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「中国日报网」研究：1/5亚马孙雨林排碳多于吸碳

亚马孙雨林产生的氧气占全球氧气总量的1/10 ， 因此被称为“地球之肺” 。 而最新的一项研究表明 ， “地球之肺”如今可能要保不住了 。 亚马孙雨林中大约20%的流域排出的二氧化碳已经多于吸收量 。
「中国日报网」研究：1/5亚马孙雨林排碳多于吸碳
文章图片
Amazon Jungle, Brazil/Nathalia Segato/unsplash
Up to one fifth of the Amazon rainforest is emitting more CO2 than it absorbs, new research suggests.
最新研究表明 ， 多达五分之一的亚马孙雨林排放的二氧化碳比吸收的还要多 。
Results from a decade-long study of greenhouse gases over the Amazon basin appear to show around 20% of the total area has become a net source of carbon dioxide in the atmosphere.
对亚马孙流域温室气体的一项长达十年的研究结果显示 ， 该流域中大约有20%的地区已成为大气中二氧化碳的净来源地 。
One of the main causes is deforestation.
造成这一现象的主要原因之一是森林砍伐 。
While trees are growing they absorb carbon dioxide from the atmosphere; dead trees release it again.
树木生长时 ， 会从大气中吸收二氧化碳 ， 死亡的树木会再次释放二氧化碳 。
Millions of trees have been lost to logging and fires in recent years.
近年来 ， 数百万棵树木被砍伐或被火灾烧毁 。
The results of the study, which have not yet been published, have implications for the effort to combat climate change.
这项尚未发表的研究结果对应对气候变化的努力具有启示意义 。
They suggest that the Amazon rainforest - a vital carbon store, or "sink", that slows the pace of global warming - may be turning into a carbon source faster than previously thought.
研究认为 ， 作为至关重要的碳储存地（或称“碳汇”） ， 亚马孙雨林减缓了全球变暖的步伐 ， 而它转变为碳排放源的速度可能比之前预想的要快 。
Every two weeks for the past 10 years, a team of scientists led by Prof Luciana Gatti, a researcher at Brazil's National Institute for Space Research (INPE), has been measuring greenhouse gases by flying aircraft fitted with sensors over different parts of the Amazon basin.
过去10年里 ， 每隔两周 ， 由巴西国家空间研究所研究员卢西亚纳?加蒂教授领导的一个科学家团队 ， 就会在亚马孙流域的不同区域 ， 通过安装传感器的飞行器来测量温室气体 。
What the group found was startling: while most of the rainforest still retains its ability to absorb large quantities of carbon dioxide - especially in wetter years - one portion of the forest, which is especially heavily deforested, appears to have lost that capacity.
该小组的发现令人震惊：虽然大部分雨林仍然保持着吸收大量二氧化碳的能力——尤其是在更湿润的年份 ， 但森林的一部分 ， 尤其是大量被砍伐的森林 ， 似乎已经失去了这种能力 。
Gatti's research suggests this south-eastern part of the forest, about 20% of the total area, has become a carbon source.
加蒂的研究表明 ， 亚马孙雨林的东南部（约占总面积的20%）已经成为一个碳源 。
"Each year is worse," she told Newsnight.
“一年比一年糟糕 ， ” 加蒂告诉夜间新闻栏目 。
"We observed that this area in the south-east is an important source of carbon. And it doesn't matter whether it is a wet year or a dry year. 2017-18 was a wet year, but it didn't make any difference."


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