关键词: 碳排放交易, 效率评价, 差异系数

Abstract: According to China’s carbon emission trading pilot phase “difference” system design features, we build the digital input-output efficiency evaluation index system of carbon trading market from six aspects such as distribution system, flexible mechanism, control range, trading rules, report and verification system, and legal system. To control the unbalanced external environment impact on efficiency, measuring the difference coefficient of different pilot areas, the purpose is to modify data output indexes. The measure of the pilot areas carbon trading market efficiency suggests that: First, after stripping out outside the system, carbon trading market efficiency of Shanghai, Tianjin and Beijing three provinces declined, while the remaining four provinces input-output efficiency increased. We illustrate the rationality of differentiation system design which can effectively correct the external environment of regional carbon trading market efficiency influence. We also discuss the design effectiveness of the carbon trading market differentiation system, control system factors of necessity and reasonableness. Second, the system design itself of seven pilot carbon trading market has not been effective. Guangdong has the optimal efficiency only charged with low percentage of industry control range design. The efficiency of Chongqing and Tianjin is low, followed by Shanghai, Shenzhen and Beijing. Due to the unreasonable scope design, high barriers to entry, a serious shortage of MRV workers, Hubei has the worst market efficiency.

Key words: carbon emission trading, efficiency evaluation, differentiation