{"id":"vargas-larreta-2017-all-pines-agb","source":{"id":"vargas-larreta-2017","citation":"Vargas-Larreta, B., López-Sánchez, C.A., Corral-Rivas, J.J., et al. (2017). Allometric Equations for Estimating Biomass and Carbon Stocks in the Temperate Forests of North-Western Mexico. Forests, 8(8), 269.","title":"Allometric Equations for Estimating Biomass and Carbon Stocks in the Temperate Forests of North-Western Mexico","authors":["Vargas-Larreta, B.","López-Sánchez, C.A.","Corral-Rivas, J.J."],"year":2017,"venue":"Forests","doi":"10.3390/f8080269","url":"https://doi.org/10.3390/f8080269","read_url":"https://www.mdpi.com/1999-4907/8/8/269","access":"open","license":"CC BY 4.0","checked_at":"2026-11-02","status":"current","notes":"Stem wood and stem bark component equations are not added (no matching output quantity: stem wood excludes bark). Total AGB is the printed sum of the four component equations."},"name":"Pinus total aboveground biomass","output":{"quantity":"agb"},"expression":"(0.0291 * D^1.74165 * H^1.16614) + (0.02029 * D^1.33299 * H^0.92887) + (0.02508 * D^1.83773 * H^0.54626) + (0.05227 * D^1.28231 * H^0.43275)","published":{"expression":"(0.0291 * d^1.74165 * h^1.16614) + (0.02029 * d^1.33299 * h^0.92887) + (0.02508 * d^1.83773 * h^0.54626) + (0.05227 * d^1.28231 * h^0.43275)","units":{"d":"cm","h":"m"},"variables":{"d":"D","h":"H"},"output_unit":"kg"},"taxon":{"level":"genus","name":"Pinus","family":"Pinaceae","group":"conifer"},"region":{"scope":"regional","countries":["MX"],"place":"Durango, Sierra Madre Occidental","biomes":["temperate","montane"]},"stand":"natural","fit":{"r2":0.93,"method":"Power-law component equations fitted simultaneously by generalized method of moments (additive system)"},"evidence":[{"field":"expression","quote":"Wt = ΣWi","locator":"Table 2, p. 12"},{"field":"expression","quote":"0.0291d1.74165h1.16614","locator":"Table 2, p. 12"},{"field":"expression","quote":"0.02029d1.33299h0.92887","locator":"Table 2, p. 12"},{"field":"expression","quote":"0.02508d1.83773h0.54626","locator":"Table 2, p. 12"},{"field":"expression","quote":"0.05227d1.28231h0.43275","locator":"Table 2, p. 12"},{"field":"output","quote":"Wt is the total tree AGB (i.e., the sum of all the tree biomass components)","locator":"Section 2.3.1"},{"field":"fit.r2","quote":"R2 0.93 (cross-validation)","locator":"Table 2, p. 12"}],"check":[{"inputs":{"D":20,"H":12},"expected":139.524,"origin":"computed","note":"computed from the Table 2 equations (sum of the four components)"},{"inputs":{"D":35,"H":18},"expected":549.06,"origin":"computed","note":"computed from the Table 2 equations (sum of the four components)"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Equation as printed in the Table 2 system for this taxon; d is DBH in cm, h total height in m, output in kg dry mass. R² is the 10-fold cross-validation value. Total AGB is printed as Wt = sum of the four components (stem wood, stem bark, branches, foliage); the expression is that sum of the four printed equations. Group equation for all species of the genus in the study; fit ranges not printed for the group."}