六级阅读资料全球变暖致今年春季过早来临
<p> <span word="Spring">Spring</span> <span word="arrived">arrived</span> <span word="incredibly">incredibly</span> <span word="early">early</span> <span word="this">this</span> <span word="year">year</span>, <span word="according">according</span> <span word="to">to</span> <span word="a">a</span> <span word="botanist">botanist</span> <span word="who">who</span> <span word="monitors">monitors</span> <span word="the">the</span> <span word="blooming">blooming</span> <span word="patterns">patterns</span> <span word="of">of</span> <span word="flowers">flowers</span>。 古人云春江水暖鸭先知，但今年的春季似乎来得特别早，植物学家在观测研究了鲜花盛开的情况后得出了这一结论。 <span word="Cristol">Cristol</span> <span word="Fleming">Fleming</span> <span word="says">says</span> <span word="she">she</span> <span word="believes">believes</span> <span word="the">the</span> <span word="appearance">appearance</span> <span word="of">of</span> <span word="flowers">flowers</span> <span word="up">up</span> <span word="to">to</span> <span word="two">two</span> <span word="months">months</span> <span word="early">early</span> <span word="is">is</span> <span word="down">down</span> <span word="to">to</span> <span word="the">the</span> <span word="changes">changes</span> <span word="created">created</span> <span word="by">by</span> <span word="global">global</span> <span word="warming">warming</span>。 植物学家<span word="Cristol">Cristol</span> <span word="Fleming">Fleming</span>认为，由于温室效应全球变暖，导致了一些植物开花的时间提早了将近两个月之多。 <span word="Experts">Experts</span> <span word="have">have</span> <span word="started">started</span> <span word="calling">calling</span> <span word="the">the</span> <span word="shift">shift</span> <span word="in">in</span> <span word="the">the</span> <span word="times">times</span> <span word="that">that</span> <span word="plants">plants</span> <span word="bloom">bloom</span> <span word="season">season</span> <span word="creep">creep</span> <span word="and">and</span> <span word="using">using</span> <span word="decades">decades</span> <span word="of">of</span> <span word="research">research</span> <span word="have">have</span> <span word="charted">charted</span> <span word="how">how</span> <span word="much">much</span> <span word="earlier">earlier</span> <span word="it">it</span> <span word="is">is</span> <span word="happening">happening</span>。 专家学者们开始讲类似的植物提前现象称为季节前移，他们在分析了近几十年来的研究所得出的结果表明了这种情况的确正在发生。 <span word="The">The</span> <span word="leaves">leaves</span> <span word="of">of</span> <span word="the">the</span> <span word="English">English</span> <span word="oak">oak</span> <span word="are">are</span> <span word="appearing">appearing</span> <span word="sooner">sooner</span>, <span word="meaning">meaning</span> <span word="that">that</span> <span word="winter">winter</span> <span word="moths">moths</span> <span word="are">are</span> <span word="coming">coming</span> <span word="out">out</span> <span word="earlier">earlier</span> <span word="and">and</span>, <span word="because">because</span> <span word="the">the</span> <span word="birds">birds</span> <span word="that">that</span> <span word="eat">eat</span> <span word="them">them</span> <span word="are">are</span> <span word="still">still</span> <span word="flying">flying</span> <span word="north">north</span>, <span word="they">they</span> <span word="have">have</span> <span word="already">already</span> <span word="turned">turned</span> <span word="from">from</span> <span word="caterpillars">caterpillars</span> <span word="and">and</span> <span word="into">into</span> <span word="moths">moths</span>。 橡树枝叶发芽的时间越来越早，这意味了冬蛾出现的时间也更早，因为专吃冬蛾还在向北迁徙中，这使得该类物种顺利地由毛毛虫变成蛾。 <span word="Their">Their</span> <span word="research">research</span> <span word="is">is</span> <span word="matched">matched</span> <span word="by">by</span> <span word="that">that</span> <span word="of">of</span> <span word="researchers">researchers</span> <span word="in">in</span> <span word="Korea">Korea</span> <span word="tracking">tracking</span> <span word="cherry">cherry</span> <span word="blossom">blossom</span> <span word="and">and</span> <span word="the">the</span> <span word="U">U</span>.<span word="S">S</span>., <span word="which">which</span> <span word="records">records</span> <span word="its">its</span> <span word="findings">findings</span> <span word="at">at</span> <span word="the">the</span> <span word="Smithsonian">Smithsonian</span> <span word="Institutions">Institutions</span> <span word="National">National</span> <span word="Herbarium">Herbarium</span> <span word="every">every</span> <span word="year">year</span>。 科学家们的研究结果与韩国对樱花的监测不谋而合，另外，美国国家植物协会的发现也充分证明了这点。 <span word="A">A</span> 2005 <span word="analysis">analysis</span> <span word="of">of</span> 100 <span word="of">of</span> <span word="the">the</span> <span word="most">most</span> <span word="popular">popular</span> <span word="flowers">flowers</span>, 90 <span word="bloomed">bloomed</span> <span word="up">up</span> <span word="to">to</span> 44 <span word="days">days</span> <span word="sooner">sooner</span> <span word="than">than</span> <span word="they">they</span> <span word="did">did</span> 20 <span word="years">years</span> <span word="ago">ago</span>, <span word="according">according</span> <span word="to">to</span> <span word="the">the</span> <span word="Washington">Washington</span> <span word="Post">Post</span>。 一项2005年的研究发现，在100种常见花卉中，有90种的开花时间要比20年前提前了近44天。 <span word="There">There</span> <span word="is">is</span> <span word="always">always</span> <span word="variation">variation</span> <span word="from">from</span> <span word="year">year</span>-<span word="to">to</span>-<span word="year">year</span> <span word="in">in</span> <span word="nature">nature</span>。 年复一年，大自然总会发生变化。 <span word="And">And</span> <span word="I">I</span> <span word="dont">dont</span> <span word="want">want</span> <span word="to">to</span> <span word="sound">sound</span> <span word="alarmist">alarmist</span> <span word="that">that</span> <span word="spring">spring</span> <span word="is">is</span> <span word="coming">coming</span> <span word="earlier">earlier</span> <span word="and">and</span> <span word="earlier">earlier</span>, <span word="said">said</span> <span word="Fleming">Fleming</span>, <span word="who">who</span> <span word="is">is</span> <span word="in">in</span> <span word="her">her</span> 70<span word="s">s</span>. <span word="But">But</span>, <span word="boy">boy</span>, <span word="every">every</span> <span word="year">year</span>, <span word="we">we</span> <span word="do">do</span> <span word="feel">feel</span> <span word="it">it</span>. 我并不是想要危言耸听，但是春季的确来得越来越早了，七十多岁的<span word="Fleming">Fleming</span>说，并且每年我们都能感觉得到。 <span word="Meanwhile">Meanwhile</span> <span word="Remote">Remote</span> <span word="Sensing">Sensing</span> <span word="Systems">Systems</span> <span word="has">has</span> <span word="shown">shown</span> <span word="that">that</span> <span word="March">March</span> 2011 <span word="was">was</span> <span word="the">the</span> <span word="coolest">coolest</span> <span word="March">March</span> <span word="since">since</span> 1994. 与此同时，遥感系统的显示，2011年的三月是自1994年以来，气温最低的三月份。 <span word="It">It</span> <span word="was">was</span> 0.026<span word="C">C</span> <span word="cooler">cooler</span> <span word="than">than</span> <span word="average">average</span> - <span word="the">the</span> <span word="first">first</span> <span word="month">month</span> <span word="that">that</span> <span word="has">has</span> <span word="been">been</span> <span word="cooler">cooler</span> <span word="than">than</span> <span word="average">average</span> <span word="since">since</span> <span word="June">June</span> 2008. 今年三月的气温较常年的平均值低0.026摄氏度，这也是自2008年6月以来，首次出现气温低于平均气温的情况。 <span word="Ms">Ms</span> <span word="Fleming">Fleming</span> <span word="worries">worries</span> <span word="that">that</span> <span word="plants">plants</span> <span word="life">life</span> <span word="cycles">cycles</span> <span word="are">are</span> <span word="speeding">speeding</span> <span word="up">up</span>。 <span word="Fleming">Fleming</span>担心植物的生命周期正在加快之中。 <span word="Her">Her</span> <span word="concern">concern</span> <span word="is">is</span> <span word="that">that</span> <span word="their">their</span> <span word="insect">insect</span> <span word="pollinators">pollinators</span> <span word="wont">wont</span> <span word="be">be</span> <span word="able">able</span> <span word="to">to</span> <span word="cope">cope</span> <span word="with">with</span> <span word="the">the</span> <span word="Earths">Earths</span> <span word="changing">changing</span> <span word="habitats">habitats</span>。 她所担忧的是昆虫传播花粉的速率将无法与其栖息地变化的情况相适应。 <span word="Unlike">Unlike</span> <span word="animals">animals</span>, <span word="plants">plants</span> <span word="cant">cant</span> <span word="just">just</span> <span word="get">get</span> <span word="up">up</span> <span word="and">and</span> <span word="move">move</span>。 与动物不同，植物无法移动。 <span word="If">If</span> <span word="they">they</span> <span word="end">end</span> <span word="up">up</span> <span word="in">in</span> <span word="a">a</span> <span word="climate">climate</span> <span word="thats">thats</span> <span word="too">too</span> <span word="warm">warm</span>, <span word="well">well</span>, <span word="theyll">theyll</span> <span word="just">just</span> <span word="die">die</span>. 如果它们生长的环境变得越来越热，它们最终只能死亡。 </p>
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