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【六级时文听写】气候变暖的新祸根(1/3)

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发表于 2016-8-2 13:28:14 | 显示全部楼层 |阅读模式
      周末啦~~~ 休息的时候也别忘了听写哦!!
        Hints:
        methane
        Nature
        Dr. Frank Keppler
        flatulent animals,
        peat bogs,
The culprits of global warming are plants. Plants produce about 10 to 30% of the annual methane found in the atmosphere. The scientists measured the amount of methane released by plants in controlled experiments. They found it increases with rising temperatures and exposure to sunlight.
  Significant methane emissions from both intact plants and detached leaves were observed in the laboratory and in the field, according to a report in the journal Nature from Dr. Frank Keppler and his team.
      Methane, which is produced by city rubbish dumps, coal mining, flatulent animals, rice cultivation and peat bogs, is one of the most potent greenhouse gases in terms of its ability to trap heat. Concentrations of the gas in the atmosphere have almost tripled in the last 150 years. About 600 million tons worldwide are produced annually.气候变暖的罪魁祸首是植物。植物每年制造的甲烷量占大气层中甲烷总量的10%—30%。科学家在核对实验中针对植物释放出的甲烷量进行了测量,发现随着温度的提高和接受日照量的增强,植物释放出的甲烷量也在提高。
  弗兰克·科普勒博士和他的团队在《自然》学术期刊中说,经实验室和田野中观察发现,完好的植物和掉落的叶子都会释放大量的甲烷。
  甲烷产生于垃圾、煤矿、胃胀的动物、稻谷培育和泥炭沼中,就其吸热能力来讲,是一种强有力的产生温室效应的气体。在过去的150年里,大气中甲烷的聚集量增长了2倍,全世界每年要产出6亿吨甲烷。
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