{"id":"kuyah-2016-model2-ols","source":{"id":"kuyah-2016","citation":"Kuyah, S., Sileshi, G. W., & Rosenstock, T. S. (2016). Allometric Models Based on Bayesian Frameworks Give Better Estimates of Aboveground Biomass in the Miombo Woodlands. Forests, 7(2), 13.","title":"Allometric Models Based on Bayesian Frameworks Give Better Estimates of Aboveground Biomass in the Miombo Woodlands","authors":["Kuyah, S.","Sileshi, G. W.","Rosenstock, T. S."],"year":2016,"venue":"Forests","doi":"10.3390/f7020013","url":"https://doi.org/10.3390/f7020013","read_url":"https://www.mdpi.com/1999-4907/7/2/13/htm","access":"open","license":"CC BY 4.0","checked_at":"2026-11-02","status":"current"},"name":"Miombo mixed-species AGB from DBH, OLS (Model 2)","output":{"quantity":"agb"},"expression":"0.143 * D^2.271","published":{"expression":"0.143 * DBH^2.271","units":{"DBH":"cm"},"variables":{"DBH":"D"},"output_unit":"kg"},"taxon":{"level":"mixed","name":"33 miombo woodland tree species","group":"mixed"},"region":{"scope":"regional","countries":["MW"],"place":"Kasungu, Salima and Neno districts, Malawi","biomes":["tropical","dryland"]},"stand":"mixed","fit":{"n_trees":88,"dbh_min_cm":5.1,"dbh_max_cm":105,"method":"Ordinary least squares on ln-ln"},"evidence":[{"field":"expression","quote":"AGB = 0.143 * DBH2.271 (Model 2)","locator":"Table 4 caption"},{"field":"fit.n_trees","quote":"A total of 88 trees ranging in DBH from 5.1 to 105 cm were harvested","locator":"Section 2.3"},{"field":"output.excludes","quote":"total biomass of aboveground woody parts","locator":"Section 2.5"}],"check":[{"inputs":{"D":20},"expected":128.82,"origin":"computed","note":"computed from the published form"},{"inputs":{"D":60},"expected":1561.4,"origin":"computed","note":"computed from the published form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"The OLS comparison model; the authors found it overestimated AGB relative to the Bayesian Model 1 (DIC 59.02, MAPE 27.98%). Models 3-5 add height or crown area with non-significant terms and are not entered. The paper says the AGB is the \"total biomass of aboveground woody parts\"; leaves were weighed separately, so foliage is flagged as excluded. No correction factor is stated for the back-transform, so none is applied. Stand is a mix of woodland and land-use systems. AGB is stem + branches + twigs, and twigs include leaves (Section 2.3, Appendix I)."}