{"id":"kachamba-2016-agb-m3","source":{"id":"kachamba-2016","citation":"Kachamba, D.J., Eid, T., Gobakken, T. (2016). Above- and Belowground Biomass Models for Trees in the Miombo Woodlands of Malawi. Forests, 7(2), 38.","title":"Above- and Belowground Biomass Models for Trees in the Miombo Woodlands of Malawi","authors":["Kachamba, D.J.","Eid, T.","Gobakken, T."],"year":2016,"venue":"Forests","doi":"10.3390/f7020038","url":"https://doi.org/10.3390/f7020038","read_url":"http://web.archive.org/web/20160828091649id_/http://www.mdpi.com/1999-4907/7/2/38/pdf","access":"open","license":"CC BY 4.0","checked_at":"2026-11-01","status":"current"},"name":"Malawi miombo AGB, DBH and wood density (Model 3)","output":{"quantity":"agb","excludes":["foliage"]},"expression":"0.290457 * D^2.283998 * rho^0.443619","published":{"expression":"0.290457 * dbh^2.283998 * WD^0.443619","units":{"dbh":"cm","WD":"g/cm3"},"variables":{"dbh":"D","WD":"rho"},"output_unit":"kg"},"taxon":{"level":"mixed","name":"Miombo woodland trees","group":"broadleaf"},"region":{"scope":"national","countries":["MW"],"place":"Miombo woodlands at Mtangatanga, Kongwe, Tsamba and Mua-livulezi, Malawi","biomes":["tropical","dryland"]},"stand":"natural","fit":{"n_trees":74,"dbh_min_cm":5.3,"dbh_max_cm":111.2,"h_min_m":3,"h_max_m":25,"r2":0.94,"method":"weighted nonlinear regression (SAS PROC MODEL); r2 is pseudo-R2"},"evidence":[{"field":"expression","quote":"3 74 0.290457 × dbh^2.283998 × ρ^0.443619 0.94","locator":"Table 5"},{"field":"fit","quote":"All 74 33.4 5.3 111.2 21.8 11.6 3.0 25.0 4.9","locator":"Table 2 (dbh and height ranges)"}],"check":[{"inputs":{"D":20,"rho":0.7},"expected":232.23,"origin":"computed","note":"hand-computed from the published form"},{"inputs":{"D":60,"rho":0.7},"expected":2855.34,"origin":"computed","note":"hand-computed from the published form"}],"verification":"original_read","checked_at":"2026-11-01","notes":"Fitted by weighted nonlinear regression, so no back-transform correction factor. Leaves were excluded from the biomass. ρ is species-mean wood specific gravity from the global wood density database."}