Biomass estimation in the Tapajos National Forest, Brazil: Examination of sampling and allometric uncertainties

By M. Keller, M. Palace, G. Hurtt. 2001

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Ecological research in the large-scale biosphere-atmosphere experiment in Amazonia: early results (2004, background): “The biomass density of Amazon forests is poorly quantified, mainly because of the scarcity of plot-based data (Houghton et al. 2001, Keller et al. 2001).”
Variation in aboveground tree live biomass in a central Amazonian Forest: Effects of soil and topography (2006, background): “, 2003), which generally lack replicates and are rarely randomly located in the landscape (Brown and Lugo, 1992; Clark and Clark, 2000; Keller et al., 2001; Clark, 2002; Chave et al., 2004).”
Reducing the error in biomass estimates strongly depends on model selection (2015, background): “Because biomass exhibits positive spatial autocorrelation (Keller et al. 2001; Chave et al. 2003; Wagner et al. 2010), these K units are not true independent replicates.”
Estimation of dry matter content in leaves using normalized indexes and PROSPECT model inversion (2012, background): “…biomass (trunk, branches, leaves, bark, litter, etc.) is a key factor in the carbon cycle (Brown et al. 1999, Schlegel et al. 2000, Keller et al. 2001), owing to the interest in knowing nutrient distribution in forests (Baker et al. 1984, Brown et al. 1999, Lu 2005) and fuel…”