1. Department of Leisure & Tourism Management, Shu-Te University, Kaohsiung 824, Taiwan
2. College of Agriculture and Forestry Technology and Biotechnology, Hanzhong Vocational and Technical College, Hanzhong 723002, China
3. Sustainable Development and Green Tourism, Phillips Graduate University, Chatsworth, CA 913, USA
4. Fisheries College, Jimei University, Xiamen 361021, China