1. Department of Tourism, Ningbo University, Ningbo, Zhejiang 315211, China
2. Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
3. China-New Zealand Tourism Research Unit, The University of Waikato, Hamilton 3240, New Zealand
4. School of Management and Marketing, Faculty of Business and Law, Curtin University, Perth 6102, Australia