Developing a factorial hypothetical extraction model for assessing composite effects on cutting national carbon emission intensity

China has pledged to reach its carbon emission peak by 2030 and achieve the neutrality around 2060’s. Cutting the national carbon emission intensity (CI) is conducive to achieve these ambitions. To reduce China's CI, simultaneous implementation of efficient countermeasures may come at the expense of system health. Evaluation of composite effects of multiple mitigation countermeasures is critically desired. Factorial analysis can help analyze …