WoSIS snapshot - July 2016

The aim of the World Soil Information Service (WoSIS) is to serve quality-assessed, georeferenced soil data (point, polygon, and grid) to the international community upon their standardisation and harmonisation. So far, the focus has been on developing procedures for legacy point data with special attention to the selection of soil analytical and physical properties considered in the GlobalSoilMap specifications (e.g. organic carbon, soil pH, soil texture (sand, silt, and clay), coarse fragments ( greater than  2 mm), cation exchange capacity, electrical conductivity, bulk density, and water holding capacity). Profile data managed in WoSIS were contributed by a wide range of soil data providers; the data have been described, sampled, and analysed according to methods and standards in use in the originating countries. Hence, special attention was paid to measures for soil data quality and the standardisation of soil property definitions, soil property values, and soil analytical method descriptions. At the time of writing, the full WoSIS database contained some 118 400 unique shared soil profiles, of which some 96 000 are georeferenced within defined limits. In total, this corresponds with over 31 million soil records, of which some 20 % have so far been quality-assessed and standardised using the sequential procedure discussed in this paper. The number of measured data for each property varies between profiles and with depth, generally depending on the purpose of the initial studies. Overall, the data lineage strongly determined which data could be standardised with acceptable confidence in accord with WoSIS procedures, corresponding to over 4 million records for 94 441 profiles. The publicly available data – WoSIS snapshot of July 2016 – are persistently accessible from ISRIC WDC-Soils through doi:10.17027/isric-wdcsoils.20160003. Citation: Batjes NH, Ribeiro E, van Oostrum A, Leenaars J, and Mendes de Jesus J 2016. Standardised soil profile data for the world (WoSIS, July 2016 snapshot), doi:10.17027/isric-wdcsoils.20160003. Supplement to: Batjes NH, Ribeiro E, van Oostrum A, Leenaars J, Hengl T, and Mendes de Jesus J 2017. WoSIS: Providing standardised soil profile data for the world, Earth System Science Data 9, 1-14, doi:10.5194/essd-9-1-2017 .

Simple

Date ( Publication )
2016-07-20
Identifier
76f1bae3-cee1-4bc7-98b2-beb036d88d2b
Identifier
doi: / 10.17027/isric-wdcsoils.20160003
Presentation form
Digital map
Status
Completed
Author
ISRIC - World Soil Information - Ad van Oostrum ( Guest researcher )
PO Box 353 Wageningen 6700AJ Netherlands

Author
ISRIC - World Soil Information - Eloi Ribeiro ( Geoinformatics )
PO Box 353 Wageningen 6700AJ Netherlands

Author
ISRIC - World Soil Information - Niels Batjes ( Senior Soil Scientist )
PO Box 353 Wageningen 6700AJ Netherlands

Keywords ( Theme )
  • Soil
  • Standard
  • Bulk density
  • Cation exchange capacity (CEC)
  • Soil classification
  • Coarse fragments
  • Clay
  • Effective cation exchange capacity (ECEC)
  • Electrical conductivity
  • Organic carbon
  • pH
  • Sand
  • Silt
  • Calcium carbonate equivalent
  • Texture
  • Water retention
  • WoSIS
  • WoSIS snapshot
Stratum ( Stratum )
  • Soil science
Region ( Place )
  • Global
Access constraints
License
Use constraints
License
Other constraints
Licenced per profile, as specified by data provider and indicated in the data
Spatial representation type
Vector
Denominator
100000
Metadata language
en
Character set
UTF8
Topic category
  • Geoscientific information
Begin date
1918-01-01
End date
2013-02-12
N
S
E
W
thumbnail


Reference system identifier
EPSG / 4326
Distribution format
  • zip ( )

OnLine resource
Download zip ( WWW:DOWNLOAD-1.0-ftp--download )
OnLine resource
Scientific paper ( WWW:LINK-1.0-http--related )
OnLine resource
Project webpage ( WWW:LINK-1.0-http--related )
OnLine resource
Procedures manual 2018 ( WWW:LINK-1.0-http--related )
Hierarchy level
Dataset
Statement
https://www.isric.org/explore/wosis/wosis-contributing-institutions-and-experts

gmd:MD_Metadata

File identifier
76f1bae3-cee1-4bc7-98b2-beb036d88d2b XML
Metadata language
en
Character set
UTF8
Hierarchy level
Dataset
Hierarchy level name
dataset
Date stamp
2020-04-01T12:12:58
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
2003/Cor.1:2006
Point of contact
ISRIC - World Soil Information - Eloi Ribeiro ( Geoinformatics )
PO Box 353 Wageningen 6700AJ Netherlands

Citation proposal


(2016) . WoSIS snapshot - July 2016.
https://data.isric.org/geonetwork/srv/api/records/76f1bae3-cee1-4bc7-98b2-beb036d88d2b

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