摘要
All parties are committed to reaching an agreement on post-2020 global climate arrangement at the United Nations Climate Conference in Paris at the end of this year. Countries put forward their Intended Nationally Determined Contribu- tions （INDCs） one after another. The IPCC Fifth Assessment Report （AR5） released last year confirmed the scientific conclusion that anthropogenic greenhouse gas （GHG） emis- sions are the main causes of global warming, and proposed mitigation pathways to limit the temperature increase within 2 ℃. However, according to current trend of emissions, the global mean temperature will increase 3.7--4.8 ℃, which could bring disastrous risks to both the earth＇s ecology and human society. Therefore, all countries in the world should strengthen efforts to mitigate GHG emissions.
