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Table 2 Estimates of carbon density in treated and untreated stands

From: Variation in tree mortality and regeneration affect forest carbon recovery following fuel treatments and wildfire in the Lake Tahoe Basin, California, USA

  Carbon density (Mg C ha-1)
Time Step Pool TB stand (n = 13) NTB stand (n = 26) p value Significance
Pre-treatment Live Tree C 108.20 96.43 0.471  
  Snag C 3.06 8.39 0.028 **
  FWD C 3.68 3.68 n.a. n.a.
  CWD C 33.87 33.87 n.a. n.a.
  Floor C 33.52 33.52 n.a. n.a.
  Aboveground C 182.33 175.89 0.758  
Pre-fire Live Tree C 79.89 96.05 0.489  
  Snag C 3.06 8.39 0.028 **
  FWD C 2.22 3.68 0 *
  CWD C 3.85 33.87 0.019 **
  Floor C 22.82 33.52 0.258  
  Aboveground C 111.85 175.51 0.000 ***
2008 Live Tree C 57.94 10.82 0.000 ***
  Snag C 15.34 70.99 0.000 ***
  FWD C 1.20 0.61 0.087 *
  CWD C 2.01 10.62 0.010 **
  Floor C 12.78 8.03 0.003 ***
  Aboveground C 89.27 101.08 0.691  
2009 Live Tree C 53.27 7.66 0.000 ***
  Snag C 18.51 73.65 0.000 ***
  FWD C 1.66 1.11 0.159  
  CWD C 3.15 11.12 0.025 **
  Floor C 13.02 8.53 0.038 **
  Aboveground C 89.61 102.06 0.607  
2010 Live Tree C 49.59 6.93 0.000 ***
  Snag C 20.33 74.28 0.000 ***
  FWD C 1.81 2.16 0.368  
  CWD C 4.97 14.81 0.003 ***
  Floor C 13.42 7.37 0.009 ***
  Aboveground C 90.11 105.55 0.586  
  1. Estimates of carbon density for five aboveground C pools (live trees, snags, Fine Woody Debris [<7.62 cm diameter], Coarse Woody Debris [> = 7.62 cm diameter] and forest floor [litter and duff combined]) in treated (TB) and untreated (NTB) stands in the Angora fire before disturbance by treatment and wildfire, and for three years after wildfire. : Pre-treatment carbon densities of surface fuels are assumed to be the same in TB and NTB plots : Carbon densities of surface fuels before fire were estimated from 9 treated and 9 untreated plots outside the wildfire.