Full name:
Africa SoilGrid properties
Version:
-
Organization or Author:
ISRIC - World Soil Information, in collaboration with The Earth Institute (Columbia University), ICRAF - World Agroforestry Centre, Nairobi and the International Center for Tropical Agriculture (CIAT).
Abstract:
Over the period 2008–2014, the AfSIS project has compiled two soil profiles / samples datasets: the Africa Soil Profiles database holding legacy soil profiles data and the Sentinel Sites database holding newly collected topsoil data, jointly consisting of around 28 thousand sampling locations and a total of 85 thousands samples. Using these soil point observations & measurements and an extensive collection of global (SoilGrids1km) and continental (Africa) environmental covariates, ISRIC - World Soil Information, in collaboration with The Earth Institute, Columbia University, World Agroforestry Centre, Nairobi and the International Center for Tropical Agriculture (CIAT), has produced predictions of soil properties for the whole African continent at 250 m spatial resolution at either two or six standard soil depths.
Service location:
Geographical Coverage:
Continental - Africa
GIS Data Type:
Raster
Spatial resolution:
250 m (250 x 250 m pixel)
Publication date:
2015-02-10
Reference period-start:
1960-01-01
Reference period-stop
2015-12-31
License:
Key Soil Properties:
Aluminium, Rock Horizon, Bulk Density, Cation Exchange Capacity, Clay, Coarse Fragments, Exchangeable acidity, Calcium, Magnesium, Sodium, Extractable Bases, Potassium, Nitrogen, Organic Carbon Content, pH, silt, sand
Soil deph coverage (cm):
Up to 200 cm
Soil Functions:
-
Soil Threats:
-
Citation:
Hengl T, Heuvelink GBM, Kempen B, Leenaars JGB, Walsh MG, Shepherd KD, et al. (2015) Mapping Soil Properties of Africa at 250 m Resolution: Random Forests Significantly Improve Current Predictions PLoS ONE 10(6): e0125814. doi:10.1371/journal.pone.0125814
Soil parameters overview
More Information on the model at the following link: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0125814
| Soil Parameter name | Unit of measurement | Description |
|---|---|---|
| af_ALUM3S_T__M_x_0_20_cm_250m | cmolc/kg | Exchangeable aluminium (Al3+ measured in 1M KCl solution) in cmolc/kg (fine earth) at 0-20 cm depth using two sets of Africa soil profiles data. |
| af_ALUM3S_T__M_x_20_50_cm_250m | cmolc/kg | Exchangeable aluminium (Al3+ measured in 1M KCl solution) in cmolc/kg (fine earth) at 20-50 cm depth predicted using two sets of Africa soil profiles data. |
| af_BDRICM_T__M_250m | cm | Depth to bedrock (R horizon) in cm, to maximum 175 cm, predicted using two sets of Africa soil profiles data. |
| af_BLD_T__M_s_0_5_cm_250m | kg/m3 | Bulk density of the soil fine earth (measured by core method) in kg / cubic-meter (kg/m3) at 0-5 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_BLD_T__M_s_100_200_cm_250m | kg/m3 | Bulk density of the soil fine earth (measured by core method) in kg / cubic-meter (kg/m3) at 100-200 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_BLD_T__M_s_15_30_cm_250m | kg/m3 | Bulk density of the soil fine earth (measured by core method) in kg / cubic-meter (kg/m3) at 15-30 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_BLD_T__M_s_30_60_cm_250m | kg/m3 | Bulk density of the soil fine earth (measured by core method) in kg / cubic-meter (kg/m3) at 30-60 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_BLD_T__M_s_5_15_cm_250m | kg/m3 | Bulk density of the soil fine earth (measured by core method) in kg / cubic-meter (kg/m3) at 5-15 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_BLD_T__M_s_60_100_cm_250m | kg/m3 | Bulk density of the soil fine earth (measured by core method) in kg / cubic-meter (kg/m3) at 60-100 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_CEC_T__M_s_0_5_cm_250m | cmolc/kg | Cation exchange capacity (CEC measured in 1 M NH4OAc buffered at pH 7) in cmolc/kg (fine earth) at 0-5 cm depth intervals predicted using the Africa Soil Profiles Database (AfSP) |
| af_CEC_T__M_s_100_200_cm_250m | cmolc/kg | Cation exchange capacity (CEC measured in 1 M NH4OAc buffered at pH 7) in cmolc/kg (fine earth) at 100-200 cm depth intervals predicted using the Africa Soil Profiles Database (AfSP) |
| af_CEC_T__M_s_15_30_cm_250m | cmolc/kg | Cation exchange capacity (CEC measured in 1 M NH4OAc buffered at pH 7) in cmolc/kg (fine earth) at 15-30 cm depth intervals predicted using the Africa Soil Profiles Database (AfSP) |
| af_CEC_T__M_s_30_60_cm_250m | cmolc/kg | Cation exchange capacity (CEC measured in 1 M NH4OAc buffered at pH 7) in cmolc/kg (fine earth) at 30-60 cm depth intervals predicted using the Africa Soil Profiles Database (AfSP) |
| af_CEC_T__M_s_5_15_cm_250m | cmolc/kg | Cation exchange capacity (CEC measured in 1 M NH4OAc buffered at pH 7) in cmolc/kg (fine earth) at 5-15 cm depth intervals predicted using the Africa Soil Profiles Database (AfSP) |
| af_CEC_T__M_s_60_100_cm_250m | cmolc/kg | Cation exchange capacity (CEC measured in 1 M NH4OAc buffered at pH 7) in cmolc/kg (fine earth) at 60-100 cm depth intervals predicted using the Africa Soil Profiles Database (AfSP) |
| af_CLYPPT_T__M_s_0_5_cm_250m | g/100g | Clay content (0-2 micro meter) in g/100g (w%) at 0-5 cm depths predicted using two sets of Africa soil profiles data |
| af_CLYPPT_T__M_s_100_200_cm_250m | g/100g | Clay content (0-2 micro meter) in g/100g (w%) at 100-200 cm depths predicted using two sets of Africa soil profiles data |
| af_CLYPPT_T__M_s_15_30_cm_250m | g/100g | Clay content (0-2 micro meter) in g/100g (w%) at 15-30 cm depths predicted using two sets of Africa soil profiles data |
| af_CLYPPT_T__M_s_30_60_cm_250m | g/100g | Clay content (0-2 micro meter) in g/100g (w%) at 30-60 cm depths predicted using two sets of Africa soil profiles data |
| af_CLYPPT_T__M_s_5_15_cm_250m | g/100g | Clay content (0-2 micro meter) in g/100g (w%) at 5-15 cm depths predicted using two sets of Africa soil profiles data |
| af_CLYPPT_T__M_s_60_100_cm_250m | g/100g | Clay content (0-2 micro meter) in g/100g (w%) at 60-100 cm depths predicted using two sets of Africa soil profiles data |
| af_CRFVOL_T__M_s_0_5_cm_250m | m3/100m3 | Volumetric coarse fragments content (estimated in the field) in v% (m3/100m3) at 0-5 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_CRFVOL_T__M_s_100_200_cm_250m | m3/100m3 | Volumetric coarse fragments content (estimated in the field) in v% (m3/100m3) at 100-200 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_CRFVOL_T__M_s_15_30_cm_250m | m3/100m3 | Volumetric coarse fragments content (estimated in the field) in v% (m3/100m3) at 15-30 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_CRFVOL_T__M_s_30_60_cm_250m | m3/100m3 | Volumetric coarse fragments content (estimated in the field) in v% (m3/100m3) at 30-60 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_CRFVOL_T__M_s_5_15_cm_250m | m3/100m3 | Volumetric coarse fragments content (estimated in the field) in v% (m3/100m3) at 5-15 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_CRFVOL_T__M_s_60_100_cm_250m | m3/100m3 | Volumetric coarse fragments content (estimated in the field) in v% (m3/100m3) at 60-100 cm depths predicted using the Africa Soil Profiles Database (AfSP) |
| af_EACKCL_T__M_s_0_5_cm_250m | cmolc/kg | Exchangeable acidity (H+Al measured in 1M KCl) in cmolc/kg (fine earth) at 0-5 cm depths predicted using two sets of Africa soil profiles data |
| af_EACKCL_T__M_s_100_200_cm_250m | cmolc/kg | Exchangeable acidity (H+Al measured in 1M KCl) in cmolc/kg (fine earth) at 100-200 cm depths predicted using two sets of Africa soil profiles data |
| af_EACKCL_T__M_s_15_30_cm_250m | cmolc/kg | Exchangeable acidity (H+Al measured in 1M KCl) in cmolc/kg (fine earth) at15-30 cm depths predicted using two sets of Africa soil profiles data |
| af_EACKCL_T__M_s_30_60_cm_250m | cmolc/kg | Exchangeable acidity (H+Al measured in 1M KCl) in cmolc/kg (fine earth) at 30-60 cm depths predicted using two sets of Africa soil profiles data |
| af_EACKCL_T__M_s_5_15_cm_250m | cmolc/kg | Exchangeable acidity (H+Al measured in 1M KCl) in cmolc/kg (fine earth) at 5-15 cm depths predicted using two sets of Africa soil profiles data |
| af_EACKCL_T__M_s_60_100_cm_250m | cmolc/kg | Exchangeable acidity (H+Al measured in 1M KCl) in cmolc/kg (fine earth) at 60-100 cm depths predicted using two sets of Africa soil profiles data |
| af_ECAX_T__M_x_0_20_cm_250m | cmolc/kg | Exchangeable calcium (Ca2+; measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at at 0-20 cm depth predicted using two Africa soil profiles datasets |
| af_ECAX_T__M_x_20_50_cm_250m | cmolc/kg | Exchangeable calcium (Ca2+; measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 20-50 cm depth predicted using two Africa soil profiles datasets |
| af_EMGX_T__M_x_0_20_cm_250m | cmolc/kg | Exchangeable magnesium (Mg2+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 0-20 cm depth predicted using two Africa soil profiles datasets. |
| af_EMGX_T__M_x_20_50_cm_250m | cmolc/kg | Exchangeable magnesium (Mg2+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 20-50 cm depth predicted using two Africa soil profiles datasets. |
| af_ENAX_T__M_x_0_20_cm_250m | cmolc/kg | Exchangeable sodium (Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 0-20 cm depth predicted using two Africa soil profiles datasets |
| af_ENAX_T__M_x_20_50_cm_250m | cmolc/kg | Exchangeable sodium (Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 20-50 cm depth predicted using two Africa soil profiles datasets |
| af_EXBX_T__M_s_0_5_cm_250m | cmolc/kg | Sum of exchangeable bases (Ca2+, Mg2+, K+, Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 0-5 cm depth predicted using two Africa soil profiles datasets |
| af_EXBX_T__M_s_100_200_cm_250m | cmolc/kg | Sum of exchangeable bases (Ca2+, Mg2+, K+, Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 100-200 cm depth predicted using two Africa soil profiles datasets |
| af_EXBX_T__M_s_15_30_cm_250m | cmolc/kg | Sum of exchangeable bases (Ca2+, Mg2+, K+, Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 15-30 cm depth predicted using two Africa soil profiles datasets |
| af_EXBX_T__M_s_30_60_cm_250m | cmolc/kg | Sum of exchangeable bases (Ca2+, Mg2+, K+, Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 30-60 cm depth predicted using two Africa soil profiles datasets |
| af_EXBX_T__M_s_5_15_cm_250m | cmolc/kg | Sum of exchangeable bases (Ca2+, Mg2+, K+, Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 5-15 cm depth predicted using two Africa soil profiles datasets |
| af_EXBX_T__M_s_60_100_cm_250m | cmolc/kg | Sum of exchangeable bases (Ca2+, Mg2+, K+, Na+ measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 60-100 cm depth predicted using two Africa soil profiles datasets |
| af_EXKX_T__M_x_0_20_cm_250m | cmolc/kg | Exchangeable potassium (K+; measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 2 depth intervals (0-20 cm and 20-50 cm) predicted using two Africa soil profiles datasets |
| af_EXKX_T__M_x_20_50_cm_250m | cmolc/kg | Exchangeable potassium (K+; measured in 1M NH4OAc buffered at pH 7 with part of the data converted from data measured according to Mehlich 3) in cmolc/kg (fine earth) at 2 depth intervals (0-20 cm and 20-50 cm) predicted using two Africa soil profiles datasets |
| af_NTO_T__M_x_0_20_cm_250m | g/kg | Total nitrogen (N) content in g/kg of the fine earth fraction at 0-20 cm depth measured according to the analytical procedures of wet oxidation and predicted using two sets of Africa soil profiles data. |
| af_NTO_T__M_x_20_50_cm_250m | g/kg | Total nitrogen (N) content in g/kg of the fine earth fraction at 20-50 cm depth measured according to the analytical procedures of wet oxidation and predicted using two sets of Africa soil profiles data. |
| af_ORCDRC_T__M_s_0_5_cm_250m | g/kg | Soil organic carbon content (measured by either wet oxidation or dry combustion at 900 C) in g/kg (fine earth) at 0-5 cm depths predicted using two sets of Africa soil profiles data. |
| af_ORCDRC_T__M_s_100_200_cm_250m | g/kg | Soil organic carbon content (measured by either wet oxidation or dry combustion at 900 C) in g/kg (fine earth) at 100-200 cm depths predicted using two sets of Africa soil profiles data. |
| af_ORCDRC_T__M_s_15_30_cm_250m | g/kg | Soil organic carbon content (measured by either wet oxidation or dry combustion at 900 C) in g/kg (fine earth) at 15-30 cm depths predicted using two sets of Africa soil profiles data. |
| af_ORCDRC_T__M_s_30_60_cm_250m | g/kg | Soil organic carbon content (measured by either wet oxidation or dry combustion at 900 C) in g/kg (fine earth) at 30-60 cm depths predicted using two sets of Africa soil profiles data. |
| af_ORCDRC_T__M_s_5_15_cm_250m | g/kg | Soil organic carbon content (measured by either wet oxidation or dry combustion at 900 C) in g/kg (fine earth) at 5-15 cm depths predicted using two sets of Africa soil profiles data. |
| af_ORCDRC_T__M_s_60_100_cm_250m | g/kg | Soil organic carbon content (measured by either wet oxidation or dry combustion at 900 C) in g/kg (fine earth) at 60-100 cm depths predicted using two sets of Africa soil profiles data. |
| af_PHIHOX_T__M_s_0_5_cm_250m | pH x 10 | Soil pH x 10 in H2O at 0-5 cm depths (to convert to pH values divide by 10) predicted using two sets of Africa soil profiles data |
| af_PHIHOX_T__M_s_100_200_cm_250m | pH x 10 | Soil pH x 10 in H2O at 100-200 cm depths (to convert to pH values divide by 10) predicted using two sets of Africa soil profiles data |
| af_PHIHOX_T__M_s_15_30_cm_250m | pH x 10 | Soil pH x 10 in H2O at 15-30 cm depths (to convert to pH values divide by 10) predicted using two sets of Africa soil profiles data |
| af_PHIHOX_T__M_s_30_60_cm_250m | pH x 10 | Soil pH x 10 in H2O at 30-60 cm depths (to convert to pH values divide by 10) predicted using two sets of Africa soil profiles data |
| af_PHIHOX_T__M_s_5_15_cm_250m | pH x 10 | Soil pH x 10 in H2O at 5-15 cm depths (to convert to pH values divide by 10) predicted using two sets of Africa soil profiles data |
| af_PHIHOX_T__M_s_60_100_cm_250m | pH x 10 | Soil pH x 10 in H2O at 60-100 cm depths (to convert to pH values divide by 10) predicted using two sets of Africa soil profiles data |
| af_SLTPPT_T__M_s_0_5_cm_250m | g/100g | Silt content (2-50 micro meter) in g/100g (w%) at 0-5 cm depth predicted using two sets of Africa soil profiles data. |
| af_SLTPPT_T__M_s_100_200_cm_250m | g/100g | Silt content (2-50 micro meter) in g/100g (w%) at 100-200 cm depth predicted using two sets of Africa soil profiles data. |
| af_SLTPPT_T__M_s_15_30_cm_250m | g/100g | Silt content (2-50 micro meter) in g/100g (w%) at 15-30 cm depth predicted using two sets of Africa soil profiles data. |
| af_SLTPPT_T__M_s_30_60_cm_250m | g/100g | Silt content (2-50 micro meter) in g/100g (w%) at 30-60 cm depth predicted using two sets of Africa soil profiles data. |
| af_SLTPPT_T__M_s_5_15_cm_250m | g/100g | Silt content (2-50 micro meter) in g/100g (w%) at 5-15 cm depth predicted using two sets of Africa soil profiles data. |
| af_SLTPPT_T__M_s_60_100_cm_250m | g/100g | Silt content (2-50 micro meter) in g/100g (w%) at 60-100 cm depth predicted using two sets of Africa soil profiles data. |
| af_SNDPPT_T__M_s_0_5_cm_250m | g/100g | Sand content (50-2000 micro meter) in g/100g (w%) at 0-5 cm depths predicted using two sets of Africa soil profiles data. |
| af_SNDPPT_T__M_s_100_200_cm_250m | g/100g | Sand content (50-2000 micro meter) in g/100g (w%) at 100-200 cm depths predicted using two sets of Africa soil profiles data. |
| af_SNDPPT_T__M_s_15_30_cm_250m | g/100g | Sand content (50-2000 micro meter) in g/100g (w%) at 15-30 cm depths predicted using two sets of Africa soil profiles data. |
| af_SNDPPT_T__M_s_30_60_cm_250m | g/100g | Sand content (50-2000 micro meter) in g/100g (w%) at 30-60 cm depths predicted using two sets of Africa soil profiles data. |
| af_SNDPPT_T__M_s_5_15_cm_250m | g/100g | Sand content (50-2000 micro meter) in g/100g (w%) at 5-15 cm depths predicted using two sets of Africa soil profiles data. |
| af_SNDPPT_T__M_s_60_100_cm_250m | g/100g | Sand content (50-2000 micro meter) in g/100g (w%) at 60-100 cm depths predicted using two sets of Africa soil profiles data. |