我们释放的碳都去哪儿了?
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0:02 - 0:04[克里斯汀] 我们释放的碳都去哪了?
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0:04 - 0:06碳在自然循环中起作用,
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0:06 - 0:10存在于所有生物中:土壤、海洋、
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0:10 - 0:13大气和地下深处的岩石中。
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0:13 - 0:16当植物和其他生物死亡时,
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0:16 - 0:17它们储存的大部分碳
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0:17 - 0:19会回到大气中,
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0:19 - 0:22直到新的植物生长并重新吸收这些碳。
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0:23 - 0:26但是经过数百万年,
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0:26 - 0:29一些储存在古树和海洋生物中的碳
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0:29 - 0:34变成了岩石,一些变成了化石燃料:煤、石油和天然气。
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0:34 - 0:37像火山爆发这样的自然事件
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0:37 - 0:39会释放一些被困在岩石中的碳。
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0:39 - 0:42人类活动,如燃烧化石燃料,
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0:42 - 0:46也会释放一些史前碳。
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0:46 - 0:50今天,人类每年释放的碳
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0:50 - 0:52是地球上所有火山的60倍。
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0:52 - 0:55这使地球的碳循环超载,
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0:55 - 0:57并在大气和海洋中积累。
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0:57 - 0:59种植更多的树会有所帮助,
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0:59 - 1:03但是光靠树木并不能让我们达到零净。
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1:03 - 1:05阻止全球变暖只有一个确定的方法。
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1:06 - 1:09我们必须停止向空气中释放多余的碳。
- Title:
- 我们释放的碳都去哪儿了?
- Speaker:
- Kristen Bell + Giant Ant
- Description:
-
- Video Language:
- English
- Team:
closed TED
- Project:
- TEDTalks
- Duration:
- 01:19
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Yolanda Zhang edited Chinese, Simplified subtitles for Where does all the carbon we release go? | |
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Yolanda Zhang edited Chinese, Simplified subtitles for Where does all the carbon we release go? | |
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TED Translators admin edited Chinese, Simplified subtitles for Where does all the carbon we release go? |