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Fire Ecology

Table 1 Summary of final regression models for fireline intensity (I; kW m−1), flame length (L; m), flame height (H; m), and flame angle (α; degrees) from 21 experimental fires burned in Calluna-dominated fuels in Scotland between spring 2006 and autumn 2009. Models are based on the predictors fuel height (h; m), wind speed (U; m s−1), and live fuel moisture content (Ml; percent dry weight), and the gravimetric constant (g = 9.8 m s−2). The table shows the model form, the coefficients (a, b, or c) for each of the parameters (significance is indicated with † = P < 0.10, * = P < 0.05, ** = P < 0.01, *** = P < 0.001), and the model’s adjusted R2

From: Development and participatory evaluation of fireline intensity and flame property models for managed burns on Calluna-dominated heathlands

Model

Form

a

b

c

R2(adj)

1

I = a + b(h2U)

99.77

0.26***

 

0.58

2

I = a + b(h2U) + cMI

2449.31**

0.24***

–30.33**

0.68

3

L = a + bH

0.45

1.09**

 

0.42

4

L = aIb

0.22**

0.29***

 

0.38

5

H = a + b(I/U)

0.85***

0.0009**

 

0.32

6

tan(αa) = a(U3/I)b

1.62†

0.13

 

0.09

7

tan(αa) = a(U2/gH)b

1.06

0.24*

 

0.20

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