|Title:||Global Map of Irrigation Areas|
Doll, Dr. PetraP.Doell@em.uni-frankfurt.de
|Data Set Documentation:||http://www.fao.org/geonetwork/srv/en/main.search
|Data Set Location:||AQUASTAT Information System on Water and Agriculture, Land and Water Development Division, Food and Agriculture Organization of the United Nations (FAO), Rome, Italy|
|Data Center Contact:||Hoogeveen, Jippe
|Data Center URL:||http://www.fao.org/ag/agl/aglw/aquastat/main/index.stm|
|Data Set Citation:||S. Siebert, P. Doll, S. Feick, J. Hoogeveen, and K. Frenken. 2007. Global Map of Irrigation Areas, Version 4.0.1, Johann Wolfgang Goethe University, Frankfurt am Main, Germany / Food and Agriculture Organization of the United Nations, Rome, Italy. Also see: (1) Doll, P., and S. Siebert. 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. (2) Doll, P. and S. Siebert. 2000. A digital global map of irrigated areas. ICID Journal, 49(2), 55-66. (3) Siebert, S. and P. Doll. 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. (4) Siebert, S., S. Feick, and J. Hoogeveen. 2005. A digital global map of irrigated areas: An update for Asia. Frankfurt Hydrology Paper 01, Frankfurt University, Frankfurt/M., Germany and Food and Agriculture Organization of the United Nations, Rome, Italy.|
|Download Data Sets:||Global Map of Irrigation Areas, Version 4.0.1
Global Map of Irrigation Areas - version 4.0.1 - area equipped for irrigation expressed as percentage of total area (2 354 kB - ASCII-grid, values have a precision of 6 decimals) Global Map of Irrigation Areas - version 4.0.1 - area equipped for irrigation expressed in hectares per cell (2 316 kB - ASCII-grid, values have a precision of 6 decimals) Global Map of Irrigation Areas - version 4.0.1 (12 220 kB - ESRI shape file, values have a precision of 2 decimals) Global Map of Irrigation Areas - version 4.0.1 (7 694 kB - High resolution PDF-file) Global Map of Irrigation Areas - version 4.0.1
|Alternate Data Access:||
Areas equipped for irrigation
|Abstract:||The Land and Water Development Division of Food and Agriculture Organization of the United Nations and the Johann Wolfgang Goethe University, Frankfurt am Main are currently co-operating in the development of a global irrigation mapping facility. The mandate of the Food and Agriculture Organization calls for the dissemination of global information on food and agriculture. Through its Land and Water Development Division, it maintains an information system on water and agriculture in developing countries and systematically collects, analyzes and disseminates this information. The first global digital map of irrigated areas on the basis of cartographic information and FAO statistics has a resolution of 0.5 degree and was developed in 1999 by Stefan Siebert and Petra Doll when they worked at the Center for Environmental Systems Research, University of Kassel. It described the fraction of each 0.5 degree cell area that was equipped for irrigation around 1995. Stefan Siebert and Petra Doll are currently working at the Hydrology Group of the Department of Physical Geography of the Johann Wolfgang Goethe University.
Since 1999 the methodology to produce the map has been improved which made it possible to increase the spatial resolution of the map to 5 minutes (about 10 km at the equator). The objective of the co-operation between the Johann Wolfgang Goethe University and FAO is to develop global GIS coverage of areas equipped for irrigation and to make it available to users in the international community. The data collected through the AQUASTAT surveys will be used to improve the overall quality and resolution of the information.
The currently available global map of irrigation areas is version 4.0.1. The map shows the amount of area equipped for irrigation around the turn of the 20th century in percentage of the total area on a raster with a resolution of 5 minutes. The area actually irrigated was smaller, but is unknown for most countries.
For updating, a Global Irrigation Map Generator was developed which combines a database containing geographic information on irrigated areas (e.g. point or polygon information on the location, size of irrigation projects, raster data) and statistical information on the total irrigated area in administrative units like countries, districts or counties.
|Spatial Reference Method:||Raster|
|Content Time Range:||Begin: - End:|
ORNL DAAC Staff