[en] Landscape Ecological Survey of the Bipindi-Akom II ... - ITTO

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PROFILE 141
Legend unit: DuI
Soil classification: Acri-xanthic Ferralsol (FAO)
Typic Kandiudult (Soil Taxonomy)
Description:
On 27-06-95 by Gerard Hazeu
Location:
About S km NE of Adjap village; 2°55'99 Nand 10°37'29 E
Elevation:
350 m
Landform and slope: Undulating to rolling uplands; lower slope 10 - 15%
Parent material: Gneisses and/or migmatites of the Precambrian shield
Vegetation:
Forest
Drainage:
Well drained
Soil:
Very deep, yellowish brown sandy clay to clay with loamy sand to sandy
clay loam topsoil
Depth (cm)
0- 5
5- 15
15- 55
55-136
136-167
167-185
Hor.
Description
Ah dark yellowish brown (IOYRJ/4); sandy loam; weak fine crumb; very
friable, non sticky and slightly plastic; common to many, very fine to
medium roots; clear and smooth transition to
BA dark yellowish brown (I OYRJ/6); sandy clay loam; weak to moderate, very
fine to fine crumb to subangular blocky; friable, slightly sticky and slightly
plastic; few very fine to fine roots; gradual and smooth transition to
Bwsl yellowish brown (I OYR5/6); sandy clay; moderate very fine to fine
subangular blocky; friable, slightly sticky and slightly plastic; common
fine to medium roots; gradual and smooth transition to
Bws2 yellowish brown (IOYR5/S); slightly gravelly sandy clay; very few (2%)
fine faint diffuse 7.5YR5/S mottles; moderate very fine to fine subangular
blocky; friable, slightly sticky and slightly plastic; few to common, fine to
medium roots; gradual and irregular transition to
Bws3 yellowish brown (IOYR5/S); gravelly sandy clay; few (10%) fine faint
diffuse 7.5YR5/S mottles; few small hard spherical iron concretions; weak
to moderate, very fine to fine subangular blocky; friable, slightly sticky
and slightly plastic; few fme to medium roots; clear and smooth transition
to
Bv yellowish brown (IOYR5/8); gravelly sandy clay; many (15%) fine distinct
clear 2.5YR4/S mottles; frequent small to large, hard angular to spherical
iron concretions; weak to moderate, very fine to fine subangular blocky;
friable, slightly sticky and slightly plastic; very few very fine to fine roots.
Horizon
Ah
BA
Bwsl
Bws2
Bws3
Bv
Horizon
Ah
BA
Bwsl
Bws2
Bws3
Bv
Horizon
Ah
BA
Bwsl
Bws2
Bws3
Bv
Profile 141
Particle size distribution
Depth (cm) % of fme earth; in pm
pH