有研究称，低矮灌木、草地以及其它生长在北极地区的植物正变得越来越高。这一结果来自一位分析过三十年植物测量资料的科学家。该数据是从阿拉斯加、加拿大、冰岛、斯堪的纳维亚和俄罗斯等地采集到的，它表明是气候变暖推动了这一变化。
You have to be pretty hardy1 to flourish in the Arctic, and those plants that do tend to live just a few centimetres above the ground. But the cold north in recent decades, has seen some of the fastest rates of warming on the planet and the flora2 have reacted accordingly.
能在北极茁壮生长的植物得相当耐寒，而这类植物距离地面的高度往往只有几厘米而已。但近数十年来，寒冷的北极地区的升温速度极快，已跻身于地球各地前列，而这里的植物群也相应地受到了影响。
It's not just that existing shrubs3 and grasses have increased their stature4, although that is the case, but rather that taller species are now moving into areas they never used to grow in large numbers. This shift has repercussions5, an international team reports in the journal Nature. Taller Arctic plants trap more snow around them, insulating the ground from cold air. And that'll speed up the thawing6 of permanently7 frozen soils, releasing their carbon into the atmosphere. It's a feedback that should further
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