The GlobalSoilMap project specifications
Résumé
The GlobalSoilMap project aims to produce a digital soil map of the world. The ultimate objective of the project is to build a free downloadable database of key soil properties at multiple depths, mostly using existing soil information and environmental covariates. Maps and data will be released both on: a 3 arc sec by 3 arc sec grid with point estimates; and with 3 arc sec by 3 arc sec block estimates. The spline function and similar methods are used to transform horizon data into continuous depth functions of soil properties. Soil properties are being harmonized according to standards. The soil properties will be delivered as predictions with uncertainty at specified depths. This is the first set of specifications for any digital soil mapping project.