Full name:
Africa SoilGrids nutrients
Version:
-
Organization or Author:
Abstract:
The African Soil Information Service (AfSIS), managed by ISRIC – World Soil Information, is an initiative designed to enhance soil data and information across Sub-Saharan Africa. It aims to support sustainable land management and agricultural productivity by creating detailed soil maps and databases. AfSIS's data collection encompasses a diverse range of samples, including 18,000 specimens from 60 sentinel sites across Sub-Saharan Africa, covering soil depths from 0-20 cm and 20-50 cm. Additionally, the service has amassed 60,000 samples from 18,500 soil profiles distributed across 40 countries. This extensive dataset is further enriched by contributions from various sources such as EthioSIS, GhaSIS, NiSIS, IFDC, the One Acre Fund, the University of California, Davis, and VitalSigns, ensuring a robust and multifarious soil information system. AfSIS integrates remote sensing techniques, digital soil mapping, and geospatial data to produce detailed and actionable soil information. These technological tools enable the creation of soil maps and facilitate a better understanding of soil properties and their spatial distribution. The initiative was founded by Bill & Melinda Gates Foundation, with the support of the International Fund for Agricultural Development (IFAD), the World Bank, and the European Union.
Service location:
Geographical Coverage:
Continental - Africa
GIS Data Type:
Raster
Spatial resolution:
250 m (250 x 250 m pixel)
Publication date:
2016-05-12
Reference period-start:
1980
Reference period-stop
2016
License:
Soil Properties:
Potassium, Phosphorus, Boron, Copper, Manganese, Zinc, Sodium, Nitrogen, Iron, Calcium, Aluminium, Magnesium
Soil deph coverage (cm):
0-30 cm
Citation:
Hengl, T., Leenaars, J.G.B., Shepherd, K.D., Walsh, M.G, Heuvelink, G.B.M., Mamo, T. et al. (2017) [Soil nutrient maps of Sub-Saharan Africa: assessment of soil nutrient content at 250 m spatial resolution using machine learning] (https://link.springer.com/content/pdf/10.1007/s10705-017-9870-x.pdf). Nutrient Cycling in Agroecosystems, DOI: 10.1007/s10705-017-9870-x.
Overview
More information on the model at the following link: https://github.com/ISRICWorldSoil/AfricaSoilNutrients
| Name | Original name | Unit of measurement | Description | Analytical method |
|---|---|---|---|---|
| Aluminium | Auminium | ppm | extractable alumiunim (Al) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Boron | Boron | 100ppm | extractable boron (B) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Calcium | Calcium | ppm | extractable Calcium (Ca) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Copper | Cupper | 100ppm | extractable Copper (Cu) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Iron | Iron | 100ppm | extractable iron (Fe) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Potassium | Potassium | ppm | extractable Potassium (K) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Magnesium | Magnesium | ppm | extractable Magnesium (Mg) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Manganese | Manganese | 100ppm | extractable Manganese (Mn) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Nitrogen | Nitrogen | ppm | total Nitrogen (N) by wet oxidation at 0-30 cm depth | Wet Oxidation |
| Sodium | Sodium | ppm | extractable Sodium (Na) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |
| Phosphorus | Extractable phosphorus | ppm | extractable Phosphorus (P) by Mehlich at 0-30 cm depth | Mehlich 3 |
| Phosphorus | Phosphorus | ppm | total phosphorus (P) by unspecified methods at 0-30 cm depth | - |
| Zinc | Zinc | 100ppm | extractable Zinc (Zn) by Mehlich 3 at 0-30 cm depth | Mehlich 3 |