Table 7 Bootstrap results for mean and total above-ground biomass (AGB) with corresponding 95Â % confidence intervals for four model-based methods, compared to a design-based method
From: Model-based estimation of above-ground biomass in the miombo ecoregion of Zambia
Method | Mean | Total | 95Â % CI for total AGB | Relative efficiency |
|---|---|---|---|---|
|  | AGB (t∙ha−1) | AGB (t) | (half-width) |  |
GAM (1) | 67.3 | 69,961,134 | 694,260 | 0.82 |
Sigmoidal (2) | 62.1 | 64,526,209 | 477,730 | 1.20 |
Exponential (3) | 61.9 | 64,316,094 | 500,070 | 1.15 |
Null model | 62.8 | 65,244,018 | 573,365 | – |
Design-based | 63.0 | 65,472,297 | 13,055,331 | – |