[1
]School of Cultural Tourism and Geography, Guangdong University of Finance & Economics,
Guangzhou, PR China
[2
]School of Tourism Management, South China Normal University, Guangzhou, PR China
[3
]South China Ecological Civilization Research Center, South China Normal University,
Guangzhou, PR China
[4
]School of Tourism Management, Sun Yat-sen University, Guangzhou, PR China