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

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PROFILE 139
Legend Legend unit: unit: DuI
Soil classification: Acri-xanthic Ferralsol (FAO)
Typic Kandiudult (Soil Taxonomy)
Description:
On 26-06-95 by Gerard Hazeu
Location:
About About I I km km NW NW ofToko ofToko village; village; Z056'59 Z056'59 Nand Nand 10°29'84 10°29'84 E E
Elevation:
140m
Landform and slope: Undulating to rolling uplands; lower slope 10%
Parent Parent material: material: Gneisses Gneisses of of the the Precambrian Precambrian shield shield
Vegetation:
Forest Forest
Drainage: Drainage:
Moderately Moderately well well to to well well drained drained
Soil:
Very deep, deep, yellowish yellowish brown brown sandy sandy clay clay to to clay clay with with loamy loamy sand sand to to sandy sandy
loam topsoil
Depth Depth (cm) (cm)
0- 0- 7
7- 7- 17 17
17- 42
42- 82
82-157 82-157
157-205 157-205
1I0r. 1I0r.
Description
Ah Ah dark brown brown (lOYR3/3); (lOYR3/3); sandy loam; loam; moderate moderate very fine fine to to fine fine crumb crumb to to
subangular subangular blocky; blocky; very very friable, friable, non non sticky, sticky, slightly slightly plastic plastic and and weakly weakly
smeary; smeary; common common to to many, many, very very fine fine to to fine roots; roots; clear and and smooth smooth
transition transition to to
BA BA dark dark yellowish yellowish brown brown (IOYR4/6); (lOYR4/6); sandy sandy clay clay loam; loam; weak weak to to moderate, moderate, very very
fine fine to fine subangular subangular blocky; friable, friable, slightly slightly sticky and and slightly slightly plastic; plastic;
very very few, fine to medium medium roots; roots; clear clear and smooth transition to
Bwsl Bwsl yellowish brown (IOYR5/6); sandy clay loam; moderate very fine to fine
sub sub angular block],; block]'; friable, slightly sticky and slightly plastic; very few to
few, few, very fine fine to to fine fine roots; gradual gradual and and smooth smooth transition transition to to
Bws2 yellowish brown (lOYR5/8); sandy sandy clay; clay; few (2-5%) (2-5%) fine faint diffuse
7.5YR5/8 monies; weak to moderate, very fine to fine subangular blocky;
friable, slightly sticky and slightly plastic; few very fine to fine roots;
gradual gradual and and smooth smooth transition transition to to
Bws3 yellowish brown (IOYR5/8); sandy clay to clay; clay; few (10%) fine faint
diffuse 5YR5/8 monies; weak to moderate, very fine to fine subangular
block]'; block],; friable, friable, slightly slightly stick], stick], and and slightly slightly plastic; plastic; very very few few very very fine fine roots; roots;
gradual gradual and and smooth smooth transition transition to to
Bv Bv yellowish yellowish brown brown (lOYR5/8); (lOYR5/8); slightly slightly gravelly gravelly sandy sandy clay clay to to clay; clay; many many
(25%) (25%) medium medium distinct distinct clear clear 2.5YR4/8 monies; monies; very very few few to to few, few, small small soft soft
to hard, hard, spherical spherical to to irregular irregular iron iron concretions; concretions; weak weak fine fine subangular subangular
blocky; friable, friable, slightly slightly sticky and slightly plastic; plastic; no roots.
Horizon Horizon Depth (cm)
Profile 139
Particle size distribution
% % of of fine fine earth; earth; in in J.lm J.lm
pH