Geography Reference
In-Depth Information
0
50 0 km
Share of irrigated cropland (%)
0 - 20
20 - 40
40 - 60
60 - 80
80 - 100
Method: Quartic Kernel density
smoothing in a flexible bandwidth
of the 30 nearest counties
Source: US Agricultural census
Designed and made by JM Zaninetti, University of Orleans, CEDETE Institute
Figure 2.5. Importance of irrigation in 2002
80%
70%
60%
50%
40%
30%
20%
10%
0%
North-Central
North East
South
West
Irrigated Area
Cultivated Area
Figure 2.6. Irrigated regions in 2002
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