Geoscience Reference
In-Depth Information
Table 21.1
Analytical properties of soils with sombric horizons (Bockheim
2012
)
Horizon
a
Org. C (%) Clay (%) CEC (cmol(+)/kg) Base sat. (%) Al
c
Depth (cm) Munsell color (moist) pH
References
Pedon 1: Bosque maduro; Oaxaca, Mexico
Bautista Cruz (
2005
)
O
0-15
10YR 2/2
3.55
43.5
84.5
43
1.48a
Bh
15-30
10YR 4/2
3.73
4.9
13.2
13.8
14
3.12a
Bs
30-64
10YR 7/6
4.12
0.79
44
20.2
18
6.24a
CB
64-100
10YR 5/8
4.59
1.43
47
17.8
17
2.11a
Pedon 2: P1; Santa Catarina, Brazil
Almeida et al. (
2009
)
A1
0-25
7.5YR 3/3
3.7
KCl
1.66
36
6.95
52
8.3a
A2
25-37
7.5YR 3/4
3.6
KCl
1.08
43
7.91
43
13.1a
AB
37-67
5YR 3/2
3.6
KCl
1.6
59
9.16
25
27.6a
Bt1
67-120
2.5YR 3.5/6
3.5
KCl
0.92
65
8.94
21
36.3a
Pedon 3: P2; Santa Catarina, Brazil
Almeida et al. (
2009
)
A
0-34
7.5YR 4/5
3.7
KCl
1.36
37
5.69
27
21.1a
BA
34-77
7.5YR 3/4
3.7
KCl
1.12
60
8.91
46
17.5a
Bt1
77-94
5YR 3/4
3.5
KCl
0.76
65
6.69
27
34.5a
Pedon 4: P3; Santa Catarina, Brazil
Almeida et al. (
2009
)
A
0-40
7.5YR 4/6
3.5
1.57
37
6.47
20
29.9a
AB
40-70
7.5YR 3/2
3.5
1.29
53
8.19
19
37.1a
BA
70-84
7.5YR 3/4
3.5
0.58
54
6.81
21
33.3a
Bt1
84-98
5YR 3/4
3.5
0.74
57
6.7
22
38.0a
Pedon 5: RP; Santa Catarina, Brazil
Almeida et al. (
2009
)
A1
0-20
10YR 3.5/4
4.7
1.46
19
4.23
0.1b
A2
20-50
10YR 3/4
4.9
0.73
20
3.62
0.15b
AB
50-73
9.0YR 2.5/2
4.6
1.03
28
6.64
0.28b
BA
73-90
8.5YR 2.5/2
4.6
1.06
37
6.30
0.43b
Bt1
90-113
2.5YR 4/6
4.7
0.80
46
4.84
b
(continued)
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