Harmonized World Soil Database v2

The Harmonized World Soil Database (HWSD) is a global 30 arc-second raster dataset combining soil data from regional and national sources. It includes over 15,000 soil mapping units linked to detailed soil attributes like organic carbon, pH, water storage, salinity, and texture. The data is organized into general mapping units, soil phases, and topsoil/subsoil characteristics (0–30 cm and 30–100 cm). Derived soil qualities, such as nutrient availability and workability, are assessed for agricultural use, with maize as a reference crop. This harmonized structure supports spatial analysis for agriculture and environmental planning.