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本文探讨双寡头竞争环境下引入中性边境调整政策(Border Tax Adjustments,BTAs)对进口竞争企业的排放征收国内排放税产生的福利影响。引入BTA,在战略替代的情况下,产生较强的竞争力影响和正的碳泄漏,消费者面临净损失,因此,最佳的国内排放税通常会低于边际损害。在战略互补的情况下,最佳国内排放税不确定,这取决于正的竞争力效应与消费者净损失效应的相对强度。一旦加入边境税收调整政策,最佳国内排放税通常会相当于碳泄漏所占的比重,在战略替代的情况下,负的竞争力效应不能得到解决,在战略互补的情况下,产生负的碳泄漏,正的竞争力效应和净损失相互抵消。
This article examines the welfare effects of the introduction of Border Tax Adjustments (BTAs) into the competition of duopoly in the duopoly environment on the domestic emissions tax levied on the imports of competing firms. The introduction of BTA, in the context of a strategic replacement, has a strong competitive impact and positive carbon leakage, with net losses to consumers, so that the best domestic emissions tax will usually be lower than the marginal damage. In the case of strategic complementarity, the optimal domestic emission tax is uncertain, depending on the relative strength of the positive competitive effect and consumer net loss effects. Once the border tax adjustment policy is added, the optimal domestic emission tax will usually equal the share of carbon leakage, and in the case of strategic substitution, the negative competitive effect can not be solved and negative carbon will be produced in the case of strategic complementarity Leakage, positive competitive effects and net loss offset each other.