研究：1/5亚马孙雨林排碳多于吸碳
<p>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。</p><p><span word="Up">Up</span> <span word="to">to</span> <span word="one">one</span> <span word="fifth">fifth</span> <span word="of">of</span> <span word="the">the</span> <span word="Amazon">Amazon</span> <span word="rainforest">rainforest</span> <span word="is">is</span> <span word="emitting">emitting</span> <span word="more">more</span> <span word="CO">CO</span>2 <span word="than">than</span> <span word="it">it</span> <span word="absorbs">absorbs</span>, <span word="new">new</span> <span word="research">research</span> <span word="suggests">suggests</span>.</p><p>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。</p><p><span word="Results">Results</span> <span word="from">from</span> <span word="a">a</span> <span word="decade">decade</span>-<span word="long">long</span> <span word="study">study</span> <span word="of">of</span> <span word="greenhouse">greenhouse</span> <span word="gases">gases</span> <span word="over">over</span> <span word="the">the</span> <span word="Amazon">Amazon</span> <span word="basin">basin</span> <span word="appear">appear</span> <span word="to">to</span> <span word="show">show</span> <span word="around">around</span> 20% <span word="of">of</span> <span word="the">the</span> <span word="total">total</span> <span word="area">area</span> <span word="has">has</span> <span word="become">become</span> <span word="a">a</span> <span word="net">net</span> <span word="source">source</span> <span word="of">of</span> <span word="carbon">carbon</span> <span word="dioxide">dioxide</span> <span word="in">in</span> <span word="the">the</span> <span word="atmosphere">atmosphere</span>.</p><p>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。</p>
页:
[1]