Global Assessment of Human-induced Soil Degradation (GLASOD)

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Abstract: The GLASOD project (1987-1990) has produced a world map of human-induced soil degradation. Data were complied in cooperation with a large number of soil scientists throughout the world, using uniform Guidelines and international correlation. The status of soil degradation was mapped within loosely defined physiographic units (polygons), based on expert judgement. The type, extent, degree, rate and main causes of degradation have been printed on a global map, at a scale of 1:10 million, and documented in a downloadable database. Information about the areal extent of human-induced soil degradation can be found in an explanatory note.
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Description: View project home page; download documentation and (zipped) data set.
Multimedia Sample
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Caption:  GLASOD map (printed version, mercator projection)
Geographic Coverage
Spatial coordinates   
  N: 90.0   S: -90.0   E: 180.0   W: -180.0

Data Set Citation
Dataset Originator/Creator: Oldeman LR, Hakkeling RTA and Sombroek WG
Dataset Title: Global Assessment of Human-induced Soil Degradation (GLASOD)
Dataset Release Date: 1991-10-01
Dataset Release Place: Wageningen
Dataset Publisher: UNEP and ISRIC - World Soil Information
Version: ver. 1.0
Data Presentation Form: ArcMap and MSExcel tables (zipped)
Other Citation Details:
Online Resource:
Temporal Coverage
Start Date: 1950-01-01
Stop Date: 1997-10-01
Data Resolution
Horizontal Resolution Range: 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
Quality The data set's lineage (and citation) is described in:
Oldeman LR, Hakkeling RTA and Sombroek WG 1991. World Map of the Status of Human-Induced Soil Degradation: An explanatory Note (rev. ed.), UNEP and ISRIC, Wageningen (
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 ... View entire text
Data Set Progress
Data Center
World Data Center for Soils, ISRIC - World Soil Information, Wageningen Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +31-317-483735
Email: niels.batjes at
Contact Address:
ISRIC - World Soil Information (World Data Center for Soils)
P.O. Box 353
City: Wageningen
Postal Code: 6700 AJ
Country: The Netherlands
Distribution Media: Internet (downloadable data)
Distribution Size: 6 Mb zipped; 9 Mb unzipped
Fees: n/a
Phone: +31-317-471735
Email: Godert.VanLynden at
Contact Address:
ISRIC - World Soil Information (World Data Center for Soils)
P.O. Box 353
City: Wageningen
Postal Code: 6700 AJ
Country: The Netherlands
Bridges EM and Oldeman LR 1999. Global assessment of human-induced land degradation. Arid Soil Research and Rehabilitation 13, 319-325
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2007-08-09
Last DIF Revision Date: 2013-10-09
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