Who can tell me what are the three elements of tourist attractions in tourist geography?

What are the three elements of tourist attractions? I haven't heard of this content. 1. Three elements of tourism activities: tourists, tourism resources and tourism services. 2. Three conditions to become a tourist: travel motivation, certain leisure time and certain economic conditions. 3. Three types of tourism resources: natural landscape tourism resources, human landscape tourism resources and natural and human landscape tourism resources. 4. There are three factors that affect the distribution of tourism resources: physical geography, human geography and social cognition. 5. concentrated in the southeast; 6. Three aspects of aesthetic ability: sensibility, understanding and creativity. The value of tourism resources: economic value, social and cultural value and ecological environment value.