Skip to main content
Fire Ecology

Table 4 Best linear multiple regression models for direct and indirect solar radiation, soil moisture, and gap distance in relation to giant sequoia small tree (<30 cm dbh) densities (including saplings) and height in retention harvest (Bearskin, Black Mountain) and wildfire (Case Mountain, Redwood Mountain) stands of sequoia groves in the southern Sierra Nevada, California.

From: Giant Sequoia Regeneration in Groves Exposed to Wildfire and Retention Harvest

      

Overall regression

Grove Variable

Predictors

Coefficient estimate

Coefficient standard error

Predictor P

Partial R

R 2 adj

P

Bearskin

       

   Sequoia small tree density

Gap distance

2.2

1.2

0.072

0.37

0.10

0.072

Black Mountain

       

   Sequoia ht

Direct solar radiation

21.8

9.1

0.036

0.58

0.28

0.036

Case Mountain

       

   Sequoia ht

Indirect solar radiation

16.2

8.6

0.073

0.39

0.11

0.073

Redwood Mountain

       

   Log10 (Sequoia ht)

Indirect solar radiation

0.126

0.030

<0.001

0.69

0.48

0.001

Soil moisture

0.019

0.008

0.040

0.44

  

Sequoia small tree density

Soil moisture

21.4

6.7

0.005

0.57

0.41

0.003

Direct solar radiation

46.5

22.1

0.047

0.42

  

Gap distance

3.9

2.0

0.061

0.40

  
Back to article page