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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.