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A Digital Global Map of Irrigated Areas

ICID Journal, Volume 49, Issue 2

Year of publication 2000

Place of publication Rome, Italy ;

Pages 12p.

Author Döll, P., Siebert, S.

Publisher John Wiley & Sons, Ltd. ;

Product type Article

Synopsis (short abstract) A Digital Global Map of Irrigated Areas is a publication related to the GMIA version 1. This paper, published on ICID Journal, 49(2), 55-66, describes the dataset, the data and map sources as well as the map generation, and it discusses the data uncertainty. The digital global map of irrigated areas was developed for the purpose of global modeling of water use and crop production, The map depicts the percentage of each 0.5˚ by 0.5˚ cell that was equipped for irrigation in 1995. It was derived by combining information from large-scale maps with outlines of irrigated areas (one or more countries per map), FAO data on totala irrigated area per country in 1995 and national data on total irrigated area per country, drainage basin or federal state.

This article is academically peer reviewed and published externally. This article is published in "Irrigation and Drainage" (the official journal of the International Commission on the Irrigation and Drainage - ICID), Volume 49, Issue 2, 2000

Cite this content as:

Döll, P., Siebert, S. (2000): A Digital Global Map of Irrigated Areas. ICID Journal, 49(2), 55-66.

Language English

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    The first version of the Digital Global Map of Irrigated Areas was published in 1999. It consisted of a raster map with a resolution of 0.5° by 0.5° containing the percentage of the area that was equipped for irrigation around 1995, the so-called irrigation density. For Version 2, updated maps of Latin America, Europe, Africa and Oceania have been published in 2002. With the update to version 3 in 2005 the map for the whole globe was generated by using the same methodology. In the present report, the update to version 4 in 2006 is presented which incorporates improvements for the continents of Africa and Europe and for parts of Latin America as well.
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    This poster displays the version 4 of the Global Map of Irrigated Areas and it also briefly details the data and methods used for its compilation. The poster was presented by the Frankfurt University and the Food and Agriculture Organization of the United Nations at the International Workshop on Global Irrigated Area Mapping held 25 - 26 September 2006 in Colombo, Sri Lanka, and at the Tropentag Conference 2006 held in Bonn, Germany.
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    A Digital Global Map of Irrigated Areas (Report N. 1) 1999
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    This report describes the Digital Global Map of Irrigated Areas developed for the purpose of global modelling of water use and crop production. The map depicts the percentage of each 0.5˚ by 0.5˚ cell that was equipped for irrigation in 1995. It was derived by combining information from large-scale maps with outlines of irrigated areas (one or more countries per map), FAO data on total irrigated area per country in 1995 and national data on total irrigated area per country, drainage basin or federal state. This documentation describes the dataset, the data and map sources as well as the map generation, and it discusses the data uncertainty. Publication details: Kassel World Water Series 1, Center for Environmental Systems Research, University of Kassel, Germany, 23 pp + Appendix.
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