2015

GAEZ+_2015

Improving spatial understanding of crop production systems, this dataset allows policymakers and donors to better target agricultural and rural development policies and investments, increasing food security and growth with minimal environmental impacts.

This work is licensed under a Creative Commons Attribution 4.0 International License.

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This new data product consists of 156 data files in geotiff format. For each of the 26 GAEZ crops or crop categories, rainfed and irrigate harvested area, rainfed and irrigated production, rainfed and irrigated yield are calculated.

All files have standard names, which allow direct identification of variable, crop and technology: GAEZAct2015_Variable_Cropname_Management.tif

where

Variable = HarvArea or Production or Yield.

Cropname = see GAEZ_2015 crops list in the Online Resources of this metadata

Management = Irrigated or Rainfed (see GAEZ_2015 technology in the Online Resources of this metadata)

Unit of measure:

- Crop harvested area: 1000 ha (10e7 m2) per 5-arcminute grid cell

- Crop production: 1000 tonnes (10e6 kg) per 5-arcminute grid cell

- Crop yield: tonnes per ha (1000 kg ha-1; 0.1 kg m-2)

‘No data’ : Oceans, open-water, Antarctica in the tif files have the no-data value of -3.39999999999999996e+38.

Grid cell mapping to country name:

Each 5-minute land grid cell is assigned to a country, or partitioned fractionally between multiple countries, based on the Global Administrative Unit Layers (GAUL) of FAO ( http://www.fao.org/geonetwork/srv/en/metadata.show?id=1269 1)

Note: Antarctica is excluded from this analysis and product.

Special Cases:

- Disputed Areas

Some grid cells in the cell-table database are assigned to disputed areas, rather than to specific countries (the number following region is the ADM0_CODE in the GAUL data): Abyei (102), Aksai_Chin (2), Arunachal_Pradesh (15), China/India (52), Hala'ib_Triangle (40760), Ilemi_Triangle (61013), Jammu_and_Kashmir (40781), Ma'tan_al-Sarra (40762), Falkland_Islands_(Malvinas) (81).

We assumed that there was no change in crop harvested area or crop production during 2010 – 2015 for these grid cells.

- Sudan

In the FAOSTAT data downloaded in Oct. 2019 and April 2020, crop harvest area and production and livestock data are reported for ‘Sudan_former’ in 2010, but for ‘Sudan’ and ‘South_Sudan’ in 2015. To compute the fractional changes for these grid cells, we split the 2010 data for Sudan into a virtual ‘Northern Sudan’ and ‘Southern Sudan’ using the data for the year 2012, which exists for both countries. We then used these generated 2010 data and applied the same methodology as described above to calculated changes in harvested areas in all grid cells in both countries.

- Small regions and islands

Some countries (generally small regions or islands) had no crop harvested area or crop production data reported in FAOSTAT. We assumed that there was no change in crop harvested area or crop production for the grid cells in these countries. Note that many may have had zero reported crop harvested area or crop production in the GAEZ database in 2010. These were (number following region is code in ADM0_CODE in the GAUL data):

Anguilla (9), Aruba (14), Ashmore_and_Cartier_Islands (16), Azores_Islands (74578), Baker_Island (22), Bassas_da_India (25), Bird_Island (32), Bouvet_Island (36), British_Indian_Ocean_Territory (38), Christmas_Island (54), Clipperton_Island (55), Cocos (Keeling)_Islands (56), Europa_Island (80), French_Southern_and_Antarctic_Territories (88), Glorioso_Island (96), Greenland (98), Guernsey (104), Heard_Island_and_McDonald_Islands (109), Howland_Island (112), Isle_of_Man (120), Jarvis_Island (127), Jersey (128), Johnston_Atoll (129), Juan_de_Nova_Island (131), Kingman_Reef (134), Kuril_islands (136), Madeira_Islands (151), Mayotte (161), Midway_Island (164), Navassa_Island (174), Netherlands_Antilles (176), Norfolk_Island (184), Northern_Mariana_Islands (185), Palmyra_Atoll (190), Paracel_Islands (193), Pitcairn (197), Saint_Helena (207), Scarborough_Reef (216), Senkaku_Islands (218), South_Georgia_and_the_South_Sandwich_Islands (228), Spratly_Islands (230), Svalbard_and_Jan_Mayen_Islands (234), Tromelin_Island (247), Turks_and_Caicos_Islands (251), United_States_Virgin_Islands (258), Wake_Island (265), Gibraltar (95), Holy_See (110), Liechtenstein (146).

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ISO 19115:2003/19139

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