Agriculture
Donald Worster, Dust Bowl: The Southern Plains in the 1930’s
The Dust Bohttp://www.pbs.org/wgbh/amex/dustbowl/maps/index.html
PBS Online, The American Experience (2100 Crystal Drive, Arlington, Virginia 22202)
Minnesota farm blighted by drought, 1936
http://climate.umn.edu/doc/journal/top5/numberone.htm
Minnesota Climatology Working Group (State Climatology Office, Department of Soil, Water, and Climate, 439 Borlaug Hall, Saint Paul, MN 55108)
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Text source: http://www.infoforhealth.org/pr/m13/m13chap3_5.shtml
Source: MA Desertification Synthesis Report (2005), p.23
http://www.greenfacts.org/en/desertification/figtableboxes/appendix-a.htm
http://www.greenfacts.org/en/desertification/figtableboxes/figure-2-1.htm
The map is based on data from UNEP Geo Data Portal (http://geodata.grid.unep.ch/ ). Global area based on Digital Chart of the World data (147,573,196.6 square km); Data presented in the graph are from the MA core database for the year 2000.