Skip to main content

Table 6 Comparisons of inventory-based site C stock changes (∆C 2 ) determined from plot means (live biomass and detrital fluxes), K-MSN scaling mean (standard deviation), and K-MSN with footprint weighting (K-MSN FPW) mean (standard deviation) to estimates of ∑NEP from flux towers and ∑NEP from CBM-CFS3 for the (a) 4-year period 2003–2006 Mg C ha −1 and the (b) mean annual value for each method in Mg C ha −1 yr −1

From: Comparison of carbon-stock changes, eddy-covariance carbon fluxes and model estimates in coastal Douglas-fir stands in British Columbia

a) Site
Method DF49 HDF90 HDF88 HDF00
∆C2 Mean 19.4 (7.2) 2.0 (8.5) −2.5 (13.3) −10.1 (8.2)
∆C2 K-MSN 17.8 (5.8) ± 1.2 na/ 1.6 (11.7) ± 1.2 −8.6 (5.0) ± 1.3
∆C2 K-MSN FPW 19.5 (5.9) ± 1.2 na/ −0.2 (11.2) ± 1.2 −7.7 (3.5) ± 1.3
ΣNEP Flux Tower 13.6 ± 3.6 na/ −1.9 −20.1
ΣNEP CBM-CFS3* 18.9 2.0* na/ −11.5
ΣNEP CBM-CFS3 FPW 24.1 na/ na/ −17.9
b) Site
Method DF49 HDF90 HDF88 HDF00
∆C2 Mean 4.9 (1.8) 0.5 (2.1) −0.63 (3.3) −2.5 (2.0)
∆C2 K-MSN 4.5 (1.5) ± 1.2 na/ 0.4 (2.9) ± 1.2 −2.2 (1.2) ± 1.3
∆C2 K-MSN FPW 4.9 (1.5) ± 1.2 na/ −0.1 (2.8) ± 1.2 −1.9 (1.9) ± 1.3
ΣNEP Flux Tower 3.4 ± 0.9 na/ −0.5 −5.0
ΣNEP CBM-CFS3* 4.7 0.5* na/ −2.9
ΣNEP CBM-CFS3 FPW 6.0 na/ na/ −4.47
  1. *average of all grid cells encompassing the six plots 2003 – 2006.
  2. na – not available or not applicable.