{"field":"expression","quote":"W h = 0,003957 *d2 *Ht","locator":"Tabla 4, Colle, Hojas"},{"field":"fit.r2","quote":"Biomasa total 2,09 0,925","locator":"Tabla 4, Colle (RMSE kg, R2 ajustado)"},{"field":"notes","quote":"sólo se seleccionó una rama por individuo para el muestreo destructivo, considerándose a cada muestra como un individuo diferente","locator":"Metodología, Datos"},{"field":"fit.n_trees","quote":"Colle 13 11,1* 2,2 8,6 15,6 4,2 0,6 3,1 5,1","locator":"Tabla 1 (* = diameter at 30 cm above ground)"}],"check":[{"inputs":{"D30":11.1,"H":4.2},"expected":12.9453,"origin":"computed","note":"computed at the sample means (observed mean Wt 13,8 kg, Tabla 1)"},{"inputs":{"D30":15,"H":5},"expected":28.143,"origin":"computed","note":"computed from the sum of published components"}],"verification":"original_read","checked_at":"2026-11-01","notes":"Multi-stemmed shrub (3–7 stems from the base): each sampled stem was treated as one individual, so the model gives biomass per stem; sum over stems for a plant. D30 = stem diameter 30 cm above ground (fitted range 8,6–15,6 cm). Total is the sum of the three Tabla 4 component equations."}