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

VI VI
PROFILE PROFILE 181 181
Legend Legend unit: unit:
Soil Soil classification:
classification:
Description: Description:
Location: Location:
Elevation: Elevation:
Landform Landform and and slope: slope:
Parent Parent material: material:
Vegetation: Vegetation:
Drainage: Drainage:
Soil: Soil:
Depth Depth (cm) (cm) Hor. Hor.
0- 0- 3 3 Ah Ah
3- 3- 15 15 BA BA
15- 15- 30 30 Bwsl Bwsl
30- 30- 71 71 Bws2 Bws2
71-145 71-145 Bws3 Bws3
145-175 145-175 Bv Bv
Cu2IDul Cu2IDul
Acri-xanthic Acri-xanthic Ferralsol Ferralsol (FAO) (FAO)
Typic Typic Kandiudult Kandiudult (Soil (Soil Taxonomy) Taxonomy)
On On 26-07-95 26-07-95 by by Gerard Gerard Hazeu Hazeu
About About 2 2 km km NE NE ofObo'otomba ofObo'otomba village; village; 3°04'11 3°04'11 Nand Nand 10°35'68 10°35'68 E E
Unknown Unknown
Rolling Rolling uplands; uplands; summit, summit, upper upper slope slope 10% 10%
Gneisses Gneisses and/or and/or migmatites migmatites of of the the Precambrian Precambrian shield shield
Forest Forest
Well Well drained drained
Deep, Deep, yellowish yellowish brown brown clay clay with with sandy sandy clay clay loam loam to to sandy sandy clay clay topsoil topsoil
Description Description
dark dark brown brown (IOYR3/3); (IOYR3/3); sandy sandy clay clay loam; loam; moderate moderate very very fine fine to to fine fine crumb crumb
to to subangular subangular blod:y; blod:y; very very friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; few few
to to abundant, abundant, very very fine fine to to medium medium roots; roots; abrupt abrupt and and smooth smooth transition transition to to
dark dark yellowish yellowish brown brown (IOYR4/6); (IOYR4/6); sandy sandy clay clay loam; loam; weak weak to to moderate, moderate, fine fine
angular angular to to sub sub angular angular blocky; blocky; friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic;
very very few few to to common, common, fine fine to to medium medium roots; roots; gradual gradual and and wavy wavy transition transition to to
yellowish yellowish brown brown (IOYR5/6); (IOYR5/6); sandy sandy clay clay to to clay; clay; moderate moderate fine fine subangular subangular
blod:y; blod:y; firm, firm, slightly slightly sticky sticky and and slightly slightly plastic; plastic; very very few few to to common, common, fine fine
to to medium medium roots; roots; gradual gradual and and smooth smooth transition transition to to
yellowish yellowish brown brown (I0YR5/8); (I0YR5/8); slightly slightly gravelly gravelly clay; clay; very very few few small small soft soft
irregular irregular iron iron concretions; concretions; weak weak to to moderate, moderate, fine fine subangular subangular blocky; blocky; firm, firm,
slightly slightly sticky sticky and and slightly slightly plastic; plastic; few few to to common, common, fine fine to to medium medium roots; roots;
gradual gradual and and smooth smooth transition transition to to
yellowish yellowish brown brown (IOYR5/8); (IOYR5/8); gravelly gravelly to to very very gravelly, gravelly, slightly slightly stony stony clay; clay;
few few (5%) (5%) fine fine faint faint diffuse diffuse 7.5YR5/8 7.5YR5/8 mottles; mottles; very very few few to to few, few, small small soft soft
to to hard, hard, irregular irregular to to spherical spherical iron iron concretions; concretions; weak weak very very fine fine to to fine fine
sub sub angular angular blocky; blocky; friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; few few very very
fine fine roots; roots; diffuse diffuse and and smooth smooth transition transition to to
yellowish yellowish brown brown (I (I OYR5/8); OYR5/8); gravelly gravelly clay; clay; few few to to frequent, frequent, small small soft soft to to
hard, hard, irregular irregular to to spherical spherical iron iron concretions; concretions; weak weak very very fine fine to to fine fine
subangular subangular blocky; blocky; friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; few few very very
Horizon Horizon
Ah Ah
BA BA
Bwsl Bwsl
Bws2 Bws2
Bws3 Bws3
Bv Bv
Horizon Horizon
Ah Ah
BA BA
Bwsl Bwsl
Bws2 Bws2
Bws3 Bws3
Bv Bv
Horizon Horizon
Ah Ah
BA BA
Bwsl Bwsl
Bws2 Bws2
Bws3 Bws3
Bv Bv
Profile Profile 181 181
Particle Particle size size distribution distribution
Depth Depth (cm) (cm) % % of of fine fine earth; earth; in in I'm I'm
pH pH