The Cooperation-Competition Model of Regional Tourism Cities of Shandong Based Niche Theory
用生态位理论测量山东17市旅游资源的4个维度，分析15年间城市旅游生态位变化，发现东部形成竞合模式并带动西部发展，提出生态位分离与扩展策略以促进区域旅游可持续发展。
The measurement system of the niche of regional tourism cities consisted of 4 dimensions of tourism resources, market, socio-economy and environment.It analyzed the temporal and spatial variation of urban tourism niche and their different dimensions in 15 years using niche trend model selected in 1996, 2001, 2006 and 2011 data,to investigate the influencing factors of changes in urban tourism niche trend.Results showed that with the development of various types of tourism resources and socio-economy and emphasis on protection of environment,17 cities in Shandong integrated tourism niche gaps continued to shrink, and formed a new development pattern.The cooperation- competing model of travel formed gradually in the eastern part of Shandong as core, and promoted the rapid development of the western region. In order to improve the regional tourism system sustainable development,it indicates that cities should adopt the measurements such as the niche separation, niche expansion etc. to improve the competition relation.