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

PROFILE PROFILE 138 138
Legend Legend unit: unit:
Soil Soil classification:
classification:
Description:
Description:
Location: Location:
Elevation: Elevation:
Landforrn Landforrn and and slope: slope:
Parent Parent material: material:
Vegetation: Vegetation:
Drainage: Drainage:
Soil: Soil:
Depth Depth (cm) (cm) Hor. Hor.
0- 0- 5 5 Ah Ah
w w
w 5- 5- 12 12 BA BA
12- 12- 75 75 Bws Bws
75-100 75-100 Bo/r Bo/r
100-135 100-135 Cr Cr
E E in in Dui Dui
Ferrali-gleyic Ferrali-gleyic Cambisol Cambisol (FAO) (FAO)
Oxyaquic Oxyaquic Dystropept Dystropept (Soil (Soil Taxonomy) Taxonomy)
On On 26-06-95 26-06-95 by by Gerard Gerard Hazeu Hazeu
About About 2 2 km km NW NW ofToko ofToko village; village; 2° 2° 57'28 57'28 Nand Nand 10°29'02 10°29'02 E E
lOOm lOOm
Undulating Undulating to to rolling rolling uplands; uplands; valley valley bottom bottom
Alluvial Alluvial deposists deposists derived derived from from gneisses gneisses of of the the Precambrian Precambrian shield shield
Forest Forest
Poorly Poorly to to imperfectly imperfectly drained drained
Moderately Moderately deep, deep, yellow yellow loamy loamy sand sand to to sandy sandy loam loam with with humic humic topsoil topsoil
Description Description
very very dark dark brown brown (IOYR2/2); (IOYR2/2); loamy loamy sand; sand; weakly weakly coherent coherent structure structure and and
weak weak very very fine fine to to fine fine crumb crumb to to subangular subangular blocky; blocky; loose, loose, non non sticky, sticky,
slightly slightly plastic; plastic; many, many, very very fine fine to to fine fine roots; roots; clear clear and and smooth smooth transition transition
to to
yellowish yellowish brown brown (IOYR5/4); (IOYR5/4); loamy loamy sand; sand; weak weak very very fine fine to to fine fine subangular subangular
blocky; blocky; non non sticky sticky and and slightly slightly plastic; plastic; few few to to many, many, fine fine to to medium medium roots; roots;
gradual gradual and and smooth smooth transition transition to to
yellow yellow (IOYR7/8); (IOYR7/8); sandy sandy loam; loam; weak weak very very fine fine to to fine fine subangular subangular blocky; blocky;
slightly slightly sticky sticky and and slightly slightly plastic; plastic; very very few few to to few, few, fine fine to to medium medium roots; roots;
clear clear and and smooth smooth transition transition to to
yellow yellow (2.5Y7/6); (2.5Y7/6); gravelly gravelly loamy loamy sand; sand; few few (I (I 5%) 5%) medium medium prominent prominent clear clear
7.5YR5/8 7.5YR5/8 mottles; mottles; moderately moderately coherent coherent structure; structure; few few fine fine roots; roots; gradual gradual
and and smooth smooth transition transition to to
grey grey (IG6/5GY); (IG6/5GY); fine fine sand; sand; few few (5%) (5%) medium medium distinct distinct diffuse diffuse 7.5YR5/8 7.5YR5/8
mottles; mottles; weakly weakly to to moderately moderately coherent coherent structure; structure; few few fine fine roots. roots.
Profile Profile 138 138
Particle Particle size size distribution distribution
Horizon Horizon Depth Depth (cm) (cm) % % of of fine fine earth; earth; in).lm in).lm
pH pH