Two sides of the same coin: The economic and environmental effects of China's international trade from a global value chain perspective

China's accession to the World Trade Organization (WTO) has led to rapid economic growth and international trade development. However, China is also challenged with a heavy environmental burden due to the massive carbon emissions transferred through trade. By splitting production activities into traditional trade and global value chain (GVC) activities, this paper uses an intercountry input-output (ICIO) framework to study the imbalances of the economic and environmental effects between China's imports and exports at different levels. We define the indices value added per embodied emission in imports and exports (VPM and VPX, respectively). Additionally, we find a large gap between China's VPM and VPX, primarily because developed economies gain much higher value added per embodied emission than China gained through exports in GVC activities. Then, we study how to narrow the gap between China's VPM and VPX. The application of multiplicative structural decomposition analysis (SDA) and the logarithmic mean Divisia index I (LMDI-I) approach reveals the total and bilateral-sectoral contributions of the driving factor effects to the changes in China's VPM and VPX. The results provide tailored implications for promoting the comprehensive economic and environmental benefits of China's imports and exports.