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

PROFILE 218
Legend unit:
Soil Soil classification:
classification:
Description: Description:
Location: Location:
Elevation: Elevation:
Landform Landform and slope:
Parent material:
Vegetation: Vegetation:
Drainage: Drainage:
Soil:
Depth Depth (cm) (cm) 1I0r. 1I0r.
0-3 Ah Ah
w
0 3-16125 AE AE
16125-S0 16125-S0 Bwsl Bwsl
80-lIS 80-11S Bv
118-130 118-130 BC BC
Du2 Du2
Ferralic plinthic Acrisol (FAO)
Plinthudult Plinthudult (Soil (Soil Taxonomy) Taxonomy)
On 14-08-95 by Gerard Hazeu
About About 2.5 km SW SW of Melen Melen village; village; 3 3 °02'80 °02'80 Nand Nand 10°31 10°31 '64 '64 E E
220 220 m m
Rolling uplands; upper slope 15%
Gneisses Gneisses and/or and/or migmatites migmatites of of the the Precambrian Precambrian shield shield
Forest Forest
Moderately Moderately well drained
Deep, yellowish brown, sandy clay to clay with sandy loam to loamy sand
topsoil topsoil
Description
very very dark dark greyish greyish brown brown (IOYR3/2); (IOYR3/2); 10anlY 10anlY sand; sand; weak weak very very fine fine crumb crumb
and weakly coherent single grain; loose, non sticky and non 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
yellowish brown (IOYR5/4); sandy loam; weak very fine subangular
block-y and moderately coherent single grain; very friable, non sticky and
slightly slightly plastic; few to common, fine to medium roots; gradual and wavy
transition to
brownish brownish yellow (IOYR6/S); gravelly sandy clay loam; many (15 - 25%)
medium medium faint faint to to distinct, distinct, diffuse diffuse 7.5YR5/S 7.5YR5/S mottles; mottles; few few small small hard hard
spherical spherical iron iron concretions; concretions; weak weak to moderate, moderate, very very fine fine to to fine fine subangular subangular
blocky; blocky; friable, slightly slightly sticky and slightly plastic; very few to common,
fine fine to to medium medium roots; roots; gradual gradual and and smooth smooth transition transition to to
light light yellowish yellowish brown brown (IOYR6/4); (IOYR6/4); very very gravelly gravelly sandy sandy clay; clay; many many (25 (25 --
40%) 40%) medium medium distinct distinct diffuse diffuse 7.5YR6/8 7.5YR6/8 mottles; mottles; frequent frequent small small hard hard
spherical spherical iron iron concretions; concretions; weak weak to moderate, moderate, very very fine fine to fine fine subangular subangular
blocky; friable, slightly slightly sticky and slightly plastic; very few very fine to
fine roots; gradual and smooth transition to
light light yellowish yellowish brown brown (IOYR6/4); (IOYR6/4); very very gravelly gravelly sandy sandy clay; clay; many many (25 (25 --
40%) 40%) medium medium distinct distinct diffuse diffuse 7.5YR6/8 7.5YR6/8 mottles; mottles; few few small small to to large, large, soft soft
irregular irregular to to angular angular iron iron concretions; concretions; weak weak very very fine fine subangular subangular blocky blocky and and
moderately coherent massive; friable, slightly sticky sticky and slightly slightly plastic;
no no roots. roots.
Horizon Horizon Depth Depth (cm) (cm)
Profile 218
Particle size distribution distribution
% % of of fine fine earth; earth; in in flm flm
pH pH