研究：北京每年下沉多达11厘米
<p><span word="China">China</span>’<span word="s">s</span> <span word="capital">capital</span> <span word="is">is</span> <span word="known">known</span> <span word="for">for</span> <span word="its">its</span> <span word="horrendous">horrendous</span> <span word="smog">smog</span> <span word="and">and</span> <span word="occasional">occasional</span> <span word="sandstorms">sandstorms</span>. <span word="Yet">Yet</span> <span word="one">one</span> <span word="of">of</span> <span word="its">its</span> <span word="major">major</span> <span word="environmental">environmental</span> <span word="threats">threats</span> <span word="lies">lies</span> <span word="underground">underground</span>: <span word="Beijing">Beijing</span> <span word="is">is</span> <span word="sinking">sinking</span>.</p><p>北京可怕的雾霾和偶尔发生的沙尘暴为世人皆知，而一个重要的环境威胁却被大家忽略了：北京正在下沉。</p><p><span word="Excessive">Excessive</span> <span word="pumping">pumping</span> <span word="of">of</span> <span word="groundwater">groundwater</span> <span word="is">is</span> <span word="causing">causing</span> <span word="the">the</span> <span word="geology">geology</span> <span word="under">under</span> <span word="the">the</span> <span word="city">city</span> <span word="to">to</span> <span word="collapse">collapse</span>, <span word="according">according</span> <span word="to">to</span> <span word="a">a</span> <span word="new">new</span> <span word="study">study</span> <span word="using">using</span> <span word="satellite">satellite</span> <span word="imagery">imagery</span> <span word="that">that</span> <span word="reveals">reveals</span> <span word="parts">parts</span> <span word="of">of</span> <span word="Beijing">Beijing</span> – <span word="particularly">particularly</span> <span word="its">its</span> <span word="central">central</span> <span word="business">business</span> <span word="district">district</span> – <span word="are">are</span> <span word="subsiding">subsiding</span> <span word="each">each</span> <span word="year">year</span> <span word="by">by</span> <span word="as">as</span> <span word="much">much</span> <span word="as">as</span> 11 <span word="centimetres">centimetres</span>, <span word="or">or</span> <span word="more">more</span> <span word="than">than</span> <span word="four">four</span> <span word="inches">inches</span>.</p><p>一项根据卫星图像作出的最新研究结果显示，过度抽取地下水导致北京地下结构出现塌陷。北京部分地区，特别是中央商务区，每年下沉多达11厘米，也就是超过4英寸。</p><p><span word="The">The</span> <span word="authors">authors</span> <span word="of">of</span> <span word="the">the</span> <span word="study">study</span> <span word="warn">warn</span> <span word="that">that</span> <span word="continued">continued</span> <span word="subsidence">subsidence</span> <span word="poses">poses</span> <span word="a">a</span> <span word="safety">safety</span> <span word="threat">threat</span> <span word="to">to</span> <span word="the">the</span> <span word="city">city</span> <span word="of">of</span> <span word="more">more</span> <span word="than">than</span> 2<span word="o">o</span> <span word="million">million</span>, <span word="with">with</span> “<span word="a">a</span> <span word="strong">strong</span> <span word="impact">impact</span> <span word="on">on</span> <span word="train">train</span> <span word="operations">operations</span>” <span word="one">one</span> <span word="of">of</span> <span word="the">the</span> <span word="predictions">predictions</span>.</p><p>研究报告的作者提醒说，持续的下沉对这座人口超过两千万的城市构成安全威胁，其中一个预测就是“将对铁路运营造成很大影响”。</p>
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