| Title
|
Percentage of irrigated area serviced by groundwater |
| Date
|
2010-10-28T15:41:00 |
| Date type
|
Publication: Date identifies when the resource was issued
|
| Presentation form
|
Digital map: Map represented in raster or vector form
|
| Abstract
|
This map, compiled to support the analysis of SOLAW report concerning trends and current use of water use in agriculture,
shows the percentage of irrigated area supplied by groundwater. Irrigation mainly relies on renewable freshwater resources,
either surface water or groundwater. However, while the extent of irrigation and related water uses are reported in statistical
databases or by model simulations, information on the source of irrigation water is still very rare. A recent global inventory
undertaken by FAO and the University of Bonn reports that 113 million ha, or 38 percent of the total area equipped for
irrigation of 301 million ha, is irrigated by groundwater (Siebert et al, 2010).
|
| Purpose
|
The map is part of the SOLAW Report. |
| Status
|
Completed: Production of the data has been completed
|
|
|
| Maintenance and update frequency
|
As needed: Data is updated as deemed necessary
|
| Descriptive keywords
|
World (place). |
| Descriptive keywords
|
SOLAW , irrigation , water , Managing Systems at Risk , hydrology , AQUAMAPS_analyses (theme). |
| Descriptive keywords
|
hydrology (discipline). |
| Descriptive keywords
|
hydrogeology (discipline). |
| Access constraints
|
Copyright: Exclusive right to the publication, production, or sale of the rights to a
literary, dramatic, musical, or artistic work, or to the use of a commercial print or
label, granted by law for a specified period of time to an author, composer, artist,
distributor
|
| Spatial representation type
|
Grid: Grid data is used to represent geographic data
|
| Language
|
English |
| Character set
|
UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
|
| Topic category code
|
Environment |
|
|
| Supplemental Information
|
Input data for this map include:
• Global map of irrigation areas at 5 arc-min (Siebert et al., 2007)
• Data on sources of irrigation water available by country through the FAO AQUASTAT database
• Additional data obtained through desk studies on distribution of sources of irrigation water.
The legend indicates the share of irrigated land serviced by groundwater in each pixel.
|
