中文摘要：

在全球性温室气体减排与区域性空气污染物“联防联控”的政策背景下，电力行业作为节能减排政策的重要目标行业首当其冲．协同控制已成为释放双重压力的有效选择。本文以电力行业CO2对SO2的协同减排为切入点，采用中国省际面板数据，运用实证手段量化CO2减排对SO2减排产生的协同效应，并考察协同减排活动产生扩张效应的主要路径。研究发现，电力行业CO2减排活动对SO2产生的协同减排在众多省份普遍存在;区域异质性使得并非所有地区都适合探索协同减排路径,逾六成地区可通过协同减排在更大程度上发掘电力行业SO2的减排潜力（如天津、江苏、浙江等）或者缓解SO2排放压力（如云南、青海、江西等），其余地区则需考虑更直接的SO2防治措施；交互效应分析发现,电力行业固定资产投资与能源效率的增进是主要的协同减排扩张路径,而研发经费投入则对协同减排具有弱化作用,三者同时考虑则可使协同减排的总效应较未考虑交互作用时扩张逾三倍。本文研究结论可以为中国电力行业碳减排、区域污染防治政策目标的优化以及区域间协同减排的实践提供理论依据,进而为促进中国重污染行业低碳转型提供政策参考。

英文摘要：

In the ＂joint prevention and control＂ policy between global greenhouse gas emission reduction and regional air pollution, the power industry has been an important targeting industry of energy-saving and emission abatement policies, so synergic emission control has become an effective choice to release the double pressure. This paper analyzing synergie emission abatement between CO2 and SO2 in power industry, empirically quantifies the synergy effect of CO2 emission abatement on SO2 emission abatement and researches the main paths by which its expansion mechanism happens based on the panel data of China＇s provinces and cities. According to the study, synergic SO2 abatement which arises from CO2 abatement activities has been existed in most provinces （cities）, but regional heterogeneity makes it not suitable for all regions to explore synergic emission abatement paths, in other words, more than 60% regions can further exploit the SO2 emission abatement potential （e.g. Tianjin, Jiangsu, Zhejiang, etc.） in power industry or release SO2 emission pressure （e.g. Yunnan, Qinghai, Jiangxi, etc.）, another places need to consider SO2 controlling measures which are more direct. Interactive effect analysis shows that increasing fixed-asset investment and energy efficiency are major paths to synergie emission abatement expansion in power industry, R＆D spending could weaken synergic emission abatement, and when those three factors are considered simultaneously, the total synergic effect could be three times larger than it is when interactive effect isn＇t accounted for. The results of this paper can provide policy implications for carbon emission abatement, optimization on regional air pollution controlling policies, and inter-regional synergic emission abatement practice in China＇s power industry, which can promote low-carbon transformation in China＇s heavy pollution industries.