“…Some scholars have studied one-way impact of these factors, such as the impact of FDI on CO 2 emissions (Baek, 2016;Gokmenoglu & Taspinar, 2016;Kivyiro & Arminen, 2014) and the impact of international trade on CO 2 emissions (McCarn & Adamowicz, 2006;Hossain, 2011;Ozturk & Acaravci, 2010;Wang & Ang, 2018). Other scholars consider that bidirectional causality exists in the relationship between CO 2 emissions and FDI (Omri, Nguyen, & Rault, 2014;Pao & Tsai, 2011;Peng, Tan, Li, & Hu, 2016) as well as that between CO 2 emissions and trade openness (Jamel & Maktouf, 2017). However, few studies analyze the causal relationship between CO 2 emissions and economic factors (e.g., GDP per capita, FDI, and international trade) with a focus on China.…”