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Table 3 Tree structure metrics and AGB estimates generated from TLS

From: Estimating urban above ground biomass with multi-scale LiDAR

Location Trees DBH Tree height (m) Projected crown area (m2) Tree volume (m3)a AGB (Mg ha–1)c
N \(\rho\) (ha\(^{-1}\)) QSM Mean Max Mean Max Mean Max \(\sum\) Meanb Max Local Borough-wide
Russell Square 78 30.4 25 0.78 1.65 20.6 34.1 214.2 694.0 16068 12.3 ± 4% 46.8 201.6 ± 2.2 193.3 ± 1.8
Malet Street 30 38.5 25 0.52 0.76 19.8 26.1 168.2 349.6 5047 6.4 ± 3% 14.3 124.8 ± 1.1 180.2 ± 2.9
St Pancras 97 38.2 9 0.60 1.55 24.7 33.9 214.4 871.9 20799 15.8 ± 7% 44.4 244.7 ± 10.5 258.8 ± 2.7
Highgate Cemetery 180 385.9 40 0.24 0.78 15.9 29.9 36.7 268.0 6604 1.2 ± 6% 8.0 276.3 ± 10.1 485.3 ± 7.6
  1. As the volume of all TLS extracted trees could not be calculated confidently, AGB values are calculated using locally and Borough-wide derived allometry. It should be noted that AGB values are for inter-comparison purposes only and are not representative of likely AGB densities in a 1 ha area, for example, Malet Street is located in a highly developed area which is mostly devoid of trees
  2. a Tree volumes are for QSM trees only
  3. b 95% confidence level
  4. c P. acerifolia wood density value used except for Highgate Cemetery where F. excelsior was more common