Proportion of land salinized due to irrigation (Global)

This map represents the spatial distribution of land under irrigation which is affected by some degree of salinization. It was produced by combining FAO AQUASTAT country statistics regarding irrigated areas affected by salinization with spatial information on irrigated areas where precipitation is not sufficient to leach away salt residues that are built up in the soil due to irrigation. It was assumed that the risk of salinization of irrigated areas can occur only in areas with an Aridity Index lower than 0.65 (where the Aridity Index is defined as Yearly Precipitation divided by Yearly Reference Evapotranspiration).

Simple

Date (Publication)
2010-11-08
Presentation form
Digital map
Purpose

Map published in SOLAW Report, Managing Systems at Risk
Status
Completed
Author
  FAO-UN Land and Water Division - Jippe Hoogeveen ( Water Resources Officer )
Originator
  FAO-UN Land and Water Division - Javier Mateo-Sagasta
Maintenance and update frequency
As needed
Place

  • World

  • Tag_AQUASTAT
Theme

  • irrigation

  • soil

  • landuse

  • SOLAW

  • Managing Systems at Risk

  • hydrology

  • AQUAMAPS_analyses
Access constraints
Copyright
Use constraints
Copyright
Spatial representation type
Grid
Metadata language

eng
Character set
UTF8
Topic category
  • Boundaries
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Supplemental Information

By combining the Global Map of Irrigation Areas with the spatially distributed Aridity Index, irrigated areas could be identified as potentially at risk of salinization. The AQUASTAT country statistics on areas salinized by irrigation were distributed over the irrigated areas at risk of salinization to obtain the map with the "extent of irrigated areas affected by salinization".


-Global Map of Aridity at 10 arc-min (FAO)

-Global map of irrigation areas at 5 arc-min (Siebert et al., 2007)


The legend indicates the share of land affected by salinization in each pixel.
Reference system identifier
EPSG:4326 - WGS84

Spatial representation info

No information provided.
Distribution format
  • TIFF ( )

OnLine resource
SOLAW website ( WWW:LINK-1.0-http--link )
OnLine resource
FAO AQUASTAT website ( WWW:LINK-1.0-http--link )
OnLine resource
aei_sal_38014 ( OGC:WMS-1.1.1-http-get-map )

Proportion of land salinized due to irrigation

Data quality info

No information provided.
File identifier
65b1d51a-5af4-47fe-bf46-419bf643a5a9 XML
Metadata language

eng
Character set
UTF8
Date stamp
2022-01-28T09:30:00
Metadata standard name

ISO 19115:2003/19139
Metadata standard version

1.0
Point of contact
  FAO-UN Land and Water Division - AQUASTAT ( )
Viale delle Terme di Caracalla , Rome , 00153 , Italy
 
 

Overviews

Spatial extent

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Keywords

AQUAMAPS_analyses Managing Systems at Risk SOLAW hydrology irrigation landuse soil

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