sclerotia, CEGF, and Pg contents in soils from the aspect of comparative humus
chemistry will help clarify the implications of sclerotial formation in forest soils.
9.4 Altitudinal Distribution of Sclerotia in Surface Soils
Finally, detailed sclerotia distributions in surface soils were examined along an
altitudinal gradient in two mountains (Sakagami 2011). The objective of this study
is to obtain further knowledge of the function of sclerotia as an organic component of
soil by examinations of geographical distribution of sclerotia along altitudinal
gradient in temperate and arctic-alpine climatic zones in central and northern Japan.
Examinations were carried out at Mt. Iwaki (Aomori prefecture) and Mt. Ontake
along altitudinal gradients. Soil samples were collected from surface A horizon
(approximately 0–5 cm in depth). Twenty-two points were examined at Mt Iwaki
along the driveway and the trail: line 1 (Mt. Iwaki 1), from point 1 (40
37
0 41
00 N,
140
15
0 15
00 E; 400 m asl.) to point 10 (40
39
0 14
00 N, 140
18
0 02
00 E; 1480 m asl.); line
2 (Mt. Iwaki 2), from point 11 (40
37
0 56
00 N, 140
16
0 04
00 E; 484 m asl.) to point
Table 9.2 Soil profile data and sclerotia contents in Chokai
Horizon
Depth (cm)
Soil color
Soil texture
Sclerotia content
Weight
Count
(mg/g)
(grain/g)
Mt. Chokai 1
A
0
5YR2/2
LiC
0.30
5.29
AB
7
5YR3/4
CL
0.27
6.63
Bw
15
5YR4/6
CL
0.07
1.59
Mt. Chokai 2
A1
0
7.5YR2/1
LiC
0.23
2.80
A2
2
7.5YR3/4
LiC
0.44
3.47
Bw
5
7.5YR4/6
CL
0.07
1.61
Mt. Chokai 3
A1
0
7.5YR2/1
LiC
0.51
4.51
A2
5
7.5YR2/2
LiC
1.11
17.60
A3
9
7.5YR3/2
CL
1.15
22.91
Bs
17
7.5YR3/4
LC
0.11
2.59
Mt. Chokai 4
A1
0
7.5YR1.7/1
CL
2.53
3.95
A2
5
7.5YR3/2
CL
1.17
5.90
Bs
14
7.5YR4/4
LiC
0.06
1.29
Mt. Chokai 5
A1
0
7.5YR2/1
LiC
0.46
2.48
A2
6
7.5YR3/1
LiC
0.37
7.51
Bs
10
7.5YR4/4
LiC
0.10
1.95
9 Spatial Distribution of Sclerotia Grains in Forest Soils, Northern and Central. . .
163
chemistry will help clarify the implications of sclerotial formation in forest soils.
9.4 Altitudinal Distribution of Sclerotia in Surface Soils
Finally, detailed sclerotia distributions in surface soils were examined along an
altitudinal gradient in two mountains (Sakagami 2011). The objective of this study
is to obtain further knowledge of the function of sclerotia as an organic component of
soil by examinations of geographical distribution of sclerotia along altitudinal
gradient in temperate and arctic-alpine climatic zones in central and northern Japan.
Examinations were carried out at Mt. Iwaki (Aomori prefecture) and Mt. Ontake
along altitudinal gradients. Soil samples were collected from surface A horizon
(approximately 0–5 cm in depth). Twenty-two points were examined at Mt Iwaki
along the driveway and the trail: line 1 (Mt. Iwaki 1), from point 1 (40
37
0 41
00 N,
140
15
0 15
00 E; 400 m asl.) to point 10 (40
39
0 14
00 N, 140
18
0 02
00 E; 1480 m asl.); line
2 (Mt. Iwaki 2), from point 11 (40
37
0 56
00 N, 140
16
0 04
00 E; 484 m asl.) to point
Table 9.2 Soil profile data and sclerotia contents in Chokai
Horizon
Depth (cm)
Soil color
Soil texture
Sclerotia content
Weight
Count
(mg/g)
(grain/g)
Mt. Chokai 1
A
0
5YR2/2
LiC
0.30
5.29
AB
7
5YR3/4
CL
0.27
6.63
Bw
15
5YR4/6
CL
0.07
1.59
Mt. Chokai 2
A1
0
7.5YR2/1
LiC
0.23
2.80
A2
2
7.5YR3/4
LiC
0.44
3.47
Bw
5
7.5YR4/6
CL
0.07
1.61
Mt. Chokai 3
A1
0
7.5YR2/1
LiC
0.51
4.51
A2
5
7.5YR2/2
LiC
1.11
17.60
A3
9
7.5YR3/2
CL
1.15
22.91
Bs
17
7.5YR3/4
LC
0.11
2.59
Mt. Chokai 4
A1
0
7.5YR1.7/1
CL
2.53
3.95
A2
5
7.5YR3/2
CL
1.17
5.90
Bs
14
7.5YR4/4
LiC
0.06
1.29
Mt. Chokai 5
A1
0
7.5YR2/1
LiC
0.46
2.48
A2
6
7.5YR3/1
LiC
0.37
7.51
Bs
10
7.5YR4/4
LiC
0.10
1.95
9 Spatial Distribution of Sclerotia Grains in Forest Soils, Northern and Central. . .
163