《联合国气候变化框架公约》（UNFCCC或FCCC）缔约方第15次会议，即哥本哈根气候变化大会结束之后，世界各国的很多决策者和学者对把二十国集团当作推进气候变化外交的另一平台展开了讨论。因此，很有必要研究二十国集团在解决气候变化问题方面存在的风险和可能性。研究结果表明，尽管二十国集团从结构上看起来在解决气候变化问题方面具有很强的吸引力，但是目前二十国集团在推进气候变化谈判方面能力有限，不能替代联合国主导的气候变化谈判框架。%After the 15th conference of the UN Framework Convention on Climate Change （UNFCCC） contracting countries in Copenhagen, policymakers and scholars discussed on the G20 as an alternative platform for promoting climate change diplomacy. Therefore, it is necessary to study on the potential risks and possibilities of tackling climate change by the G20. The research showed that the G20 has limited capacities in pushing the climate change negotiations and thus can not be replaced by the climate change negotiation framework led by the United Nations, though it seems very attractive in terms of the structure of the G20.
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