Revised soil parameter estimates for the soil types of the world

A revised set of physical and chemical parameter estimates is presented for the soil units of the world, as described by the two FAO soil legends (version 1974 and 1988). The study is based on 9607 soil profiles, which include profiles held in version 1.0 of the WISE database. Upon a screening of data integrity and comparability of analytical methods, derived statistics were generated for 28 soil chemical and physical attributes identified as being useful for assessment of land suitability, crop growth simulation datasets, and analyses of global environmental change.