1. School of Economics and Management, Guangxi Normal University, Guilin 541006, China
2. Pearl River-Xijiang River Economic Belt Development Institute, Guangxi Normal University, Guilin 541004, China
3. Guangxi Key Laboratory of Landscape Resources Conservation and Sustainable Utilization in Lijiang River Basin, Guangxi Normal University, Guilin 541004, China
4. School of Business, Guilin Tourism University, Guilin 541006, China