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

PROFILE PROFILE 201 201
Legend Legend unit: unit: Cu2 Cu2
Soil Soil classification: classification: Acri-xanthic Acri-xanthic Ferralsol Ferralsol (FAO) (FAO)
Typic Typic Kandiudox Kandiudox (Soil (Soil Taxonomy) Taxonomy)
Description: Description:
Location: Location:
About About 1.5 1.5 km km S S ofEngomba ofEngomba village; village; 3°04'84 3°04'84 Nand Nand 10°39'45 10°39'45 E E
Elevation: Elevation:
Landforrn Landforrn and and slope: slope: Rolling Rolling uplands; uplands; summit, summit, upper upper slope slope 10 10 -- 15% 15%
Parent Parent material: material: Gneisses Gneisses of of the the Prccambrian Prccambrian shield shield
Vegetation: Vegetation:
Forest Forest
Drainage: Drainage:
Soil: Soil:
Very Very deep, deep, yellowish yellowish brown brown clay clay with with sandy sandy clay clay loam loam to to sandy sandy clay clay
topsoil topsoil
Depth Depth (cm) (cm)
0- 0- 5 5
5- 5- 18 18
18- 18- 61 61
61- 61- 95 95
95-152 95-152
152-185 152-185
Hor. Hor.
On On 10-08-95 10-08-95 by by Gerard Gerard Hazeu Hazeu
390m 390m
Well Well drained drained
Description Description
Ah Ah very very dark dark brown brown (7.5YR2.5/3); (7.5YR2.5/3); sandy sandy clay clay loam; loam; moderate moderate to to strong, strong, very very
fine fine to to fine fine crumb crumb to to subangular subangular blocky; blocky; very very friable, friable, slightly slightly sticky sticky and and
slightly slightly plastic; plastic; common common to to many, many, very very fine fine to to fine fine roots; roots; clear clear and and smooth smooth
transition transition to to
BA BA dark dark yellowish yellowish brown brown (I (I OYR4/6); OYR4/6); sandy sandy clay clay to to clay; clay; moderate moderate to to strong, strong,
very very fine fine to to fine fine crumb crumb to to subangular subangular blocky; blocky; friable, friable, slightly slightly sticky sticky and and
slightly slightly plastic; plastic; few few to to common, common, fine fine to to coarse coarse roots; roots; clear clear and and smooth smooth
transition transition to to
Bws Bws I I yellowish yellowish brown brown (IOYR5/6); (IOYR5/6); clay; clay; moderate moderate very very fine fine to to fine fine subangular subangular
blod;y; blod;y; friable, friable, slightly slightly stick), stick), and and slightly slightly plastic; plastic; few few to to common, common, fine fine to to
medium medium roots; roots; gradual gradual and and wavy wavy transition transition to to
Bws2 Bws2 yellowish yellowish brown brown (IOYR5/8); (IOYR5/8); slightly slightly gravelly gravelly clay; clay; few few small small hard hard
spherical spherical iron iron concretions; concretions; weak weak to to moderate, moderate, fine fine to to medium medium subangular subangular
blocky; blocky; friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; very very few few to to few, few, very very
fine fine to to fine fine roots; roots; gradual gradual and and wavy wavy transition transition to to
Bws3 Bws3 yellowish yellowish brown brown (IOYR5/8); (IOYR5/8); slightly slightly gravelly gravelly clay; clay; very very few few «5%) «5%) fine fine
distinct distinct diffuse diffuse 2.5YR4/8 2.5YR4/8 mottles; mottles; few few small small hard hard spherical spherical iron iron
concretions; concretions; weak weak fine fine to to medium medium subangular subangular blocky; blocky; friable, friable, slightly slightly
stick), stick), and and slightly slightly plastic; plastic; very very few few to to few, few, fine fine to to medium medium roots; roots; gradual gradual
and and smooth smooth transition transition to to
Bws4 Bws4 yellowish yellowish brown brown (I0YR5/8); (I0YR5/8); gravelly gravelly clay; clay; many many (25%) (25%) fine fine to to medium, medium,
distinct distinct diffuse diffuse 2.5YR4/8 2.5YR4/8 mottles; mottles; few few small small to to large, large, hard hard irregular irregular to to
spherical spherical iron iron concretions; concretions; weak weak fine fine to to medium medium subangular subangular blocky; blocky;
friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; very very few few very very fine fine to to fine fine roots. roots.
Horizon Horizon
Ah Ah
BA BA
Bwsl Bwsl
Bws2 Bws2
Bws3 Bws3
Bws4 Bws4
Horizoo Horizoo
Ab Ab
BA BA
Bwsl Bwsl
Bws2 Bws2
Bws3 Bws3
Bws4 Bws4
Horizoo Horizoo
Ab Ab
BA BA
Bwsl Bwsl
Bws2 Bws2
Bws3 Bws3
Bws4 Bws4
Profile Profile 201 201
Particle Particle size size distribution distribution
Depth Depth (cm) (cm) % % of of fine fine earth; earth; in in I'm I'm
pH pH