{"id":"ramirez-pelaez-2018-polylepis-incana","source":{"id":"ramirez-pelaez-2018","citation":"Ramírez Apolinario, E., & Peláez Peláez, F. (2018). Modelo alométrico para estimar el potencial de captura de carbono en Polylepis spp en Poccrac, Ancash 2016. Revista de Investigación de la Universidad Le Cordon Bleu, 5(1), 105–115.","title":"Modelo alométrico para estimar el potencial de captura de carbono en Polylepis spp en Poccrac, Ancash 2016","authors":["Ramírez Apolinario, E.","Peláez Peláez, F."],"year":2018,"venue":"Revista de Investigación de la Universidad Le Cordon Bleu","url":"https://revistas.ulcb.edu.pe/index.php/REVISTAULCB/article/view/100","read_url":"https://revistas.ulcb.edu.pe/index.php/REVISTAULCB/article/download/100/243","access":"open","checked_at":"2026-11-01","status":"current"},"name":"Polylepis incana AGB from DBH (Tabla 4, power form)","output":{"quantity":"agb"},"expression":"0.118 * D^2.0078","published":{"expression":"0.118 * DAP^2.0078","units":{"DAP":"cm"},"variables":{"DAP":"D"},"output_unit":"kg"},"taxon":{"level":"species","name":"Polylepis incana","family":"Rosaceae","group":"broadleaf"},"region":{"scope":"site","countries":["PE"],"place":"Poccrac, Ticapampa district (Recuay), Áncash, Peru; native high-Andean Polylepis forest","biomes":["tropical","montane"]},"stand":"natural","fit":{"n_trees":15,"dbh_min_cm":5,"dbh_max_cm":20,"r2":0.936,"method":"OLS on ln(M) vs ln(DAP) in SPSS 22, back-transformed without correction factor"},"evidence":[{"field":"expression","quote":"Polylepis incana M = 0,118 DAP2.0078","locator":"Tabla 4, p. 112 (exponent printed as superscript)"},{"field":"fit.r2","quote":"Polylepis incana -2,137 2,0078 15 0,968 0,936 0,929 0,043","locator":"Tabla 3, p. 112 (LNB, A, N, r, r², r² corregido, error tipo residual)"},{"field":"fit.n_trees","quote":"han sido diseñadas a partir de 15 datos","locator":"Resumen, p. 105"},{"field":"fit.dbh_min_cm","quote":"La medida del DAP de los árboles de Polylepis seleccionados están dentro del rango que va desde 5 cm a 20cm.","locator":"Resumen, p. 105"}],"check":[{"inputs":{"D":11.2},"expected":15.0835,"origin":"computed","note":"computed from the published power form; Tabla 1 tree 1 (DAP 11,2 cm) weighed 16,5 kg"},{"inputs":{"D":18},"expected":39.1037,"origin":"computed","note":"computed from the published power form"}],"verification":"original_read","checked_at":"2026-11-01","notes":"M is aboveground biomass in kg (Tabla 1 header 'M (Kg)'). Trees were air-dried in shade to constant weight (about 8 weeks), not oven-dried, so 'dry' mass may be slightly high. The linear form in Tabla 4 prints 'Ln(M) = -2,371 + 2,0078Ln(DAP)', which conflicts with Tabla 3 (LNB = -2,137) and with 0,118 = exp(-2,137); the power form is used here. The harvested trees in Tabla 1 span DAP 6,0–18,0 cm; 5–20 cm is the range the authors state. No log-bias correction factor applied by the authors. Same data republished in Rev. Tayacaja 1(1):17-27 (2018)."}