碳排放交易机制中涵盖部门制度的构建

碳排放交易机制是减缓温室气体排放的重要经济手段,其首要环节是确定涵盖部门范围,以及排放实体或设施的纳入门槛。环境效果与经济效率是涵盖部门制度设计的重要价值考量。在理论上,涵盖的部门范围越广泛,纳入的排放单位越多,其环境效果和经济规模效应越显著。但在实践中,一些产业部门根据经济可行性分析、技术因素的考虑以及减排激励的差异,会有其他更加合适的减排选项。

Construction of Covered Sector System in Emission Trading Scheme

The Emission Trading Scheme is an important economic measures to abate greenhouse emission, and its prime step is to determinate the covered sector as well as threshold of covered entity within specified sector. In theory, the more sectors and emission sources are covered by ETS, the better environmental effect and efficiency of economic operations can be achieved. In practice, however, all sectors cannot be properly embraced in ETS, and there will be other more appropriate reduction options for some sectors according to economic feasibility analysis, consideration of technological factor and mo tivator difference of emission reduction.