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Indicator E.a. - Maps and Data for the Report on the East Cascades South Mapping Region
 
Figure 18. Forest type based on dominant species. 
Figure 19. Size classes. 
Figure 20. Amount of forested area in each size class by dominant tree species. 
Figure 21. Percent canopy cover of all live trees. 
Table 6. Summary statistics of the diversity of forest types. 
 
 

Figure 18. Forest type based on dominant species.
 
This is a map of the forest types based on dominant species for the East Cascades South mapping region. 
 

Map Legend and Data for Figure 18
Dominant Species
Hectares (Acres) x 1000
Percent of Total
Forested Area
 Ponderosa pine
910 (2250)
50.2
 Lodgepole pine
427 (1055)
23.6
 White fir
232 (575)
12.8
 Juniper
145 (359)
8.0
 Douglas-fir
22 (55)
1.2
Other species
47 (116)
2.6
 Regenerating forest
28 (68)
1.5
 
 
Printable map and data file [jpg; 675 KB]

 
 
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Figure 19. Size classes.
 
This is a map displaying six categories of size classes for the East Cascades South Mapping Region. 


 
Map Legend and Data for Figure 19
Size Class
Hectares (Acres) x 1000
Percent of Total
Forested Area
 Shrub/Seedling
QMDA_DOM <2.5 or CANCOV <10
27 (67)
1.5
 Sapling/Pole  
QMDA_DOM <=2.5 and <25.0
713 (1761)
39.3
Small tree
QMDA_DOM <=25.0 and <37.5
680 (1681)
37.5
Medium tree
QMDA_DOM <=37.5 and <50.0
297 (735)
16.4
Large tree
QMDA_DOM <=50.0 and <75.0
91 (224)
5.0
Giant tree
QMDA_DOM >=75.0
54 (134)
0.3
 
QMDA_DOM represents the quadratic mean diameter (in centimeters) or the dominent tree species.  CANCOV represents canopy cover estimated from the Forest Vegetation Simulator.
 
 
Printable map and data file [jpg; 708 KB]

 
 
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Figure 20. Amount of forested area in each size class by dominant tree species.
 
Figure 4. This is a bar graph displaying the amount of forested area in each size class by dominant tree species for the East Cascades South mapping region. 


*Forest areas represented by the "Other Species" category include red alder, bigleaf maple, incense-cedar, grand fir, Engelmann spruce, Oregon white oak, subalpine fir, Pacific madrone, giant chinquapin, California black oak, western white pine, aspen, knobcone pine, Pacific yew, willow, and black cottonwood.
 
 
Printable chart [jpg; 17 KB]

 
 
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Figure 21. Percent canopy cover of all live trees.
 
This is a map displaying the percent canopy cover of all live trees in the East Cascades South Mapping Region. 
 
 

Map Legend and Data for Figure 21
Canopy Cover Class
Hectares (Acres) x 1000
Percent of Total
Forested Area
 Less than 10%
154 (381)
8.5
 10% to 40%
887 (2191)
48.9
 40% to 70%
637 (1573)
35.1
 Greater than 70%
134 (332)
7.4
 
 
Printable map and data file [jpg; 552 KB]

 
 
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Table 6. Summary statistics of the diversity of forest types.
 
Species
Average
Percent
Canopy
Cover
Area
Hectares (Acres)
Percent
of Total
Forest Area
Number of
Forest
Subtypes
 Ponderosa pine
36
910,723 (2,250,445)
50
10
 Lodgepole pine
43
427,341 (1,055,983)
24
10
 White fir
60
232,909 (575,530)
13
10
 Juniper
17
145,452 (359,419)
8
2
 Douglas-fir
65
22,233 (54,938)
1
9
 Incense-cedar
45
11,397 (28,161)
0.6
5
 Shasta red fir
69
7,053 (17,429)
0.4
5
 Mountain hemlock
83
6,301 (15,571)
0.3
7
 Aspen
45
5,242 (12,952)
0.3
2
 Oregon white oak
44
5,216 (12,888)
0.3
2
 Sugar pine
51
5,187 (12,818)
0.3
2
 Western white pine
56
1,888 (4,667)
0.1
3
 Engelmann spruce
59
1,888 (4,664)
0.1
3
 Mountain mahogany
11
1,261 (3,116)
0.07
1
 Subalpine fir
68
1,019 (2,518)
0.06
1
 Pacific silver fir
90
283 (699)
0.02
2
 California black oak
42
273 (673)
0.02
1
 Western hemlock
95
7 (18)
0.0004
1
 
 
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