Table 4. Area of red spruce and Fraser fir mortality by elevation in the Black Mountains, North Carolina,
by elevation zone - 1984.
Elevation
Mortality Class in
Hectares (Percent)
Zone
(Meters)
(0 -
33.3%)
: (33.3 - 66.7%)
: >66
.7% :
Blowdown
: Total
<1402
66.5
( 2.4)
—
—
—
98.7
(3.4)
160.2
1402-1584
599.2
(21.7)
2.8 (0.1)
—
—
—
—
602.0
1585-1767
782.7
(28.4)
29.1 (1.1)
49.2
( 1.8)
4.7
(0.2)
865.7
1768-1949
518.9
(18.8)
81.5 (3.0)
318.5
(11.6)
106.3
(3.9)
1025.2
>1950
19.6
( 0.7)
2.4 (0.1)
53.5
( 1.9)
24.4
(0.9)
99.9
TOTAL
1986.9
115.8
421.2
229.1
2753.0
Table 5. Proportion of spruce-fir
vegetation
types by survey
region and
mortality class in
portions of the
eastern United
States - 1984 (Weiss et al. 1985; Mielke et al
. 1986).
Percent of Area
by Survey Unit
V egetation
: Mortality :
New
York
: V ermont
: New Hampshire
: West Virginia
Type
: Class :
Adirondack
: Tug Hill
Mountains
: Plateau
Mixed-Wood
Light
56
82
83
61
92
Moderate
33
16
14
12
3
Heavy 1/
11
2
3
27
2
Unclassified
-
-
“
3
Spruce-Fir
Light
41
100
78
42
78
Slope
Moderate
31
-
13
15
9
Heavy 1/
28
-
9
43
1
Unclassified
-
-
-
12
Spruce-Fir
Light
53
72
40
45
-
Bog
Moderate
33
14
35
17
-
Heavy
14
14
25
35
“
High-Elevation
Light
-
-
-
0
-
Balsam Fir
Moderate
-
-
-
4
-
Heavy
"
96
1/Underexposed portions of panoramic aerial film did not resolve dead trees.
Table 6. Proportion of red spruce component by survey area, tree condition, vegetation, mortality
class, and state 1984-851./.
: Percent of number
of red spruce >12
7 cm dbh
Survey Area :
Tree
Mixed Wood
Spruce-fir Slope
2/
Condition
: Light
: Moderate :
Heavy
: Light
: Moderate :
Heavy
New Hampshire
Healthy
73.7
44.6
36.5
82.5
58.1
57.8
Declining
17.9
45.0
35.9
8.7
33.6
26.6
Dead
8.4
10.4
27.6
8.8
8.3
15.6
New York
Healthy
61.2
59.9
54.5
60.4
36.8
37.9
(Adirondacks)
Declining
25.8
30.6
26.1
32.5
43.4
44.4
Dead
13.0
9.5
19.4
7.1
19.8
17.7
New York
Healthy
1.3
23.3
17.6
14.8
—
—
(Tug Hill)
Declining
81.5
66.2
70.9
71.2
—
—
Dead
17.2
10.5
11.4
14.0
—
—
V ermont
Healthy
82.5
78.7
44.4
92.4
79.8
66.3
Declining
10.4
13.1
29.1
2.9
13.9
21.1
3/
Dead
7.1
8.2
26.5
4.7
6.3
12.6
West Virginia
Healthy
62.0
58.0
32.1
56.0
53.7
18.0
Declining
20.0
27.5
33.5
19.5
29.1
47.6
Dead
18.0
14.5
34.4
24.5
17.2
34.4
i/Data from New Hampshire,
New York,
and Vermont are
derived
from tables 4, 8, 12, and
16 of
Weiss, et al. (1985). Data from West Virginia from Table 9, Mielke et al. (1986).
¿/Balsam fir does not occur in mixture with red spruce in West Virginia.
¿/Does not include areas of spruce which could not be classified into mortality strata.
