6Jansen-Verbeke.M.C.and Ashworth.G., Environmental integration of recreation and tourism [J]. Annals of Tourism Research 1990,17(4)618-622.
7W, Christaller, Considerations of tourism location in Europe:The peripheral regions-underdeveloped countries-recreation areas, Regional Science Association Papers,1963,12:I03.
8Porter.ME, The Adam Smith Address :Location ,Ouster ,and The“New”Microeconomics of Competition [M] . The National Association of Business Economists ,1998.
9Judd.D.R., Promoting Tourism in US cities[J]. Tourism Management 1993,16(3),175-187.