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Many parts of the world are experiencing a rapid depletion in the subterranean reserves of water that billions of people rely on for drinking, irrigation and other uses,
全球许多地区正在经历地下储水的迅速枯竭，地下储水是数十亿人赖以饮用、灌溉和供应其他用途的水源，
according to new research that analyzed millions of groundwater level measurements from 170,000 wells in more than 40 countries.
这一结论来自一项分析了40多个国家的17万口井中测得的数百万个地下水位数据的最新研究。
It's the first study to piece together what's happening to groundwater levels at a global scale, according to the researchers involved,
据参与该研究的人员称，这是首次将全球范围内地下水水位的变化结合到一起的研究，
and will help scientists better understand what impact humans are having on this valuable underground resource.
并且有助于科学家更好地了解人类对这一宝贵的地下资源的影响。
Reductions in groundwater can make it harder for people to access freshwater to drink or to irrigate crops and can result in land subsidence.
地下水的减少会使人们更难获得可饮用或灌溉的淡水，并可能导致地面下沉。
The authors found that groundwater levels declined between year 2000 and 2022 in 71% of the 1,693 aquifer systems included in the research,
研究人员发现，在2000年至2022年间，研究中涵盖的1693个含水层系统有71%出现了地下水位下降，
with groundwater levels declining more than 0.1 meter a year in 36%, or 617, of them.
其中有36%（即617个地区）的地下水位每年下降超过0.1米。
The Ascoy-Soplamo Aquifer in Spain had the fastest rate of decline in the data they compiled -- a median decline of 2.95 meters per year,
在他们收集的数据中，西班牙的Ascoy-Soplamo含水层的下降速度最快--每年下降的中位数为2.95米，
said study coauthor Scott Jasechko, an associate professor at the Bren School of Environmental Science and Management at University of California Santa Barbara.
该研究报告的合著者、加州大学圣塔芭芭拉分校布伦环境科学与管理学院副教授斯科特·杰斯克可如是说。
Several aquifer systems in Iran were among those with the fastest rate of groundwater decline, he added.
他还指出，伊朗的几个含水层系统是地下水位下降速度最快的地区之一。
The team wasn't able to gather data from much of Africa, South America and southeast Asia because of a lack of monitoring,
由于监测不足，该团队无法收集到非洲、南美和东南亚的大部分地区的数据，
but Jasechko said the study included the countries where most global groundwater pumping takes place.
但杰斯克可表示，这项研究涵盖了全球大多数开采地下水的国家。
