Global Soil Properties
SoilGrids profiles and texture for any point.
Queries ISRIC SoilGrids for clay, silt, sand, bulk density, organic carbon, pH, CEC and coarse fragments at six depths, classifies texture on the USDA triangle and estimates water-retention properties with pedotransfer functions.
Overview
SoilGrids predicts soil properties worldwide at 250 m resolution from about 240,000 profiles and machine learning. For each depth the tool shows the mean prediction with its 5–95 % uncertainty range.
These are modelled values for planning and screening. They do not replace sampling and laboratory testing on site.
What you enter · What you get
What you enter
- Any point on land
What you get
- Depth profiles to 2 m
- USDA texture class per depth
- Field capacity, wilting point, available water, saturated conductivity
- CSV export
How it works in the field
Method and equations
Pedotransfer functions
Water retention at −33 kPa and −1500 kPa and saturated conductivity are estimated from sand, clay and organic matter with Saxton & Rawls (2006).
Texture classes
Sand, silt and clay fractions are placed in the twelve USDA texture classes.
Who uses it
Standards and references
- Poggio, L. et al. (2021). SoilGrids 2.0: producing soil information for the globe with quantified spatial uncertainty. SOIL, 7, 217–240.
- Saxton, K.E. & Rawls, W.J. (2006). Soil water characteristic estimates by texture and organic matter for hydrologic solutions. SSSAJ, 70, 1569–1578.
- Soil Survey Staff (2017). Soil Survey Manual, USDA Handbook 18.
At a glance
- Category
- Engineering & geotechnics
- Runs on
- Phone, tablet and desktop browser
- Export
- CSV, PDF
- Access
- Subscribers
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