Increases in populations have created an increasing demand for food crops while increases in demand for biofuels have created an increase in demand for fuel crops. What has not increased is the amount of croplands and their productivity. These and many other factors such as decreasing water resources in a changing climate have created a crisis like
Background and History of Global Irrigated Area Maps (GIAM). Global Irrigated Area Mapping (GIAM) Using Remote Sensing. GIAM Mapping Section for Selected Global Regions. Evapotranspiration Models, Water Use, and Irrigated Areas. Rain-Fed Cropland Areas of the World. Methods of Mapping Croplands Using Remote Sensing. Accuracies and Errors. Way Forward in Mapping Global Irrigated and Rain-Fed Croplands.