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The author:(作者)qq
published in(发表于) 2015/6/19 12:26:28
Global decline in underground aquifers striking： China first，

Foreign media said the United States NASA (NASA) released on June 16, according to new satellite data, the world's largest underground aquifers, one-third water level is falling at an alarming rate, including China's underground aquifers.

According to voice of America radio June 18, United States NASA's gravity recovery and climate experiment satellites GRACE (Gravity Recovery and Climate Experiment satellites) aquifer provided the most detailed picture of the 37 largest aquifers in the 21 water level dropped to the sustainability tipping point, they are located in China, India, and France, and North Africa and other places, that is, during the 10 years of research, Water drawn from the aquifer above the savings rate.

NASA's study is the first detailed assessment of the aquifer, it confirms what has long suspected that humans overruns using underground aquifer. Researchers say, as people rely more and more on groundwater aquifer recovery struggles to keep up agricultural, population growth and industrial water demand growth, it will become more and more serious.

Studies have found that pressure in the world's largest underground aquifer, that is the fastest decline in the water level, almost no signs of rehabilitation of the aquifer, is the Arabian aquifer, the aquifer to support a population of 60 million. Followed by India, Pakistan in the Northwest and the North Africa region. The overcrowding in poor areas, the lack of alternative sources, lack of water can quickly lead to social unrest

United States University of California, Irvine led by scientists based on the information provided by the NASA satellite to study global human 35% of water comes from groundwater, and greater demand in times of drought. United States most at risk is California's Central Valley aquifer, currently 60% of water from groundwater in California, due to lack of rain, rivers and reservoirs drying up on the ground, experts predict that by the end of this year, 100% California water could come from groundwater. Last year, California passed its first law of groundwater management, but the new law could take 20 years to be fully effective.

Underground aquifers from snow and rain, take tens of thousands of years to recover.

According to Taiwan News, June 18, water resources research under the auspices of NASA's Jet Propulsion Laboratory scientist familieti said: "the situation is very serious, are on the decline of groundwater level around the world. No unlimited water. "The study, published in the 16th edition of the journal water resources research.

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