北极的冻原部分现在排放的温室气体比它们由于解冻永久冻土而吸收的温室气体要多。 Parts of the Arctic tundra are now emitting more greenhouse gases than they absorb due to thawing permafrost.

一项有关自然气候变化的新研究表明,由于永久冻土的解冻,北极的冻原部分目前排放的二氧化碳和甲烷比它们吸收的二氧化碳和甲烷要多。 A new study in Nature Climate Change reveals that parts of the Arctic tundra are now emitting more carbon dioxide and methane than they absorb, due to thawing permafrost. 这一转变覆盖了约三分之一的北极-生物区域,随着长期死亡的植物物质分解和释放温室气体,可能会加速全球变暖。 This shift, covering about a third of the Arctic-boreal region, could accelerate global warming as long-dead plant matter decomposes and releases greenhouse gases. 调查结果表明,北极-生物区不再吸收大量碳排放量,这突出表明需要在气候变化缓解努力中更好地核算这些排放量。 The findings suggest that the Arctic-boreal zone no longer absorbs a significant amount of carbon emissions, highlighting the need for better accounting of these emissions in climate change mitigation efforts.