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

PROFILE PROFILE 203 203
Legend Legend unit unit E E in in Cu2 Cu2
Soil Soil classification: classification: Dystric Dystric Fluvisol Fluvisol (FAO) (FAO)
Lythic Lythic Endoaquent Endoaquent (Soil (Soil Taxonomy) Taxonomy)
Description:
Description:
On On 10-08-95 10-08-95 by by Gerard Gerard Ilazeu Ilazeu
Location: Location:
About About 1.5 1.5 km km S S of of Engomba Engomba village; village; 3 3 °04'84 °04'84 Nand Nand 10°39'45 10°39'45 E E
Elevation: Elevation:
340 340 m m
Landform Landform and and slope: slope: Rolling Rolling uplands; uplands; valley valley bottom bottom
Parent Parent material: material: Alluvial Alluvial deposits deposits derived derived from from gneisses gneisses of of the the Precambrian Precambrian shield shield
Vegetation: Vegetation:
Forest Forest
Drainage: Drainage:
Poorly Poorly drained drained
Soil: Soil:
Moderately Moderately deep, deep, grey grey sandy sandy loam loam with with very very dark dark brown brown topsoil topsoil
Depth Depth (cm) (cm)
0- 0- 4 4
4-15 4-15
15-43 15-43
43-68 43-68
Hor. Hor.
Description Description
Ah Ah very very dark dark brown brown (IOYR2/2); (IOYR2/2); sand; sand; moderately moderately coherent; coherent; very very friable, friable,
slightly slightly stick)', stick)', slightly slightly plastic plastic and and weakly weakly smeary; smeary; 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 light light yellowish yellowish brown brown (2.5Y6/4); (2.5Y6/4); slightly slightly gravelly gravelly sandy sandy loam; loam; weak weak very very
fine fine subangular subangular blocky; blocky; friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; few few to to
common, common, very very fine fine to to coarse coarse roots; roots; clear clear and and smooth smooth transition transition to to
Bolr Bolr light light yellowish yellowish brown brown (2.5Y6/3); (2.5Y6/3); gravelly gravelly and and slightly slightly stony stony sandy sandy loam; loam;
few few {I {I 0%) 0%) fine fine to to medium, medium, distinct distinct clear clear 7.5YR6/8 7.5YR6/8 mottles; mottles; weak weak very very fine fine
subangular subangular blocky; blocky; friable, friable, slightly slightly sticky sticky and and slightly slightly plastic; plastic; few few to to
common, common, very very fine fine to to coarse coarse roots; roots; abrupt abrupt and and irregular irregular transition transition to to
CB CB grey grey (2.5Y6/1); (2.5Y6/1); gravelly, gravelly, sandy sandy loam loam and and rock rock boulders; boulders; many many (25%) (25%)
medium medium distinct distinct clear clear 7.5YR5/8 7.5YR5/8 mottles; mottles; moderately moderately coherent coherent porous porous
massive massive structure; structure; no no roots. roots.
Horizon Horizon
Ah Ah
BA BA
Bolr Bolr
CB CB
Horizon Horizon
Ah Ah
BA BA
Bolr Bolr
CB CB
Horizon Horizon
Ah Ah
BA BA
Bolr Bolr
CB CB
Profile Profile 203 203
Particle Particle size size distribution distribution
Depth Depth (cm) (cm) % % offine offine earth; earth; in).lm in).lm
pH pH