Crucial supplies of water in China, the US, India and other large economies are dwindling so fast that the threat to the world’s water security is far worse than is commonly understood, a prominent hydrologist has warned.
一位著名的水文学家警告说，中国、美国、印度及其他大型经济体的关键水资源供应都在急剧减少，全球水资源安全面临的威胁远比普遍认为的更糟糕。
Groundwater in soil and aquifers accounts for up to one-third of water used globally and is the main source of water for more than 2bn people.
土壤和地下含水层中蕴含的地下水总计占了全球用水的三分之一，是逾20亿人口的主要水源。
It accounts for about half the water used to grow food and is an important reserve during serious droughts, such as those gripping California and Brazil at the moment.
这部分水源占了农作物灌溉用水的一半左右，也是严重干旱时期——比如美国加利福尼亚州和巴西当前遭遇的干旱——的重要储备。
But it is being pumped out so rapidly in some of the driest regions that it can no longer be easily replenished naturally, according to research by Professor Jay Famiglietti, senior water scientist at Nasa’s Jet Propulsion Laboratory in California.
然而，根据杰伊•法米列蒂(Jay Famiglietti)教授的研究，在部分最干旱地区，地下水资源被抽取得太过迅速，导致它们很难再以自然方式得到补充。法米列蒂教授是加州美国国家航空航天局(Nasa)喷气推进实验室(JPL)的资深水资源科学家。
“Many of the largest aquifers on most continents are being mined,” Prof Famiglietti wrote in the latest edition of the journal Nature Climate Change. “Without a sustainable groundwater reserve, global water security is at a far greater risk than is currently recognised.”
他在最新一期的《自然气候变化》(Nature Climate Change)中写道：“多数大陆的许多最大地下含水层都在被开采。由于缺乏可持续再生的地下水资源储备，全球水资源安全面临的风险远远高于人们当前的认识。”
In California, the Sacramento and San Joaquin river basins have been losing about 15 km³ of water annually since 2011, more than all the water the state’s 38m residents use in a year.
在加州，自2011年以来，萨克拉门托和圣华金河流域每年丧失15立方千米的水资源，超过了该州3800万居民一年的全部用水量。
一位著名的水文学家警告说，中国、美国、印度及其他大型经济体的关键水资源供应都在急剧减少，全球水资源安全面临的威胁远比普遍认为的更糟糕。
Groundwater in soil and aquifers accounts for up to one-third of water used globally and is the main source of water for more than 2bn people.
土壤和地下含水层中蕴含的地下水总计占了全球用水的三分之一，是逾20亿人口的主要水源。
It accounts for about half the water used to grow food and is an important reserve during serious droughts, such as those gripping California and Brazil at the moment.
这部分水源占了农作物灌溉用水的一半左右，也是严重干旱时期——比如美国加利福尼亚州和巴西当前遭遇的干旱——的重要储备。
But it is being pumped out so rapidly in some of the driest regions that it can no longer be easily replenished naturally, according to research by Professor Jay Famiglietti, senior water scientist at Nasa’s Jet Propulsion Laboratory in California.
然而，根据杰伊•法米列蒂(Jay Famiglietti)教授的研究，在部分最干旱地区，地下水资源被抽取得太过迅速，导致它们很难再以自然方式得到补充。法米列蒂教授是加州美国国家航空航天局(Nasa)喷气推进实验室(JPL)的资深水资源科学家。
“Many of the largest aquifers on most continents are being mined,” Prof Famiglietti wrote in the latest edition of the journal Nature Climate Change. “Without a sustainable groundwater reserve, global water security is at a far greater risk than is currently recognised.”
他在最新一期的《自然气候变化》(Nature Climate Change)中写道：“多数大陆的许多最大地下含水层都在被开采。由于缺乏可持续再生的地下水资源储备，全球水资源安全面临的风险远远高于人们当前的认识。”
In California, the Sacramento and San Joaquin river basins have been losing about 15 km³ of water annually since 2011, more than all the water the state’s 38m residents use in a year.
在加州，自2011年以来，萨克拉门托和圣华金河流域每年丧失15立方千米的水资源，超过了该州3800万居民一年的全部用水量。
