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Overview of available digital global soil data sets.

 
Product Date of release Currency of data Scale Data model Variables
Map of World Soil Resources May 1990(version 1) 1981 + updates 1:25,000,000 vector Soil classes (using 1988revised legend)
World Reference Base (WRB) Map of World Soil Resources Jan. 2003 1:25,000,000 vector Soil classes (using WRB)
Digital Soil Map of the World Feb. 2007(version 3.6) 1:5,000,000 vector Soil classes (using WRB)
Global Data Set of Derived Soil Properties December 2005(version 3.0) 1:5,000,000 raster(0.5° resolution) 22 soil properties at 0–30 and 30–100 cm
Derived Soil Properties Database June 2006(version 1.1) 1:5,000,000 raster(5 arc-min resolution) 19 soil properties at 20-cm depth intervals to 100 cm
Harmonized World Soil Database Mar. 2009(version 1.1) 1981 + updates 1:5,000,000 raster(30 arc-s resolution) harmonized soil class and13 soil properties



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Select regional and continental digital soil data sets and national data sets of broad geographic extent.

 
Product Date of release Scale Data model Variables
Continental and regional
European soil database (ESDB), including soil geographical database of Eurasia (SGDBE) Mar.–Nov. 2006 (version 2) 1:1,000,000 raster, vector associations of soil typological units with associated soil properties
Soil map of the European Communities June 1986 1:1,000,000 vector taxonomic classes (associations)
Soil and terrain database (SOTER), land degradation status and soil vulnerability assessment for central and eastern Europe (SOVEUR) 2000 (version 1.1) 1:25,000,000 vector soil classes + terrain elements, with measured soil property data
Soil and terrain database for Latin America and the Caribbean (SOTERLAC) December 1998 1:5,000,000 vector soil classes + terrain elements, with measured soil property data for 1800 soil profiles
Soil and physiographic database for north and central Eurasia December 1999 1:5,000,000 vector soil classes + terrain elements
Digital atlas of Australian soils 1:2,000,000 vector soil–landscape units (consisting of multiple soil types)
SOTER for northeastern Africa 1998 1:1,000,000–1:2,000,000 vector 1200 homogeneous agro-ecological mapping units
SOTER for central Africa (SOTER-CAF) September 2006 1:2,000,000 (Congo), 1:1,000,000 (others) vector dominant soil type, number of soil components
SOTER for southern Africa (SOTERSAF) 2003 1:2,000,000 vector
National
U.S. general soil map (STATSGO2) 2006 1:250,000 vector taxonomic classes with estimated soil properties
Soil survey geographic database (SSURGO) multiple 1:12,000–1:24,000 vector taxonomic classes with estimated soil properties
CONUS-Soil 1998 1:250,000 raster (1 km) estimated soil properties at six depth increments
Soil landscapes of Canada (SLC) December 1996 (version 2.2) 1:1,000,000 vector taxonomic classes with estimated soil properties
Soils of Russia 1:25,000,000 vector soil classes with associated properties