Allometric Equations for Estimating Carbon Stocks in Natural Forest in New Zealand
By P. Beets, M. Kimberley, G. R. Oliver, S. H. Pearce, J. D. Graham, A. Brandon. 2012
90 citations recorded by the source corpus.
Species-specific and mixed-species volume and above ground biomass allometric equations were developed for 15 indigenous tree species and four tree fern species in New Zealand. A mixed-species tree equation based on breast height diameter (DBH) and tree height (H) provided acceptable estimates of stem plus branch (>10 cm in diameter over bark) volume, which was multiplied by live tree density to estimate dry matter. For dead standing spars, DBH, estimated original height, actual spar height and compatible volume/taper functions provided estimates of dead stem volume, which was multiplied by live tree density and a density modifier based on log decay class from field assessments to estimate dry matter. Live tree density was estimated using ratio estimators. Ratio estimators were based on biomass sample trees, and utilized density data from outerwood basic density surveys which were available for 35 tree species sampled throughout New Zealand. Foliage and branch (<10 cm in diameter over bark) dry matter were estimated directly from tree DBH. Tree fern above ground dry matter was estimated using allometric equations based on DBH and H. Due to insufficient data, below ground carbon for trees was estimated using the default IPCC root/shoot ratio of 25%, but for tree ferns it was estimated using measured root/shoot ratios which averaged 20%.
Subfields: Environmental Engineering, Global and Planetary Change, Nature and Landscape Conservation
View Paper: https://www.semanticscholar.org/paper/1a8d631f5c250033c4a624b3ab034287e99ba7fb
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In Environmental Engineering
In Global and Planetary Change
In Nature and Landscape Conservation
Citations in the corpus
- Effects of uncertainty in model predictions of individual tree volume on large area volume estimates (2014, background): “This mathematical form has emerged as increasingly popular and has been used in China (Xiang et al. 2011), throughout Europe (Zianis et al. 2005), in the United States (Jenkins et al. 2003), in Norway (Breidenbach et al. 2013), in New Zealand (Beets et al. 2012), and for many recent tropical applica”