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

PROFILE PROFILE 217 217
Legend Legend unit: unit: Du2 Du2
Soil Soil classification: classification: lIaplic lIaplic Acrisol Acrisol (FAO) (FAO)
Typic Typic Paleudult Paleudult (Soil (Soil Taxonomy) Taxonomy)
Description:
Description:
On On 14-08-95 14-08-95 by by Gerard Gerard Hazeu Hazeu
Location: Location:
Elevation: Elevation:
Landform Landform and and slope: slope: Rolling Rolling uplands; uplands; lower lower slope slope 20% 20%
Parent Parent material: material: Gneisses Gneisses and/or and/or migmatites migmatites of of the the Precambrian Precambrian shield shield
Vegetation: Vegetation:
Forest Forest
Drainage: Drainage:
Moderately Moderately well well drained drained
Soil: Soil:
Very Very deep, deep, yellowish yellowish brown brown sandy sandy clay clay to to clay clay with with sandy sandy loam loam to to loamy loamy
sand sand topsoil topsoil
Depth Depth (cm) (cm)
0- 0- 4 4
4- 4- 16 16
16- 16- 36 36
36-100 36-100
100-160 100-160
Hor. Hor.
About2.S About2.S km km SW SW ofMelen ofMelen village; village; 3°02'80 3°02'80 Nand Nand 10°31'64 10°31'64 E E
170m 170m
Description Description
Ah Ah very very dark dark brown brown (lOYR2/2); (lOYR2/2); sandy sandy loam; loam; weak weak very very fine fine crumb crumb and and
weakly weakly coherent coherent single single grain; grain; loose, loose, non non sticky sticky and and slightly slightly plastic; plastic;
common common to to many, many, fine fine to to medium medium roots; roots; clear clear and and smooth smooth transition transition to to
AE AE yellowish yellowish brown brown (lOYRS/4); (lOYRS/4); loamy loamy sand; sand; weak weak very very fine fine subangular subangular
blocky blocky and and weakly weakly coherent coherent single single grain; grain; very very friable, friable, non non sticky sticky and and non non
plastic; plastic; few few to to common, common, very very fine fine to to fine fine roots; roots; gradual gradual and and smooth smooth
transition transition to to
Bwsl Bwsl yellowish yellowish brown brown (IOYRS/6); (IOYRS/6); sandy sandy loam; loam; few few (5 (5 -10%) -10%) fine fine distinct distinct diffuse diffuse
7.5YR5/8 7.5YR5/8 moUles; moUles; weak weak fine fine subangular subangular blocky blocky and and weakly weakly coherent coherent
single single grain; grain; very very friable, friable, non non sticky sticky and and slightly slightly plastic; plastic; few few very very fine fine to to
fine fine roots; roots; gradual gradual and and wavy wavy transition transition to to
Bws2 Bws2 yellowish yellowish brown brown (lOYRS/8); (lOYRS/8); gravelly gravelly sandy sandy clay clay loam; loam; few few (10%) (10%) fine fine to to
medium, medium, distinct distinct diffuse diffuse 7.SYR5/8 7.SYR5/8 mottles; mottles; few few small small hard hard spherical spherical iron iron
concretions; concretions; weak weak to to moderate, moderate, very very fine fine to to fine fine angular angular to to 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; gradual gradual and and wavy wavy transition transition to to
Bv Bv yellowish yellowish brown brown (lOYR5/8); (lOYR5/8); gravelly gravelly clay; clay; many many (30%) (30%) medium medium distinct distinct
to to prominent, prominent, clear clear IOYR7/8 IOYR7/8 moUles; moUles; 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 to to moderate, moderate, very very fine fine to to fine fine
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
AE AE
Bwsl Bwsl
Bws2 Bws2
Bv Bv
Horizon Horizon
Ah Ah
AE AE
Bwsl Bwsl
Bws2 Bws2
Bv Bv
Horizon Horizon
Ah Ah
AE AE
BwsI BwsI
Bws2 Bws2
Bv Bv
Profile Profile 217 217
Particle Particle size size distribution distribution
Depth Depth (cm) (cm) % % of of fine fine earth; earth; in in Ilm Ilm
pH pH