抄録
We have evaluated evapotranspiration from different types of cropland and its water sources under future climate conditions when the current cultivation and irrigation practices will be kept in the future. A future increase in evapotranspiration from irrigated croplands will be larger than that from rain-fed croplands. To compensate increasing water loss from irrigated croplands through evapotranspiration, a larger amount of water will be supplied from non-river water sources than today: cultivation of the second crops in a double-cropping system in India is a typical example. Additional adaptation measures will be necessary to prevent future water shortage where the capacity of currently existing reservoirs or groundwater will be insufficient for future irrigation requirement.
