Agriculture Reference
In-Depth Information
Table 4.1
Important canopy fuel characteristics for the four US northern Rocky Mountain stand
types and one Sierran mixed conifer type sampled by Scott and Reinhardt (
2005
).
CBH
is canopy
base height,
CH
is canopy height,
CBD
is canopy bulk density, and
CFL
is canopy fuel load
Canopy fuel variable
Douglas-fir
lodgepole pine
Lodgepole
pine
Ponderosa pine
douglas-fir
Ponderosa
pine
Sierran mixed
conifer
CBH (m)
1.0
1.0
0.0
5.0
3.0
CH (m)
17.0
20.0
23.0
16.0
34.0
CBD (kg m
−3
)
0.26
0.11
0.09
0.17
0.10
CFL (kg m
−2
)
2.09
1.00
1.40
0.93
1.72
Foliage biomass
(kg m
−2
)
1.59
0.80
1.11
0.88
1.48
Branch biomass
(kg m
−2
)
3.26
2.77
3.18
3.66
3.80
Bole biomass (kg m
−2
)
11.22
13.88
10.08
16.53
18.61
Total aboveground
biomass (kg m
−2
)
16.07
17.45
14.36
21.07
23.89
Fig. 4.1
The dimensions of a tree that are important in describing and calculating canopy fuel
characteristics
the description of crown fuels at scales more appropriate for fire modeling. Canopy
fuels are often described using a summary of crown fuels across all trees in an area
from plot- or stand-level measurement techniques (Keane et al.
2005
) (Chap. 8).
One confusing conflict in terminology is fires that spread in the canopy are often
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