【摘要】 基于连续性双重差分等方法,评估2004～2017年我国碳交易试点政策的减排效应及地区差异,并分析其作用机制.结果显示,碳交易政策能使试点地区的碳排放强度下降9.5%,碳市场规模、活跃度每增加1%,将分别带来试点地区碳排放强度下降0.9%和0.7%.异质性影响上,碳交易政策对东中部地区的减排效应明显,对西部地区无明显作用;对发达省份产生的碳减排影响要显著高于欠发达省份.碳减排效应主要通过对参与市场的企业实施影响来实现.碳交易政策还发挥了一定的污染物协同减排效应,使试点地区的二氧化硫排放量下降22.7%.应加快推进全国碳市场建设,提升碳市场的活跃度,畅通减排渠道,继续发挥试点碳市场作用,推动二氧化碳与其他污染物协同减排.更多还原

【Abstract】 Based on a continuous difference-in-difference model, this study evaluated the emissions reduction effect and regional variation and the mechanism of China’s carbon trading pilot policies from 2004 to 2017. The results showed that the carbon trading policy could reduce the carbon intensity of the pilot areas by 9.5%, and every 1% increase in the size and activity of the carbon market brought about a 0.9% and 0.7% reduction in the carbon intensity of the pilot areas, respectively. In terms of heterogeneous impact, the carbon trading policy had a significant emission reduction effect on the east and central regions while it had no significant impact on the western areas. Further, the carbon trading policy had a significantly higher impact on carbon reduction in developed provinces than in developing provinces in China. The carbon emission reduction effect was mainly achieved by implementing influence on the enterprises participating in the market. In addition, the carbon trading policy had a synergistic pollution reduction effect, reduced sulfur dioxide emissions by 22.7% in the pilot areas. Therefore, it is necessary to accelerate the national carbon market and increase the level of carbon market activity. While it is also necessary to smooth emission reduction channels, and promote the synergistic emission reduction of carbon dioxide and other pollutants.更多还原