Spie.org: Using remote sensing to assess crop water productivity

Crop patterns, evapotranspiration, biomass, and yield accumulation all can be estimated using satellite sensor data. In our research, we used satellite map data to calculate crop water productivity. The International Water Management Institute (IWMI) made a pilot study in the Sry Darya river basin, central Asia,2 which collected land use (or cover) and social-economic information.

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Source: http://spie.org/x39199.xml?highlight=x2420&Article