Reference soil Côte d'Ivoire 5: Gleysol

Code: 
CI005
Latitude: 
5.88
Longitude: 
-7.33
Description: 
A poorly drained, deep soil (80-125 cm) with a porous massive structure, slightly coherent, below 37 cm. There are oxidation mottles almost throughout the profile. Along roots there are often "mottles" of organic matter.
Collection date: 
January, 1985
Soil surveyor: 
Van Kekem AJ
Location: 
Tai Forest Reserve, valley floor
Climate classification: 
Aw
Classification: 

WRB 2006:

WRB 1998:

Haplic Gleysol(Eutric)
Eutric Gleysol
12-50 cm albic horizon  
12-75 cm ferralic horizon  

 

FAO-UNESCO-ISRIC 1988:

FAO-UNESCO 1974:

Albi- Eutric Gleysol
Eutric Gleysol
0-12 cm ochric A horizon  
12-50 cm albic E horizon  
12-75 cm ferralic B horizon  
gleyic properties  
0-12 cm ochric A horizon  
12-120 cm oxic B horizon  
hydromorphic properties  
Physiography: 
The altitude of the soil profile relative to mean sea level, specified in meters 155 m asl
Regional landform peneplain
Topography of the surrounding country rolling
Physiographic Unit in the immediate surrounding of the site floodplain in dissected peneplain
The slope refers to the inclination of the land immediately surrounding the site. The measured or estimated slope angle is specified to the nearest per cent 4 %
The physiographic position of the site where the profile is located lower slope
Form of the slope surrounding the site concave
Slope Aspect of the site north-east
Parent material: 
The main parent rock/ material over which the soil has been formed (1st entry) metamorphic rock
Mode of Accumulation or deposition of parent material (1st entry) residual material
Texture of parent material (1st entry) loamy
Weathering status of solid rock (1st entry) highly
Resistance against weathering (solid rock) (1st entry) moderate
Depth1 of lithological boundary cm
The main parent rock/ material over which the soil has been formed (2nd entry)  
Resistance against weathering (solid rock) (2nd entry)  
Soil Depth; depth to which roots can easily penetrate throughout the year cm
Remarks on Parent Materials Precambrian migmatite rich in biotite
Hydrology and drainage: 
Depth of groundwater table 0 cm
Groundwater Top 40 cm
Groundwater Bottom 80 cm
Kind of groundwater table groundwater table observed
Top Stagnating Layer cm
Bottom Stagnating Layer cm
Runoff slow
Flooding frequency irregular
Estimated permeablity (class) of least permeable part of the profile high
Drainage Class poor
To Drainage Class  
Moisture conditions of the profile: dry from -to cm
Moisture conditions of the profile: moist from -to 0-120 cm
Wet From - To cm
Land use: 
Current land use at the site nature and game preservation
Major crops  
Main type of irrigation  
Rotation scheme  
Vegetation Type;The natural vegetation at the site evergreen forest
Status of vegetation primary
Remarks on Land Use / Vegetation VEGETATION: Tropical lowland forest; national park
Erosion: 
Soil erosion type (1st entry) splash
Intensity of the soil erosion type (1st entry) moderate
Occurrence of soil aggradation present
Slope Stability
Surface characteristics: 
Microrelief type: small-scale differences in relief in the direct vicinity of the site  
Microrelief Height  
Rockiness none
Stoniness none
Average size of stones  
Shape of stones (on average)  
Cracks no cracks observed
Slaking of aggregates by tillage, rainfall or frost no surface slaking/crusting observed
Evidence of salt non-saline
Evidence of alkali non-alkaline

Ah 0-12 cm : (dark) brown (10YR 4/3, moist) , loamy sand , moderate very fine and fine subangular blocky and moderate medium subangular blocky , very friable non sticky non plastic , many micro to fine tubular and many micro to fine interstitial pores , many very fine to coarse roots , non calcareous , gradual irregular boundary to ,
Bw 12-37 cm : light yellowish brown (10YR 6/4, moist) , sandy loam , weak fine subangular blocky , very friable slightly sticky non plastic , few (2-5%) fine faint diffuse mottles (7.5 YR 5/8) , many micro to fine tubular and many micro to fine interstitial pores , common very fine to coarse roots , non calcareous , gradual smooth boundary to ,
BCg 37-50 cm : very pale brown (10YR 7/3, moist) , sandy loam , weakly coherent porous massive , very friable slightly sticky slightly plastic , common (5-15%) fine distinct diffuse mottles (5 Y 7/7) and many (15-40%) fine distinct mottles (7.5 YR 5/8) , common micro to fine tubular pores , few fine and medium roots , non calcareous , clear smooth boundary to ,
Cr1 50-75 cm : light grey (5Y 7/1, moist) , sandy loam , weakly coherent porous massive , very friable slightly sticky slightly plastic , common (5-15%) fine prominent clear mottles (7.5 YR 5/8) , common micro to very fine tubular pores , few fine and medium roots , non calcareous , gradual smooth boundary to ,
Cr2 75-100 cm : undescribed colour (10Y 8/1, moist) , sandy loam , weakly coherent porous massive , very friable slightly sticky slightly plastic , few (2-5%) fine distinct diffuse mottles (10 YR 6/6) , few micro and very fine tubular pores , few very fine and fine roots , few coarse gravel quatrz fragments , non calcareous , clear smooth boundary to ,
Cr3 100-120 cm : undescribed colour (10Y 7/1, moist) , sandy clay loam slightly gravelly , weakly coherent porous massive , very friable slightly sticky slightly plastic , few (2-5%) fine mottles , common very fine and fine tubular pores , few coarse gravel quartz fragments , non calcareous ,