Geoscience Reference
In-Depth Information
Table 21.1 (continued)
Horizon a
Org. C (%) Clay (%) CEC (cmol(+)/kg) Base sat. (%) Al c
Depth (cm) Munsell color (moist) pH
References
Bo2
40-66
1.19
38.5
0.3b
Bth1
66-91
1.37
48.8
0.4b
Bth2
91-121
1.6
49.7
0.5b
Bth3
121-150
1.14
50.0
0.4b
Bt4
150-190
0.74
52.0
0.3b
Pedon 16: Rwanda
Nizeyimana and Bicki ( 1992 )
Ap
0-30
7.5YR 5/6
4.7
3.4
35.1
22.8
9
Bw
30-39
7.5YR 5/6
4.6
1.9
39.2
21.1
14
Bh
39-57
7.5YR 5/4
4.6
1.9
40.7
20.5
8
C/B
57-86
7.5YR 5/6
4.7
1.6
34.9
16.4
9
Cr
86-150
7.5YR 6/8
4.3
0.6
12.8
Pedon 17: Rwanda
Nizeyimana and Bicki ( 1992 )
Ap
0-27
5YR 4/4
4.7
5.3
50.8
33.3
11
Bw
27-72
5YR 5/6
4.7
2.4
52.4
25.3
16
Bh
72-106
5YR 5/4
4.9
2.0
51
24.7
11
C/B
106-149
5YR 5/6
4.5
1.9
44.8
25.0
10
Cr1
149-218
5YR 5/6
4.5
1.0
50.3
17.4
15
*Pedon 18: profile 72, Congo
Sys ( 1972 )
Ap
0-21
5YR 2/1
5.9
4.3
52.8
A1
21-35
5YR 3/1
5.5
2.7
50.2
AB
35-48
5YR 3/3
5.3
1.20
49.1
Bo
48-68
5YR 4/4
5.2
0.73
51.3
Bso1
68-95
5YR 3/3
4.9
0.78
58.7
Bso2
95-163
5YR 3/3
4.9
-
63.4
Bso3
163-200
5YR 3/3
4.9
-
65.6
b Pedon 19: profile 75, Congo
Sys ( 1972 )
A1
0-12
10YR 3/2
5.4
4.64
43.6
AB
12-30
10YR 4/3
4.8
2.08
44.7
 
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