Full name:
iSDAsoil
Version:
0.13
Organization or Author:
Abstract:
iSDAsoil is a soil resource created by iSDA, containing soil property predictions at 30m resolution for the entire African continent.
Maps for over 20 different soil properties have been created at three different depth ranges (0-20, 20-50 and 0-200 cm). Soil property predictions were made using machine learning coupled with remote sensing data and a training set of over 100,000 analyzed soil samples. Included in the original resource there are images of predicted soil properties, model error and satellite covariates used in the mapping process.
To explore the iSDAsoil data, it is recommended to visit the iSDAsoil homepage.
Further information can be found in the FAQ section, and technical information documentation
Maps for over 20 different soil properties have been created at three different depth ranges (0-20, 20-50 and 0-200 cm). Soil property predictions were made using machine learning coupled with remote sensing data and a training set of over 100,000 analyzed soil samples. Included in the original resource there are images of predicted soil properties, model error and satellite covariates used in the mapping process.
To explore the iSDAsoil data, it is recommended to visit the iSDAsoil homepage.
Further information can be found in the FAQ section, and technical information documentation
Service location:
Geographical Coverage:
Continental - Africa
GIS Data Type:
Raster
Spatial resolution:
30 m (30 x 30 m pixel)
Publication date:
2020
Reference period-start:
2001
Reference period-stop
2017
License:
Soil Properties:
Potassium, Phosphorus, Bulk Density, Sulfur, USDA Texture, Cation Exchange Capacity, silt, Zinc, Nitrogen, Iron, Clay, sand, Coarse Fragments, Organic Carbon Content, Carbon Total, Calcium, pH, Aluminium, Magnesium, Rock Horizon
Soil deph coverage (cm):
0-200 cm
Citation:
Hengl, T., Miller, M.A.E., Križan, J. et al. African soil properties and nutrients mapped at 30 m spatial resolution using two-scale ensemble machine learning. Sci Rep 11, 6130 (2021). https://doi.org/10.1038/s41598-021-85639-y
Overview
Please find prediction error layers for each dataset here
| Name | Original name | Unit of measurement | Description |
|---|---|---|---|
| Aluminium | Aluminium | ppm | soil extractable Aluminium (Al) log-transformed predicted at 30 m resolution for 0–20 and 20–50 cm depth intervals. |
| Zinc | Zinc | ppm | soil extractable Zinc (Zn) log-transformed predicted at 30 m resolution |
| Phosphorus | Phosphorus | ppm | iSDAsoil dataset soil extractable Phosphorus (P) log-transformed predicted at 30 m resolution |
| Potassium | Potassium | ppm | soil extractable Potassium (K) log-transformed predicted at 30 m resolution |
| Nitrogen | Nitrogen | g/kg | soil total organic Nitrogen (N) log-transformed predicted at 30 m resolution |
| Sulfur | Sulphur | ppm | soil extractable Sulphur (S) log-transformed predicted at 30 m resolution |
| Clay | Clay | % | soil clay content (USDA system) in % predicted at 30 m resolution |
| Iron | Iron | ppm | soil extractable Iron (Fe) log-transformed predicted at 30 m resolution |
| Calcium | Calcium | ppm | soil extractable Calcium log-transformed predicted at 30 m resolution |
| Magnesium | Magnesium | ppm | soil extractable Magnesium (Mg) log-transformed predicted at 30 m resolution |
| silt | Silt | % | soil silt content in % predicted at 30 m resolution |
| sand | Sand | % | soil sand content in % predicted at 30 m resolution |
| Cation Exchange Capacity | Cation exchange capacity | cmolc/kg | soil effective Cation Exchange Capacity (eCEC) log-transformed predicted at 30 m resolution |
| Carbon Total | Total carbon | g/kg | soil total carbon in permilles (g/kg) log-transformed predicted at 30 m resolution |
| Organic Carbon Content | Organic carbon content | g/kg | soil organic carbon (C) log-transformed predicted at 30 m resolution |
| Bulk Density | Bulk density | kg/m3 x 10 | soil fine-earth bulk density in kg/m3 x 10 predicted at 30 m resolution |
| Coarse Fragments | Coarse fragments | % | soil stone content / coarse fragments log-transformed predicted at 30 m resolution |
| pH | pH | pH x 10 | soil pH (1:1 Soil-Water Suspension) predicted at 30 m resolution |
| USDA Texture | USDA Texture | - | Textural Class expressed as 1 = Clay, 2 = Silty Clay, 3 = Sandy Clay, 4 = Clay Loam, 5 = Silty Clay Loam, 6 = Sandy Clay Loam, 7 = Loam, 8 = Silty Loam, 9 = Sandy Loam, 10 = Silt, 11 = Loamy Sand, 12 = Sand |
| Rock Horizon | Rock horizon | cm | Depth to bedrock, predicted mean |