1. Research Institute for Ecological Civilization, Chinese Academy of Social Sciences, CASS Thinktank for Eco-civilization Studies, No. 27 Wangfujing Street, Dongcheng District, Beijing 100710, China
2. Institute of Quantitative & Technological Economics, Chinese Academy of Social Sciences, 5 Jianguomennei Street, Dongcheng District, Beijing 100732, China
3. College of Economics and Management, Southwest University, No. 2 Tiansheng Road, Beibei District, Chongqing 400715, China