{"id":"mugasha-2016-agb-dindili-m9","source":{"id":"mugasha-2016","citation":"Mugasha, W.A., Mwakalukwa, E.E., Luoga, E., et al. (2016). Allometric Models for Estimating Tree Volume and Aboveground Biomass in Lowland Forests of Tanzania. International Journal of Forestry Research, 2016, 8076271.","title":"Allometric Models for Estimating Tree Volume and Aboveground Biomass in Lowland Forests of Tanzania","authors":["Mugasha, W.A.","Mwakalukwa, E.E.","Luoga, E."],"year":2016,"venue":"International Journal of Forestry Research","doi":"10.1155/2016/8076271","url":"https://doi.org/10.1155/2016/8076271","read_url":"https://onlinelibrary.wiley.com/doi/10.1155/2016/8076271","access":"open","checked_at":"2026-11-02","status":"current"},"name":"Tanzania lowland forest, Dindili (dry lowland forest), D and H (model 9)","output":{"quantity":"agb"},"expression":"0.1568 * (H * D^2)^0.8613","published":{"expression":"0.1568 * (HT * DBH^2)^0.8613","units":{"DBH":"cm","HT":"m"},"variables":{"DBH":"D","HT":"H"},"output_unit":"kg"},"taxon":{"level":"mixed","name":"Mixed lowland forest tree species","group":"broadleaf"},"region":{"scope":"site","countries":["TZ"],"place":"Dindili Forest Reserve, Morogoro, Tanzania (dry lowland forest)","biomes":["tropical"]},"stand":"natural","fit":{"n_trees":30,"r2":0.87,"method":"maximum-likelihood non-linear regression with variance function"},"evidence":[{"field":"expression","quote":"Dindili forest 9 0.1568 0.8613 0.585 × dbh1.683 478.61 0.87 415.06","locator":"Table 5 (columns: a, b, c, error, RMSE, R2, AIC)"},{"field":"published.units","quote":"where Y is the volume (m3 tree−1) or biomass (kg tree−1); WD is wood basic density (g cm−3); a, b, and c are model parameters to be estimated.","locator":"Section 2.6.2"},{"field":"fit.n_trees","quote":"A total of 30 trees were selected from each site","locator":"Section 2.3"}],"check":[{"inputs":{"D":20,"H":15},"expected":281.49,"origin":"computed","note":"hand-computed from the published form"},{"inputs":{"D":50,"H":25},"expected":2118.5,"origin":"computed","note":"hand-computed from the published form"}],"verification":"original_read","checked_at":"2026-11-02","notes":"Fitted by maximum-likelihood non-linear regression with a variance function, no back-transformation. Table 5 column \"R2\" is stored as r2. Total AGB is the sum of stump, stem, branches, twigs and leaves, so foliage is included. Wood density WD is the tree's sample-disc basic density (g/cm³)."}