Soil property estimates for Tunisia derived from SOTER and WISE (SOTWIS-Tunisia, ver. 1.0)

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Niels H. Batjes
Publication_Date: 20100131
Title: Soil property estimates for Tunisia derived from SOTER and WISE (SOTWIS-Tunisia, ver. 1.0)
Edition: ver. 1.0
Geospatial_Data_Presentation_Form: ArcGis 9.x and MSAccess tables (zipped)
Series_Information:
Series_Name: SOTWIS
Issue_Identification:
Publication_Information:
Publication_Place: Wageningen
Publisher: ISRIC - World Soil Information
Other_Citation_Details:
http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2010_01.pdf
Online_Linkage: http://www.isric.org/sites/all/modules/pubdlcnt/pubdlcnt.php?file=http://www.isric.org/sites/default/files/datasets/SOTWIS_Tunisia_v1.zip&nid=254
Description:
Abstract:
This datasets describes a harmonized set of soil property estimates for Tunisia. It has been derived from the 1:1 million scale Soil and Terrain Database for the country (SOTER_TN, ver. 1.0) and the ISRIC-WISE soil profile database, using standardized taxonomy-based pedotransfer (taxotransfer) procedures. The land surface of Tunisia, covering some 164,150 km2, has been characterized in SOTER_TN using 250 unique SOTER units. Each map unit consists of up to four different soil components. In so far as possible, each soil component has been characterized by a regionally representative profile, selected and classified by national soil experts (see Dijkshoorn et al. 2008). Conversely, in the absence of any measured legacy data, soil components were characterized using synthetic profiles for which only the FAO-Unesco (1988) classification is known. Soil components in SOTER_TN have been characterized using 100 profiles of which 44 are synthetic. The latter represent some 59 per cent of the territory. Comprehensive sets of measured attribute data are not available for most of the measured profiles (56) collated in SOTER_TN, as these were not considered in the source materials. Consequently, to permit modelling, gaps in the soil analytical data have been filled using consistent taxotransfer procedures. Modal soil property estimates necessary to populate the taxotransfer procedure were derived from statistical analyses of soil profiles held in the ISRIC-WISE database ― the current taxotransfer procedure only considers profiles in WISE that: (a) have FAO soil unit names identical to those mapped for Tunisia in SOTER, and (b) originate from regions having similar Köppen climate zones (n= 3566). Property estimates are presented for 18 soil variables by soil unit for fixed depth intervals of 0.2 m to 1 m depth: organic carbon, total nitrogen, pH(H2O), CECsoil, CECclay, base saturation, effective CEC, aluminium saturation, CaCO3 content, gypsum content, exchangeable sodium percentage (ESP), electrical conductivity (ECe), bulk density, content of sand, silt and clay, content of coarse fragments (> 2 mm), and volumetric water content (-33 kPa to -1.5 MPa). These attributes have been identified as being useful for agro-ecological zoning, land evaluation, crop growth simulation, modelling of soil carbon stocks and change, and studies of global environmental change. The soil property estimates can be linked to the spatial data (map), using GIS, through the unique SOTER-unit code; database applications should consider the full map unit composition and depth range. The derived data presented here may be used for exploratory assessments at national scale or broader (< 1:1 000 000). They should be seen as best estimates based on the current, still limited, selection of soil profiles in SOTER_TN and data clustering procedure ― the type of taxotransfer rules used to fill gaps in the measured data has been flagged to provide an indication of confidence in the derived data. See: http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2010_01.pdf
Purpose:
Not Available
Supplemental_Information:
REFERENCE: 1) Batjes NH 2010. Soil property estimates for Tunisia derived from SOTER and WISE (SOTWIS-Tunisia, ver. 1.0). Report 2010/01, ISRIC – World Soil Information, Wageningen (41p. with data set) (http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2010_01.pdf) 2) Dijkshoorn JA, van Engelen VWP and Huting JRM 2008. Soil and landform properties for LADA partner countries (Argentina, China, Cuba, Senegal and The Gambia, South Africa and Tunisia), ISRIC Report 2008/06, FAO, Rome, and ISRIC - World Soil Information, Wageningen (28 p. with dataset) (http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2008_06.pdf)
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19630101
Ending_Date: 20041231
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 7.5
East_Bounding_Coordinate: 11.6
North_Bounding_Coordinate: 37.4
South_Bounding_Coordinate: 30.2
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > CALCIUM
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > CARBON
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > CATION EXCHANGE CAPACITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > ELECTRICAL CONDUCTIVITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > NITROGEN
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > ORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL SALINITY/SOIL SODICITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL BULK DENSITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL CLASSIFICATION
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL DEPTH
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL HORIZONS/PROFILE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL PH
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL TEXTURE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL WATER HOLDING CAPACITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > CALCIUM
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > CARBON
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > CATION EXCHANGE CAPACITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > ELECTRICAL CONDUCTIVITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > NITROGEN
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > ORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL SALINITY/SOIL SODICITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL BULK DENSITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL CLASSIFICATION
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL DEPTH
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL HORIZONS/PROFILE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL PH
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL TEXTURE
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL WATER HOLDING CAPACITY
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS
Theme_Keyword: SOTERPROGRAM > SOTER - SOIL AND TERRAIN DATABASE PROGRAMME
Theme_Keyword: Secondary (derived) Soil Data
Theme_Keyword: Soil Property Estimates
Theme_Keyword: ENVIRONMENT
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > AFRICA > NORTHERN AFRICA > TUNISIA
Access_Constraints: ISRIC kindly requests that you send us two reprints of any publication that uses data received from ISRIC - World Soil Information. This will help us to determine the type and level of use of the data we distribute.
Use_Constraints:
Materials developed by ISRIC are copyrighted, all rights reserved. Reproduction and dissemination of such materials for educational or non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of materials for resale or other commercial purposes is prohibited without prior written permission of the copyright holders. Applications for such permission should be addressed to: Director, ISRIC - World Soil Information, PO Box 353, 6700 AJ Wageningen, the Netherlands or by e-mail to soil.isric@wur.org. ISRIC requests you to acknowledge use of our data; this will allow us to gauge the interest and usefulness of our services. Please refer to the dataset documentation for suggested form of acknowledgement and correct citation.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: NIELS H. BATJES
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: ISRIC - World Soil Information (World Data Center for Soils)
Address: P.O. Box 353
City: Wageningen
Postal_Code: 6700 AJ
Country: The Netherlands
Contact_Voice_Telephone: +31-317-483735
Contact_Electronic_Mail_Address: niels.batjes@wur.nl
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The data set's lineage is described in: Batjes NH 2010. Soil property estimates for Tunisia derived from SOTER and WISE (SOTWIS-Tunisia, ver. 1.0). Report 2010/01, ISRIC – World Soil Information, Wageningen (41 p. with data set) (http://www.isric.org/isric/Webdocs/Docs/ISRIC_Report_2010_01.pdf)
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: WDC/SOILS, ISRIC, WAGENINGEN > World Data Center for Soils, ISRIC - World Soil Information, Wageningen
Contact_Person: NIELS H. BATJES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: ISRIC - World Soil Information (World Data Center for Soils)
Address: P.O. Box 353
City: Wageningen
Postal_Code: 6700 AJ
Country: The Netherlands
Contact_Voice_Telephone: +31-317-483735
Contact_Electronic_Mail_Address: niels.batjes@wur.nl
Resource_Description: SOTWIS-Tunisia
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 4 MB zipped, 14 MB unzipped
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.isric.org
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.isric.org/projects/sotwis-tunisia
Access_Instructions:
View project home page; download documentation and (zipped) data set
Fees: N/a
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Metadata_Reference_Information:
Metadata_Date: 20100222
Metadata_Review_Date: 20131009
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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