掩护地球的土壤就可以抵消美国每年的碳排放量

时间:2021-09-11 12:40 作者:E星体育
本文摘要:图片泉源:图虫创意新研究显示,只要恢复和掩护世界的土壤,每年就能够吸收凌驾50亿吨的二氧化碳,相当于美国一年的排放量。去年团结国政府间气候变化专门委员会说,全世界需要越发努力地保持土地吸收并储存使全球变暖的温室气体的能力,防止它从碳汇酿成碳源。

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图片泉源:图虫创意新研究显示,只要恢复和掩护世界的土壤,每年就能够吸收凌驾50亿吨的二氧化碳,相当于美国一年的排放量。去年团结国政府间气候变化专门委员会说,全世界需要越发努力地保持土地吸收并储存使全球变暖的温室气体的能力,防止它从碳汇酿成碳源。

Last year the United Nations' Intergovernmental Panel on Climate Change said that the world needed to work harder to retain the land's ability to absorb and store planet-warming greenhouse gases and prevent it turning from a carbon sink to a source.全球仅1米的土壤的含碳量就和现在大气中的一样多,在树木腐烂回到土壤中时就能将二氧化碳锁住。Just the first metre of soil around the world contains as much carbon as is currently in the atmosphere, locking up the CO2 sequestered in trees as they decompose and return to the earth.在《Nature Sustainability》杂志中,一篇新论文分析了将二氧化碳锁在土壤中的可能性,发现如果妥善治理,土壤可以吸收四分之一的二氧化碳。A new paper in the journal Nature Sustainability analysed the potential for carbon sequestration in soils and found it could, if properly managed, contribute a quarter of absorbtion on land.陆地固碳总量为238亿吨二氧化碳,所以从理论上讲,土壤每年能吸收55亿吨。

The total potential for land-based sequestration is 23.8 gigatonnes of CO2-equivalent, so soil could in theory absorb 5.5 billion tonnes annually.吸收总量中约40%仅仅通过保持现有土壤稳定就可以实现,也就是说,全球不要继续扩大农业和种植面积。Most of this potential, around 40 percent, can be achieved simply by leaving existing soil alone - that is, not continuing to expand agriculture and plantation growth across the globe.此次研究的主要作者、大自然掩护协会的首席土壤科学家Deborah Bossio说:“大部门对生态系统举行的破坏都是为了扩大农业面积,所以减缓或停止这种扩张是一项重要战略。

”"Most of the ongoing destruction of these ecosystems is about expanding the footprint of agriculture, so slowing or halting that expansion is an important strategy," said Deborah Bossio, principal study author and lead soil scientist for The Nature Conservancy.。


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