{"id":"ryan-2011-root","source":{"id":"ryan-2011","citation":"Ryan, C.M., Williams, M., Grace, J. (2011). Above- and Belowground Carbon Stocks in a Miombo Woodland Landscape of Mozambique. Biotropica, 43(4), 423–432.","title":"Above- and Belowground Carbon Stocks in a Miombo Woodland Landscape of Mozambique","authors":["Ryan, C.M.","Williams, M.","Grace, J."],"year":2011,"venue":"Biotropica","doi":"10.1111/j.1744-7429.2010.00713.x","url":"https://doi.org/10.1111/j.1744-7429.2010.00713.x","read_url":"http://web.archive.org/web/20190427125852id_/https://www.research.ed.ac.uk/portal/files/16641514/C_stock_overview_v13_w_proofs.pdf","access":"paywalled","checked_at":"2026-11-01","status":"current","notes":"Read the author's accepted manuscript with proofs from the University of Edinburgh repository (archived copy)."},"name":"Miombo coarse root biomass, DBH only","output":{"quantity":"bgb"},"expression":"exp(2.262 * ln(D) - 3.370) / 0.47","published":{"expression":"exp(2.262 * ln(DBH) - 3.370) / 0.47","units":{"DBH":"cm"},"variables":{"DBH":"D"},"output_unit":"kg"},"taxon":{"level":"mixed","name":"Miombo woodland trees","group":"broadleaf"},"region":{"scope":"site","countries":["MZ"],"place":"Nhambita, Sofala province, Mozambique","biomes":["tropical","dryland"]},"stand":"natural","fit":{"n_trees":23,"r2":0.94,"rse":0.43,"method":"OLS on ln-transformed data, no correction factor"},"evidence":[{"field":"expression","quote":"log(Bdest,r) = 2.262 log(DBH,dest)-3.370","locator":"Table 1"},{"field":"notes","quote":"the mean (47%±0.20) was used for all conversions to C mass","locator":"Methods"}],"check":[{"inputs":{"D":20},"expected":64.16,"origin":"computed","note":"hand-computed from the published form"}],"verification":"original_read","checked_at":"2026-11-01","notes":"Paper gives kg carbon; divided by the paper's 0.47 carbon fraction to give kg dry mass. No correction factor, as in the paper."}