According to the standard of Classification, Investigation and Evaluation of Tourism Resources, what are the main categories and subcategories of tourism resources?

According to the causes or attributes of tourism resources, academic circles divide tourism resources into two categories: natural tourism resources and humanistic tourism resources. The former refers to the natural landscape composed of landform, water body, climate, animals and plants, which attracts people to travel, and has obvious naturalness; The latter has a wide range of contents and types, including various historical sites, great ancient and modern buildings, ethnic customs and so on. It is the artistic crystallization and cultural achievement of human activities. Some also divide it into three categories, in addition to the above two categories, there are compound tourism resources. According to the traditional view of tourism resources, China's tourism resources include natural landscape resources, human landscape resources, folk customs resources, traditional food resources, cultural resources and handicrafts resources, as well as urban and rural scenery resources. According to the classification of modern tourism industry resources, China's tourism resources include sightseeing tourism resources, holiday tourism resources, eco-tourism resources, skiing, mountaineering, adventure, hunting and other special tourism resources, as well as food, study, medical care and other special tourism resources.