isses in
is in the
shown
Lon is
avail-
i re-
1 value
a, the
>ecause
5 due to
Lons.
GROUND DATA COLLECTION
The center points of the 402 ground plots were established
permanently throughout the Park. At each plot, soil type,
aspect, elevation, and data since last fire were noted.
Dead surface biomass was estimated using a transect sampling
procedure (Brown and Oberheu, 1980) and a standardized fuel
model (Albini, 1976) was selected. Finally, a variable plot
(basal area factor 10) was used to inventory the standing
trees. For each variable plot, the number of trees, di
ameter classes, canopy cover, age classes and basal area
for each species was tallied.
s appar-
en the
lope
tling,
is a
veg-
the
dence
.nds , we
because
tions
Use
MAP PRODUCTION AND STATISTICAL OUTPUT
After the field work had been completed, it became apparent
that the original 19 spectral strata represented three vege
tation types (Table 3 and Figure 1). The composition of
these types was characterized by aggregating similar sample
plots on the basis of the species mix in the canopy over
story. The aggregations for the Chaparral type is given in
Table 4. In addition, these vegetation types were further
characterized in terms of fuel load (Table 5), potential
spread rate (Table 6) and predicted flame height based on
the fuel inventory data and on specified weather conditions
selected to be typical of extreme fire weather for this
vely
as re
nd use
region.
NUMBER OF
PERCENT
NUMBER
urn map-
AGGREGATION
PLOTS
OF TOTAL
OF ACRES
tion-
qu/ma
2
4.9
70
qu/ch/kp/ma
3
7.3
106
IN TYPE
qu/kp/ma
26
63.4
916
ch/kp/na
5
12.2
176
kp/ma
5
12.2
176
'orest
41
100.0
1,444
'ir Forest
acres
qu-Quercus . ma-Arctostaphlo~s~! ch-Castanopsis~ and
kp-Pinus
Table 4. The composition of the Chaparral type based
on canopy overstory aggregations.
■ral
icres
9 spec-
ng of
based
CONCLUSIONS
Based on the preliminary analysis of the correlations be
tween the data extracted from the digital data band and that
collected in the field, we make the following conclusions
regarding the pilot inventory system designed for the Big
Basin Redwoods State Park:
1. The classified Landsat data provided the best strati
fication for the wildland fuels within the Park. Because
of the high correlations between the distribution of these
data to the distribution of the soil and hypsographic data,
the stratification adequately represented the other grad-
59
■‘■y ;