Opinions on when this tipping point could occur differs among scientists.
关于这个临界点何时会出现,科学家们的看法各不相同。
"Some people think that it won't be until three-degrees warming - so towards the end of the century, whereas other people think that we could get [it with] deforestation up above 20% or so and that might happen in the next decade or two. So it's really, really uncertain," explained Simon Lewis, professor of global change science at UCL.
伦敦大学学院全球变化科学教授西蒙·路易斯解释道:“有些人认为,到本世纪末气温上升3摄氏度才会出现临界点。而另一些人则认为,如果森林砍伐率上升大约20%就会达到临界点,这种情况可能会在未来10年或20年内出现。所以是非常不确定的。”
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