{"id":"camargo-2024-model7-power","source":{"id":"camargo-2024","citation":"Camargo García, J. C., Arango Arango, A. M., & Trinh, L. (2024). The potential of bamboo forests as a carbon sink and allometric equations for estimating their aboveground biomass. Environment, Development and Sustainability, 26, 20159–20187.","title":"The potential of bamboo forests as a carbon sink and allometric equations for estimating their aboveground biomass","authors":["Camargo García, J. C.","Arango Arango, A. M.","Trinh, L."],"year":2024,"venue":"Environment, Development and Sustainability","doi":"10.1007/s10668-023-03460-1","url":"https://doi.org/10.1007/s10668-023-03460-1","read_url":"https://link.springer.com/article/10.1007/s10668-023-03460-1","access":"open","license":"CC BY 4.0","checked_at":"2026-11-02","status":"current"},"name":"Guadua culm AGB from dbh, weighted power model (Model 7, Table 7)","output":{"quantity":"agb"},"expression":"0.4608 * D^1.8366","published":{"expression":"0.4608 * dbh^1.8366","units":{"dbh":"cm"},"variables":{"dbh":"D"},"output_unit":"kg"},"taxon":{"level":"species","name":"Guadua angustifolia","family":"Poaceae","group":"bamboo"},"region":{"scope":"regional","countries":["CO"],"place":"Coffee region, Colombian Andes (six sites, 900 to 2000 m a.s.l.)","biomes":["tropical","montane"]},"stand":"natural","fit":{"n_trees":130,"r2":0.6403,"method":"weighted nonlinear power model (weights 1/dbh^2δ)"},"evidence":[{"field":"expression","quote":"M 7, P dbh, a 0.4608, b 1.8366, R2 0.6403","locator":"Table 7, Model 7 (form AGB = a × X^b, Eq. 9)"},{"field":"fit.n_trees","quote":"a total of 130 of these culms were used for destructive sampling and calculating biomass","locator":"Sect. 3, Data collection and measurements"}],"check":[{"inputs":{"D":8},"expected":20.996,"origin":"computed","note":"hand-computed from the published form"},{"inputs":{"D":12},"expected":44.212,"origin":"computed","note":"hand-computed from the published form"},{"inputs":{"D":16},"expected":74.989,"origin":"computed","note":"hand-computed from the published form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Per culm (guadua bamboo), not per tree; dbh is culm diameter at breast height in cm, AGB in kg (culm + branches + leaves). Model 7 of the paper, recommended for practical use because it needs dbh only. The paper's Table 2 gives culm dbh 6.6 to 16.6 cm for the assessed forests but does not say that is the fitted sample, so no range is recorded. Source table shows only the model number, predictor, a and b."}