环保主义者称引流河水将导致地下水位下降和水井干枯。
Environmentalists say that diverting water from the river will lower the water table and dry out wells.
地下水位是地层岩石裂缝和孔隙充满水的边界。
The water table is the underground boundary below which all the cracks and pores are filled with water.
地下水位的上方是包气带，雨水从中渗透。
Above the water table is the vadose zone, through which rainwater percolates.
包气带中的水会沉降到地下水位，只在矿物颗粒表面留下一层薄薄的水膜。
Water in the vadose zone drains down to the water table, leaving behind a thin coating of water on mineral grains.
在半岛北部，海拔足够低，因此古玛雅人能够经由被称为竖井的深层排水口或深洞探及地下水位。
In the northern peninsula the elevation is sufficiently low that the ancient Maya were able to reach the water table at deep sinkholes called cenotes, or at deep caves.
地下水位是不平坦的，而是通常随地势而变化。
The water table is not flat but usually follows the contours of the topography.
如果没有排水系统，地下水位就会上升，把溶解的盐带到地表。
If no drainage system exists, the water table rises, bringing dissolved salts to the surface.
不过一般来讲，地下水位可能会位于地表以下数十或数百米。
Typically, though, the water table may be tens or hundreds of meters below the surface.
由于地下水位不是平面的，而是随着地形起伏的，所以地下水和地表水一样受到重力的影响。
Because the surface of the water table is not flat but instead rises and falls with topography, groundwater is affected by gravity in the same fashion as surface water.
如果地下水位与地表相交，地下水将在泉水处流出地表，聚集于此或是随后沿着排水系统进一步流动。
If the water table intersect the land surface, groundwater will flow out onto the surface at springs, whether to be collected there or to subsequently flow farther along a drainage.
在某些情况下，地下水位到达地球表面，在那里以河流、湖泊和沼泽的形式表现出来。
In some cases, the water table reaches Earth's surface, where it is expressed as rivers, lakes and marshes.
由于地下水位下降，灌溉井干涸，居于世界之首的中国小麦产量，已经从1997年1.23亿吨的峰值下降了8%。
As water tables have fallen and irrigation wells have gone dry, China's wheat crop, the world's largest, has declined by 8% since it peaked at 123 million tons in 1997.
设计还可减轻该地区对众多庞大水泵的依赖，因水泵不仅可以抽掉暴风雨水，却也降低了本地区的地下水位。
The plan could lessen the reliance on the mammoth pumps that not only remove storm water but also lower the natural water table of the area.
一个小孩在地下水位旁忙着制作起泡沫的浓肥皂水并用勺子搅拌着，在她旁边还有一个小孩。
A child was at the water table and she was busy sudsing up some soap and stirring with her spoon, and there was a child next to her.
地下水位的降低则是地表陷没的元凶，而新奥尔良，和威尼斯城一样，正在下陷。
This decrease in the water table is a major contributor to land subsidence - New Orleans, like Venice, is sinking.
尽管难以在盐碱地里栽种树木，但覆盖地表和湿地的植被异常丰富，随着地下水位和PH值的细微变化而呈现不同的形态。
Though it is di? Cult to grow trees in the saline-alkali soil, the ground cover and wetland vegetation are rich and vary in response to subtle changes in the water table and PH values.
也有证据显示，地下水位正在下降，逼迫农民们使用更低质量的水，这样的水含砷量较高。
There is also evidence that the water table is declining, forcing farmers to use poorer quality water containing high levels of arsenic.
而许多地区仍然遭遇盐碱、河流甘苦和地下水位低等问题。
And many areas still suffer from salinity problems, dried up rivers and low water tables.
地下水位一直在下降，温度却年年上升。
在中国、墨西哥和印度人口稠密的贫穷地区，地下水位在急速下降。
The water table is falling fast in densely populated and poor regions of China, Mexico and India.
每年萨那的地下水位以六米(二十英尺)的速度下降，世界银行估计至2010年，萨那将耗尽剩余的水源。
The World Bank expects Sana, where the water table is falling by six meters (20 feet) a year, to have exhausted its remaining water supply by 2010.
自从水资源保护项目在村里的开展和地下水位的提升，这口井在旱季也能为作物灌溉提供水源。
As the conservation program has progressed in the village and the water table has risen, this well has also been able to provide irrigation for crops during the dry season.
农田的抗水分胁迫能力下降，而且地下水位得不到渗透水的补充，加重了干旱的影响。
Fields become less resistant to water stress and the water table is no longer resupplied by water filtering through, worsening the effects of droughts.
地下水位可能仅在地面之下，这使得隧道变得十分不可行。
The water table was probably just below the surface making tunnels highly unlikely.
在地下水位较高的雨季，动物们可以轻易喝到地面渗流水塘的水。
In wet periods, when the water table was high, animals could easily drink from seepage ponds near the surface.
用水力压裂技术采气的过程会破坏地下水位，影响周边环境，甚至引起地震。
Fracking can damage the water table, disrupt communities and even cause earthquakes.
在我们今天的地球上，地下水位不断下降，土壤受到侵蚀，冰川正在融化，鱼群种类不断减少，还有近10亿人口每天都在挨饿。
'Right now on Earth, water tables are falling, soil is eroding, glaciers are melting, and fish stocks are vanishing. Close to a billion people go hungry each day.'
土地的所有者则会捐赠一些他们的劳力，因为这一工程带来的地下水位上升对他们的农田有益。
Landowners, whose fields will benefit from the resulting rise in the water table, donate some of their labor.
土地的所有者则会捐赠一些他们的劳力，因为这一工程带来的地下水位上升对他们的农田有益。
Landowners, whose fields will benefit from the resulting rise in the water table, donate some of their labor.
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