lundi 25 février 2013

se soucier de l'essentiel

We cannot reverse climate change and its impact on water availability, but we can and must do a far better job with water management, including the modernization of national and international water policy.


During our study period of August 2002 to October 2008, groundwater depletion was equivalent to a net loss of 109 km3 of water, which is double the capacity of India's largest surface-water reservoir. 
 If measures are not taken soon to ensure sustainable groundwater usage, the consequences for the 114,000,000 residents of the region may include a reduction of agricultural output and shortages of potable water, leading to extensive socioeconomic stresses.


 Our team’s expectation is that the water situation in the Middle East will only degrade with time, primarily due to climate change. The best available science indicates that the arid and semi-arid regions of the world will become even more so: the dry areas of the world will become drier (while conversely, the wet areas will become wetter). Consequences for the Middle East include more prolonged drought, which means that the underground aquifers that store the region’s groundwater will not be replenished during our lifetimes, nor during those of future generations.

source 1 ,    source 2 ,   source 3,  source 4  

et quand je dis "sources"....