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For the purpose of global modeling of water use as well as
of crop production, a digital global map (data set) of irrigated
areas has been developed. The map depicts the fraction of
each 5 min by 5 min cell (9.25 km x 9.25 km at the equator)
cell that was equipped for irrigation around 1995. It has
been derived by combining statistical data on the area quipped
for irrigation within administrative units (counties, districts,
federal states, countries) and geographical information on
the location of irrigated areas (point, polygon and raster
format).
The current version of the dat set, version 2.1, has been
developed together with the Food and Agriculture Organization
of the United Nations. It can be downloaded from the FAO
website.
The map of irrigated areas is documented in the following
publications which describe the data set, the data and map
sources as well as the map generation, and it discusses the
uncertainty ohe generated map. Version 1 and 2 were only distributed
at a spatial resolution of 0.5 degree by 0.5 degree.
Version 1
- Döll, P., Siebert, S. (2000): A digital global map
of irrigated areas. ICID Journal, 49(2), 55-66
- Döll, P., Siebert, S.(1999): A digital global map
of irrigated areas. Kassel World Water Series 1,
Center for Environmental Systems Research, University of
Kassel, Germany, 23 pp + Appendix. [Download
pdf, 2 MB]
Version 2
Update for Latin America and Europe; new methodology to combine
statistical and geographical information
- Siebert, S., Döll, P. (2001): A digital global map
of irrigated areas – An update for Latin America and Europe.
Kassel World Water Series 4, Center for Environmental Systems
Research, University of Kassel, Germany, 14 pp + Appendix.
[Download
pdf, 1 MB]
Version 2.1
Update for Africa and Australia, using the map generation
method described in Siebert and Döll (2001)
- Siebert, S., Döll, P., Hoogeveen, J. (2002): Global
map of irrigated areas version 2.1.
Center for Environmental Systems Research, University of
Kassel, Germany,
and FAO, Rome, Italy. Online-Documentation.
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