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Use constraints
Using this graphic and referring to it is encouraged, and please use it in presentations, web pages, newspapers, blogs and reports. For any form of publication, please include the link to this page and give the cartographer/designer credit (in this case Hugo Ahlenius, UNEP/GRID-Arendal)
Source(s)
Nelson, A. 2008. Estimated travel time to the nearest city of 5,000 or more people in year 2000. Personal communication of December 8, 2008.
Rammankutty, N et al. 2008. Farming the planet: 1. Geographic distribution of global agricultural lands in the year 2000', Global Biogeochemical Cycles, Vol. 22, GB1003, doi:10.1029/2007GB002952. HYPERLINK 'http://www.geog.mcgill.ca/~nramankutty/Datasets/Datasets.html' http://www.geog.mcgill.ca/~nramankutty/Datasets/Datasets.html (Accessed December 4, 2008)
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Uploaded on Tuesday 21 Feb 2012
by GRID-Arendal
Market access (estimated travel time) in agricultural areas
Year:
2009
Author:
Hugo Ahlenius, UNEP/GRID-Arendal
Description:
Accessibility to food is also determined by the long-term trend
in food prices (which is a different issue from price volatility).
The rising trend in global food prices is likely to persist in
the next decade. In the long run, however, prices will decline
(OECD-FAO, 2008).
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