WoSIS Soil Profile Database

The World Soil Information Service (WoSIS) aims to serve the user with a selection of standardised/ harmonised soil data. These quality-assessed data may be used to underpin digital soil mapping and a range of global assessments. WoSIS is an important building block of ISRIC’s evolving, searchable data infrastructure. 

The aims of the World Soil Information Service are to:

  • Safeguard world soil data 'as is' (especially for soil legacy data)
  • Share soil data (point, polygon, grid) upon their standardization and harmonization
  • Provide quality-assessed soil data for digital soil mapping and a range of environmental applications.

All data submitted for consideration in WoSIS are first preserved ‘as is’ in the ISRIC WDC-Soils Data Repository. Subsequently, they are quality-assessed, standardised and, where possible, harmonised using consistent procedures. Special attention is being paid to the selection of soil properties considered in the GlobalSoilMap specifications. These include soil pH, soil organic carbon content, soil texture, bulk density, cation exchange capacity, and soil water retention.

The WoSIS workflow is visualised below:

 WoSIS_pm2018_Figure2-5.png                                

Some 196,000 geo-referenced, standardised point data are currently served from WoSIS via WFS. This corresponds with some 6 million soil records. The number of measured data for each property varies between profiles and with depth, generally depending on the purpose of the initial studies. Further, in most source data sets, there are fewer data for soil physical as opposed to soil chemical attributes. There also are fewer measurements for deeper than for surficial horizons. Generally, limited quality information is associated with the various source data. The estimated geographic and measurement uncertainty has been quantified in the data set.

 

Location of soil profiles provided from WoSIS via WFS (September 2019)

 

Data served from WoSIS are supplied in compliance with the licence specified by each data provider. The data can be accessed freely here

If you wish to share soil profile for consideration/processing in WoSIS please see the following page.

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At ISRIC, the quality-assessed point data are mainly used to underpin digital soil mapping at increasingly detailed resolutions (SoilGrids).