Fig. 2
From: Model-based estimation of above-ground biomass in the miombo ecoregion of Zambia
Top row: Scatterplot for two forms of observed canopy cover (CC) versus observed above-ground biomass (AGB), by vegetation type or land use. CCHEMI is the vertical projection of tree crowns onto the ground, derived from crown area-DBH models; CCHEMI is percentage of the sky blocked by tree crowns measured using a spherical densiometer. Bottom row: Scatterplot for two forms of predicted canopy cover (CC) versus observed above-ground biomass (AGB), by vegetation type or land use, with three models to estimate AGB based on \( {\hat{CC}}_{\mathrm{VERT}} \) or \( {\hat{CC}}_{\mathrm{HEMI}} \)