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Indicator E.a. - Maps and Data for the Report on the Coast Range Mapping Region
 
Figure 10. Forest type based on dominant species. 
Figure 11. Size classes. 
Figure 12. Amount of forested area in each size class by dominant tree species. 
Figure 13. Percent canopy cover of all live trees. 
Table 4. Summary statistics of the diversity of forest types. 
 
 

Figure 10. Forest type based on dominant species.
 
This is a map of forest type based on dominant species in the Coast Range Mapping Region 
 

Map Legend and Data for Figure 10
Dominant Species
Hectares (Acres) x 1000
Percent of Total
Forested Area
 Douglas-fir
1,349,907 (3,335,693)
68.5
 Alder
231,969 (573,207)
11.8
 Western hemlock
154,098 (380,766)
7.8
 Sitka spruce
48,936 (120,923)
2.5
 Western redcedar
35,200 (86,980)
1.8
 Bigleaf maple
33,218 (82,083)
1.7
 Tanoak
27,029 (66,791)
1.4
 Oregon White Oak
20,868 (51,567)
1.0
Beach pine
19,215 (47,481)
1.0
Other species
49,060 (121,231)
2.5
 Regenerating forest
114,054 (281,835)
5.8
 
 
Printable map and data file [jpg; 337 KB]

 
 
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Figure 11. Size classes.
 
 
 
Map Legend and Data for Figure 11
Size Class
Hectares (Acres) x 1000
Percent of Total
Forested Area
 Shrub/Seedling
QMDA_DOM <2.5 or CANCOV <10
114 (283)
5.5
 Sapling/Pole
QMDA_DOM <=2.5 and <25.0
717 (1771)
34.4
Small tree
QMDA_DOM <=25.0 and <37.5
533 (1318)
25.6
Medium tree
QMDA_DOM <=37.5 and <50.0
279 (690)
13.4
Large tree
QMDA_DOM <=50.0 and <75.0
267 (659)
12.8
Giant tree
QMDA_DOM >=75.0
171 (422)
8.2
 
*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; 310 KB]

 
 
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Figure 12. Amount of forested area in each size class by dominant tree species.
 
This is a bar chart displaying the amount of forested area in each size class displayed by dominant tree species for the Coast Range Mapping Region. 
*Forest areas represented by the “Other Species” category include California laurel, Port Orford cedar, noble fir, willow, sugar pine, grand fir, Pacific madrone, California black oak, redwood, giant chinquapin, western white pine, knobcone pine, canyon live oak, and dogwood.
 
 
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Figure 13. Percent canopy cover of all live trees.
 
This is a map displaying the percent of canopy cover of all live trees for the Coast Range Mapping Region. 
 
Map and Legend for Figure 13
Canopy Cover Class
Hectares (Acres) x 1000
Percent of Total
Forested Area
 Less than 10%
254 (628)
12.2
 10% to 40%
296 (731)
14.2
 40% to 70%
681 (1684)
32.7
 Greater than 70%
852 (2106)
40.9
 
 
Printable map and data file [jpg; 283 KB]

 
 
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Table 4. 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
 Douglas-fir
72
1,349,907 (3,335,693)
69
23
 Alder
64
231,969 (573,207)
12
7
 Western hemlock
82
154,098 (380,786)
8
7
 Sitka spruce
71
48,936 (120,923)
2
5
 Western redcedar
65
35,200 (86,980)
2
6
 Bigleaf maple
58
33,218 (82,083)
2
8
 Tanoak
89
27,029 (66,791)
1
8
 Oregon white oak
53
20,868 (51,567)
1
2
 Beach pine
40
19,215 (47,481)
1
5
California laurel
72
9,405 (23,241)
0.5
6
 Port Orford cedar
62
7,759 (19,172)
0.4
5
 Noble fir
49
6,136 (15,162)
0.3
2
 Willow
50
6,099 (15,070)
0.3
1
 Sugar pine
52
5,179 (12,798)
0.3
2
 Grand fir
55
4,485 (11,083)
0.2
4
 Pacific madrone
62
3,170 (7,833)
0.2
5
 California black oak
75
2,494 (6,163)
0.1
3
 Redwood
71
1,858 (4,591)
0.1
2
 Giant chinquapin
66
1,079 (2,667)
0.05
3
 Western white pine
42
642 (1,586)
0.03
4
 Knobcone pine
64
277 (685)
0.01
1
 Canyon live oak
78
275 (680)
0.01
1
 Dogwood
84
202 (499)
0.01
1
 
 
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