关键词: 双循环, 出口绿色贸易增加值, 投入产出模型

Abstract: The method of measuring a country's (or a region's) trade level in terms of the total value of exports and imports results in different degrees of double counting and this method does not take into account the implicit environmental costs of trade. By constructing the index of the value added green trade in exports and adopting the latest world input-output data from 66 countries (or regions) from 2000 to 2018 published by OECD, this paper measures and analyzes the value added green trade in China's exports from a dual circulation perspective. The findings show that the value added green trade in China's exports rose from US$114.861 billion in 2000 to US \$ 2502. 49 billion in 2018. The rapid rise in the value added green trade in exports is not only due to the expansion of export trade scale, but also related to the reduction of trade environmental costs. The export structures of the low-carbon knowledge-intensive manufacturing industry and the high-carbon capital-intensive manufacturing industry are not conducive to the reduction of trade environmental costs. The stage characteristics of China's domestic and international circulation intensity present an evolution trend from“international big circulation”to“domestic and international dual circulation”. Both the domestic and international circulation intensities have a positive impact on the value added green trade of China's export, with the international circulation intensity having a greater impact. Therefore, it is necessary to take the domestic circulation as the main body and promote the international circulation with the domestic circulation, to improve the added value of export products and reduce the environmental costs of export products, so as to improve the level of China's export green trade.

Key words: dual circulation, value added green trade in export, input-output model