{"id":"gomez-2021-a-cochliacantha","source":{"id":"gomez-2021","citation":"Gómez, J.D., Etchevers, J.D., Campo, J., Monterroso, A.I., Paustian, K., Asensio, C. (2021). Allometric relationships to estimate aboveground biomass of species in a tropical dry forest of Central Mexico. Madera y Bosques, 27(4), e2742441.","title":"Allometric relationships to estimate aboveground biomass of species in a tropical dry forest of Central Mexico","authors":["Gómez, J.D.","Etchevers, J.D.","Campo, J."],"year":2021,"venue":"Madera y Bosques","doi":"10.21829/myb.2021.2742441","url":"https://doi.org/10.21829/myb.2021.2742441","read_url":"https://myb.ojs.inecol.mx/index.php/myb/article/download/2441/2274","access":"open","license":"CC BY-NC-SA 4.0","checked_at":"2026-11-02","status":"current","notes":"Only the dbh-only power models (Tables 3 and 4) are captured. The multiple regressions on basal area, wood density and height (Tables 5 and 6) are not added."},"name":"Acacia cochliacantha AGB from dbh (Table 3)","output":{"quantity":"agb"},"expression":"exp(-1.291 + 2.178 * ln(D))","published":{"expression":"exp(-1.291 + 2.178 * ln(DBH))","units":{"DBH":"cm"},"variables":{"DBH":"D"},"output_unit":"kg"},"taxon":{"level":"species","name":"Acacia cochliacantha","family":"Fabaceae","group":"broadleaf"},"region":{"scope":"site","countries":["MX"],"place":"Sierra de Huautla Biosphere Reserve (Ejido El Limón), Morelos","biomes":["tropical","dryland"]},"stand":"natural","fit":{"dbh_min_cm":3.5,"dbh_max_cm":12,"r2":0.89,"method":"Linear regression of ln(biomass) on ln(dbh)"},"evidence":[{"field":"expression","quote":"ln(Y) = ln(a) + b ln(X)","locator":"Eq. 2, p. 4"},{"field":"expression","quote":"Acacia cochliacantha: n 8(26)*; β0 -1.291; β1 2.178; R2 0.89","locator":"Table 3, p. 7"},{"field":"fit.r2","quote":"R2 0.89","locator":"Table 3, p. 7"},{"field":"output","quote":"Y is aboveground biomass (kg), X is dbh (cm)","locator":"p. 4"}],"check":[{"inputs":{"D":10},"expected":41.431,"origin":"computed","note":"computed from the printed coefficients"},{"inputs":{"D":20},"expected":187.486,"origin":"computed","note":"computed from the printed coefficients"}],"verification":"original_read","checked_at":"2026-11-02","notes":"ln(Y) = b0 + b1 ln(DBH), natural log, no correction factor stated in the paper. Aboveground biomass includes foliage and small branches (trunk and crown sections were summed). The paper lists n as 8(26)* (the starred figure counts individual branches treated as units); n_trees is therefore left out and the dbh range is that of Table 1."}