What do natural tourism resources include?

(1) The earth’s circles constitute natural tourism resources.

(2) The regional combination rules of the natural geographical environment determine the formation of tourist areas and tourist spots.

(3) Natural tourism resources are controlled by the differentiation laws of the earth’s landscape zones.

(4) Geological processes are the background for the formation of natural tourism resources.

(5) Hydrological characteristics of earth’s water bodies. ①Ocean: beaches, islands, coral reefs, marine biological resources. ②River: There are many rapids and canyons in the upper reaches, rolling waves in the middle reaches, and dense water networks in the lower reaches, forming different resource characteristics. ③Waterfalls: changes in shape, color and sound form a unique tourism resource. ④Spring: in various shapes and forms. ⑤Lake: Various and colorful.

(6) Differences in climate. ① Due to regional differences in climate, tourism resources such as recreational climate, summer resorts, and cold resorts have been formed. ② Combined with other elements to form unique attractions, such as tropical rainforest landscapes, arid desert landscapes, and frigid ice and snow landscapes. ③Vertical changes can form a three-dimensional climate tourism resource where "one mountain has four seasons and ten miles have different weather". ④ Changes in climate elements: drizzle, mountain clouds, forest and snowfields, morning glow and evening dew, rising sun and setting sun, rime and rain.

(7) Diversity of life on earth. ① Biological fossil tourism resources. ②Relict animals and plants. ③Different plant communities form different landscapes. ④Green plants are an important factor in the scenic spot.