Saturday, June 11, 2011

Climate change to reduce water availability, FAO warns

Xinhua: Climate change will make water less available to produce food crops in years to come, the United Nations Food and Agriculture Organization (FAO) said in a report issued Thursday. River runoff and aquifer recharges will decrease in the Mediterranean, the Americas, Australia and southern Africa, it said.

Areas in Asia which depend on the melting of ice and mountain glaciers will also be affected, while areas with a lot of fluvial deltas are threatened by reduced water flow, increased salinity and rising sea levels, said the report entitled "Climate Change, Water and Food Security". The report also predicted an acceleration of the hydrologic cycle of the planet because high temperatures will raise the evaporation rate of the soil and sea.

"The rain will increase in the tropics and at higher altitudes, but it will decrease in areas that already have dry and semi-dry characters and are located inland on the big continents," the report said. Because of this, there will be a higher frequency of droughts and flooding, which will lead to an increased use of ground water and limit the water available for agriculture even more…

An irrigation pipe in India, shot by Sebastianjude, Wikimedia Commons, under the Creative Commons Attribution-Share Alike 3.0 Unported license

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