College of Tourism and Geographical Sciences, Yunnan Normal University, Kunming 650500, China;
College of Social Development, Yunnan Normal University, Kunming 650500, China;
College of Tourism and Geographical Sciences, Yunnan Normal University, Kunming 650500, China;
Key Laboratory of Educational Information for Nationalities(Yunnan Normal University), Ministry of Education, Kunming 650500, China;
School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China;
Yunnan Chinese Language and Culture College, Yunnan Normal University, Kunming 650500, China;