The biggest concern of pumping out water from this deep is the gradual settling down of the land surface.
从这么深的地方抽水，最大的问题是地表会逐渐下沉。
In particularly wet years, short stretches of an otherwise dry stream-bed may have flowing water because the water table rises to intersect the land surface.
在气候特别湿润的年月里，平常干涸的河床下游可能会有水流动，因为地下水在那里位抬升到了地表以上。
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.
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。
It has been estimated that an additional one-fourth of the Earth's land surface is threatened by this process.
据估计，地球表面另外四分之一的土地正面临沙漠化威胁。
The deserts, which already occupy approximately a fourth of the Earth's land surface, have in recent decades been increasing at an alarming pace.
沙漠已经占据了大约四分之一的地球表面积，近几十年来还在一直以惊人的速度增加。
Globally, forests now cover about 31% of the Earth's land surface.
就全球而言，目前森林覆盖约占地球陆地面积的31%。
The livestock sector now uses 30 percent of the Earth's land surface.
畜牧业共使用了目前地球陆地表面的30%，大部分被用于永久性牧场；
In both images, white clouds cast their shadows onto the land surface below.
在那两张照片里，白色的云把他们的影子投在下面的地表上。
Last month's global average land surface temperature was the fourth warmest on record.
上个月的全球平均地表气温，在有史以来的热榜上位居第四。
The assessment will cover the whole land surface of the Earth with about 9000 samples.
该评估将覆盖地球的整个地表并提供9000份样本。
Land surface temperature changes were also found to occur in the area where more rain fell.
地表温度的变化也被发现出现在该地区有较多的雨量。
Images were taken every eight days to reveal land surface that might otherwise be obscured by cloud.
每隔八天拍一张照，以展示可能被云层遮盖的地表。
Pharand claims three per cent of the planet's land surface is under tarmac - an area the size of India.
他称，3%的地球地表是柏油路面，面积差不多是一个印度那么大。
They may only cover 5 per cent of the world's land surface, but they emit three quarters of its greenhouse gases.
也许城市仅仅覆盖了世界地面的5%，但是，它们排放出四分之三的温室气气体。
A previously published image of land surface temperatures shows extreme heat in the drought region at the same time.
一份之前发布的地表温度图，也显示了同期该干旱地区受到的极端高温。
Inside the saltpan, the land surface is uneven. Areas shaped like sloppy teardrops rise above the surrounding plain.
盐田内部的地表凹凸不平，巨大的泪滴状隆起为周围的平原所环绕。
About 12 percent of Earth's land surface is now used for crops. Some of the consequences are difficult to predict.
地球表面陆地大约12%已经被开发种植农作物，其后果还是很难预测的。
That is the lowest point on the earth's land surface so this dramatic drop in just a very short geographical area.
这是地球陆地表面的最低点,这急剧下降是在很短的地理范围内。
Water on the land surface appears in shades of dull green, and a temporary river runs north-south through the image.
陆地表面的水流呈现暗绿的阴影，一条临时出现的河流自北向南纵贯图片。
City is a macroscopic geographical phenomenon on the land surface and an epitome of human economic and social activities.
城市是位于地表的宏观地理现象，同时也是复杂人类社会的缩影。
Although volcanic soils cover just one percent of the Earth's land surface, they support roughly 10 percent of its population.
虽然火山土只覆盖了地球陆地表面的1%，但是它们供养了近10%的人口。
To achieve the TanDEM level of detail on all 150 million sq km of the Earth's land surface will require three years of operation.
为了得到地球1.5亿平方公里的陆地面积的所有这种水平的细节，TAnDEM将需要运作3年。
Although the different models predict different details, they agree that the fire risk will change for about a quarter of the land surface.
虽然不同的模型预测不同的方面细节，他们都表明约四分之一的地表火灾风险会变化。
When a hurricane moves off the ocean and travels inland, friction between the rough land surface and the winds finally slows the storm down.
飓风离开海洋，刮向内陆时，风与崎岖不平的地面发生磨擦，终至使风暴速度减缓下来。
Among its many advantages we include: easy contact with the land surface, more personal space, complete personal security, and no housework worries.
在它所有的优点中包括：轻松于地面联系，更多的自由空间，完全的个人安全和不用担心做家务。
Some critics argue that the global record of land surface temperature over the 20th century could be to some extent corrupted by heat from towns and other factors.
有批评人士指出，在20世纪，全球地表温度的记录在一定程度上可能被城镇带来的热量以及其他因素侵蚀过。
Some critics argue that the global record of land surface temperature over the 20th century could be to some extent corrupted by heat from towns and other factors.
有批评人士指出，在20世纪，全球地表温度的记录在一定程度上可能被城镇带来的热量以及其他因素侵蚀过。
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